Annex 1: List of limit values for pollutants in the working atmosphere

Offshore petroleum activities are subject to the limit values with safety factors as mentioned in Section 36 of the Activities Regulations. Activities at onshore facilities (see Section 6(e) of the Framework Regulations) shall be planned with safety factors reflecting limit values.
The list includes comments as follows:
A:Chemicals to be treated as provoking allergic reactions or other hypersensitivity in the eyes or respiratory organs, or to be treated as provoking allergic reactions in contact with skin.
E:The EU has adopted a recommended limit value for the substance.
G:The EU has adopted a binding limit value for the substance.
H:Chemicals that can be absorbed through the skin.
K:Chemicals to be treated as carcinogenic.
M:Chemicals to be treated as mutagenic.
R:Chemicals to be treated as harmful to reproduction.
S:The short-term exposure limit: the average concentration of a chemical substance in an employee's breathing zone that must not be exceeded over a given reference period. The reference period is 15 minutes unless otherwise specified.
T:The ceiling value: a momentary value indicating the maximum concentration of a chemical substance in the breathing zone, which must not be exceeded.
CAS numberNameppmmg/m3CommentsLast amended
75-07-0Acetaldehyde2545K
60-35-5Acetamide1025K
67-64-1Acetone125295
75-05-8Acetonitril3050HE2007
Acetylene tetrabromide, see 1,1,2,2-Tetrabromoethane
Acetylene tetrachloride, see 1,1,2,2-Tetrachloroethane
50-78-2Acetylsalsylic acid-5
AES wool0.5 fibre/cm32007
Acrolein, see Acrylaldehyde
107-02-8Acrylaldehyde0.020.05HE2018
0.050.12S
79-06-1Acrylamide-0.03HKM
107-13-1Acrylonitrile24H K
79-10-7Acrylic acid1029AE2018
2059S
309-00-2Aldrin-0.25H
Allyl alcohol, see 2-Propen-1-ol
107-11-9Allylamine25
Allyl (2,3- epoxypropyl) ether, see
1-Allyloxy-2,3-epoxypropane
Allyl glycidyl ether, see
1-Allyloxy-2,3-epoxypropane
Allyl chloride; see 3-Chloropropene
106-92-31-Allyloxsy-2,3-epoxypropane522TA
2179-59-1Allyl propyl disulphide212
7429-90-5Aluminium powder (pyrotechnics)-5
Aluminium-soluble salts (calculated as Al)-2
Aluminium alkyls-2
1344-28-1Aluminium oxide-101
Aluminium welding fumes-5
141-43-52-Aminoethanol12.5HE2007
2-Aminopropane, see 2-Propylamine
504-29-02-Aminopyridine0.52
Ammate, see Ammonium sulphamate
61-82-5Amitrole0.2E2018
7664-41-7Ammonia1511E22012
5036S
12125-02-9Ammonium chloride-101
7773-06-0Ammonium sulphamate-101
Amorphous silicon dioxide Respirable dust-1.5
625-16-1tert-Amyl acetate50260E
iso-Amyl alcohol, see 3-Methyl-1-butanol
62-53-3Aniline14HK
o-Anisidine and p-Anisidine, see 2-Methoxyaniline and 4-Methoxyaniline
Anon, see Cyclohexagon
Antimony and Antimony compounds (calculated as Sb)-0.5K
7803-52-3Antimony hydride0.050.25K
ANTU, see 1-Naphthylthiourea
Arsenic and inorganic Arsenic compounds (except Arsenic hydride) (calculated as As)-0.01K
7784-42-1Arsenic hydride0.0030.01K
Arsinic, see Arsenic hydride
Asbestos, all forms0.1 fibre/cm3GK
8052-42-4Asphalt (fumes)-5
1912-24-9Atrazine-5K
111-40-03-Azapentane-1,5-diamine14HA
3-Azapentane-1,5-diol, see 2,2’-Iminodiethanol
86-50-0Azinphos-methyl-0.2H
Aziridin, see Ethylenimine
Barium and Barium compounds (except Barium sulphate) (calculated as Ba)-0.5E
17804-35-2Benomyl0.8101
71-43-2Benzene13GHK
1,2-Benzenediamine, see o-Phenylenediamine
108-46-31,3-Benzenediol10452007
108-98-5Benzenethiol0.52
1,2,4-Benzenetricarboxylic acid 1,2-anhydride, see Benzene-1,2,4-tricarboxylic acid 1,2-anhydride
552-30-7Benzene-1,2,4-tricarboxylic acid 1,2-anhydride0.0050.04A
106-51-41,4-Benzoquinone0.10.4
94-36-0Benzoyl peroxide-5A
85-68-7Benzyl butyl phthalate (BBP)-1RE2007
Benzyl chloride, see α-Chlorotoluene
Beryllium and Beryllium compounds (calculated as Be)-0.001K
92-52-4Biphenyl0.21
Bis (2,3-epoxypropyl) ether, 2,2’-[oxybis(mehtylene)] bisoxirane
80-05-7Bisphenol A, inhalable-2ARE2018
Bis (2-chloroethyl), see 2,2’-Dichlordiethyl ether
Bis-chloroethyl ether, see 1,1’-Dichloromethyl ether
Lead and inorganic Lead compounds (calculated as Pb) (dust and fumes)-0.05GR
301-04-2Lead acetate (calculated as Pb)-0.05KR
7446-27-7Lead phosphate (calculated as Pb)-0.05KR
7758-97-6Lead chromate (calculated as Cr(VI))-0.005KR2010
1335-32-6Lead subacetate (calculated as Pb)-0.05KR
Lead tetraethyl, see Tetraethyl lead
Lead tetramethyl, see Tetramethyl lead
Hydrocyanic acid, see Hydrogen cyanide
Cotton dust, total dust-0.23
Borax, see Sodium tetraborate decahydrate
1303-86-2Boric oxide-101
10294-33-4Boron tribromide110T
7637-07-2Boron trifluoride13T
7726-95-6Bromine0.10.7E
74-96-4Bromoethane522H
Bromoform, see Tribromomethane
Bromoethylene, see Vinyl bromide
74-97-5Bromochloromethane100525
2-Bromo-2-chloro-1,1,1trifluorethane, see Halothane
74-83-9Bromomethane520HK
7789-30-2Bromine pentafluoride0.10.7
75-63-8Bromotrifluoromethane5003050
106-99-01,3-Butadiene12.2K
110-65-62-Butyne-1,4-diol0.5AE2018
106-97-8Butane250600
71-36-3Butan-1-ol2575HT2007
78-92-2Butan-2-ol2575HT2007
431-03-82,3-Butanedione0.020.07AE2018
0.10.36S
Butanol (all isomers)2575HT2007
78-93-3Butanone75220E
1338-23-42-Butanone peroxide-1T
109-79-5Butanethiol0.51.5
2-butenal, see (E)-2-butenal
123-73-9(E)-2-butenal26H
111-76-22-butoxy-ethanol1050HE
2426-08-61-butoxy-2,3-epoxypropane527A
112-34-52-2(butoxyethoxy) ethanol10682007
112-07-22-butoxyethyl acetate1065HE
Butyl acetate (all isomers)75355
141-32-2Butyl acrylate211AE2007
Butylamine (all isomers)515HT
Butyl ethyl ketone, see 3-heptanone
Butyl (2,3-epoxypropyl) ether, see 1-butoxsy-2,3-epoxypropane
Butyl glycidyl ether, see 1-butoxsy-2,3-epoxypropane
Butyl glycol, see 2-butoxyethanol
1189-85-1tert-butyl chromate (calculated as CrO3 )-0.1HT
138-22-7Butyl lactate525
Butyl mercaptan, see Butanethiol
97-88-1Butyl methacrylate1059A2007
1634-04-4tert-butyl methyl ether (MTBE)50183.5E2011
100367S
p-tert-butyltoluen, see 1-methyl-4-tert-butylbenzene
2425-06-1Captafol-0.1
133-06-2Captan-5K
1333-86-4Carbon Black (lamp soot)-3.5
Cellosolve, see 2-etoxyethanol
Cellosolve acetate, see 2-etoxy ethylacetate
21351-79-1Cesium hydroxide-2
420-04-2Cyanamide0.61HE2007
Cyanides (calculated as CN)-5H
506-77-4Cyanogen chloride0.250.6T
13121-70-5Cyhexatin-5
Cyklo-, see cyclo
50-29-3DDT-1K
17702-41-9Decaborane0.050.3H
Decanes and other higher aliphatic hydrocarbons40275
8065-48-3Demeton0.010.1H
867-27-6Demeton-O-methyl0.050.5H
57041-67-5Desflurane5352010
Diacetone alcohol, see 4-Hydroxy-4- methyl-2- pentanone
1,2-Diaminobenzen, see o-Phenylenediamine
1,3-Diaminobenzen se m-Phenylenediamine
1,4-Diaminobenzen se p-Phenylenediamine
Diatomaceous earth (natural kieselguhr) Respirable dust-1.5
333-41-5Diazinon-0.1H
334-88-3Diazomethane0.20.4K
Dibenzoyl peroxide, see Benzoyl peroxide
19287-45-7Diborane0.10.1
Dibrome, see Dimethyl1,2-dibromo-2,2-dichlorethyl phosphate
75-61-6Dibromodifluoro-methane50430
106-93-41,2-Dibromoethane0.11K
102-81-82-(dibutylamino)ethanol214H
Dibutyl phosphate (all isomers)15
84-74-2Dibutyl phthalate-3
460-19-5Dicyan1022
60-57-1Dieldrin-0.25
Diethanolamine, see 2,2’-Iminodiethanol315
109-89-7Diethylamine515E2007
100-37-82-(dibutylamino)ethanol1050H
111-96-6Diethylene glycol dimethylether--HR
Diethylenetriamine, see 3-azapentane-1,5-diamine2000
60-29-7Diethyl ether100300E2007
84-66-2Diethyl phthalate-3
117-81-7Di-2-ethylhexyl phthalate (DEHP)-1R2007
Diethyl ketone, see Pentane-3-one
Diphenyl, see biphenyl
122-39-4Diphenylamine-5
101-84-8Diphenyl ether17E2018
214S
101-68-8Diphenylmethane-4,4’-diisocyanate (MDI)0.0050.05A4
Difluorodibromomethane, see Dibromodifluoro-methane
75-71-8Difluorodichloromethane5002475
75-45-6Difluorochloromethane5001750E
76-12-01,2-difluoro-1,1,2,2tetrachloro-ethane2502085
1314-56-3Diphosphorous(V) oxide-1E
Diglycidyl ether, see 2,2’-[oxybis(mehtylene)] bisoxirane
120-80-91,2 dihydroxybenzene520
1,3-Dihydroxybenzene, see 1,3-benzendiol
Diisobutyl ketone, see 2,6-dimethyl-4- heptanone
Diisocyanates0.005A4
108-18-9Diisopropylamine520H
108-20-3Diisopropyl ether125525
7572-29-4Dichloroacetylene0.10.4T
95-50-11,2-Dichlorobenzene20122HE2012
50306S
106-46-71,4-Dichlorobenzene212HKE2018
1060S
111-44-42,2’-Dichloroethyl ether530HK
542-88-11,1’-Dichlorodimethyl ether0.0010.005K
118-52-51,3-Dichloro-5,5-dimethylhydantoin-0.2
75-34-31,1-Dichloroethane50200HK
107-06-21,2-Dichloroethane14HK
75-35-41,1-Dichloroethene14HKE2018
312S
540-59-01,2-Dichloroethene100395
1,2-Dichloroethylene, see 1,2-Dichloroethene
94-75-72,4-Dichlorophenyloxyacetic acid-5
136-78-72-(2,4-Dichlorophenoxy) ethyl sulphate-5
75-09-2Dichloromethane1550HKE2018
45150S
Dichloromonofluoromethane, see Fluorodichloromethane
594-72-91,1-Dichloro-1-nitroethane212HT
78-87-51,2-Dichloropropane40185
75-99-02,2-Dichloropropane acid16
542-75-61,3-Dichloropropene15H
2,2-Dichloropropionic acid, see 2,2-Dichloropropane acid
1,2-Dichloro-1,1,2,2tetrafluoroethane, see 1,1,2,2-Tetrafluoro-1,2dichloroethane
62-73-7Dichlorvos0.11HK
85-00-7Diquat dibromide-0.5
109-87-5Dimethoxymethane5001550
127-19-5N,N-Dimethylacetamide1035HE
124-40-3Dimethylamine24E2000
121-69-7N,N-Dimethylaniline525H
108-84-91,3-Dimethylbutyl acetate25150
300-76-5Dimethyl-1,2-Dibromo-2,2-Dichloroethyl phosphate-3
115-10-6Dimethyl ether200384E2007
598-56-1Dimethylethylamine26
68-12-2N,N-Dimethylformamide515HRE2011
1030S
N,N-Dimethylmethanamide, see N,N-Dimethylformamide
131-11-3Dimethyl phthalate-3
108-83-82,6-Dimethyl-4-heptanone20120
57-14-71,1-Dimethylhydrazine0.010.02HAK
1,2-Dimethylhydrazine0.010.02HK
77-78-1Dimethyl sulphate0.010.05HK
Dinitrobenzene (all isomers)0.151H
10024-97-2Dinitrogen oxide5090R2000
534-52-14,6-Dinitro-o-cresol-0.2H
Dinitrotoluene (all isomers)-0.15HK
123-91-11,4-Dioxane518HKE2011
1036S
117-84-0Dioctyl phthalate-3
138-86-3Dipentene25140A
Dipropylene glycol methyl ether, see (2-Methoxymethylethoxy) propanol
Dipropylene ketone, see Heptane-4-one
Disul, see 2-(2,4-Dichlorophenoxy) ethyl sulphate
97-77-8Disulfiram-2
10025-67-9Disulphur dichloride16
5124-30-1Dicyclohexylmethane-4,4’diisocyanate0.0050.05A4
77-73-6Dicyclopentadiene530
298-04-4Di-Syston-0.1H
330-54-1Diuron-5K
Divinylbenzene (all isomers)1053
Dursban, see Chlorpyriphos
64-19-7Acetic acid1025AE2018
2050S
108-24-7Acetic anhydride520T
Extraction benzene (largely n-hexane)50175
Extraction benzene (unspecified)100500
115-29-7Endosulfan-0.1H
72-20-8Endrin-0.1H
13838-16-9Enflurane0.32.3R2000
Epichlorohydrine, see 1-chloro-2,3-epoxypropane
EPN, see O-ethylO-4- nitrophenyl phenyl thiophosphonate
1,2-Epoxy-3-phenoxy-propane, see Phenyl glycidyl ether
1,2-Epoxypropane, see 1,2-propylene oxide
556-52-52,3-Epoxy-1-propanol2575A
2,3-Epoxypropyl phenyl ether, see Phenyl glycidyl ether
4016-14-22,3-Epoxypropyl isopropyl ether25120
64-17-5Ethanol500950
Ethanolamine, see 2-Aminoethanol
107-21-11,2-Ethanediol2052HE52012
40104S
628-96-61,2-Ethanediol dinitrate0.030.18H
75-08-1Ethanethiol0.51
Ether, see Diethylether
110-80-52-Ethoxyethanol518HRE2011
111-15-92-Ethoxyethyl acetate211HRE2011
141-78-6Ethyl acetate200734E2018
4001468S
140-88-5Ethyl acrylate521HAKE2011
1042S
75-04-7Ethylamine242000
Ethyl-sec-amyl ketone, see 5-Methyl-3-heptanone
100-41-4Ethyl benzene520HKE2000
Ethyl bromide, see Bromoethane
107-15-3Ethylendiamine1025A
Ethylene dibromide, see 1,2-Dibromoethane
Ethylene dichloride, see 1,2-Dichloroethane
Ethylene glycol, see 1,2-Ethanediol
Ethylene glycol dinitrate, see 1,2-Ethandiol nitrate
Ethylene glycol monobutyl ether, see 2-Butoxyethanol
Ethylene glycol monoethyl ether, see 2-Ethoxyethanol
Ethylene glycol monoethyl ether acetate, see 2-Etoxy ethylacetate
Ethylene glycol monomethyl ether, see 2-Methoxyethanol
Ethylene glycol monomethyl ether acetate, see 2-Metoxyethyl acetate
151-56-4Ethyleneimine0.51HK
Ethylene chlorohydrine, see 2-Chloroethanol
75-21-8Ethylene oxide1-K
109-94-4Ethyl formate50150
Ethyl glycol, see 2-Ethoxyethanol
Ethyl glycol acetate, see 2- Ethoxyethyl acetate
104-76-72-Ethylhexanol15.4E2018
1054S
Ethylidene chloride, see 1,1-Dichloroethane
16219-75-35-Ethylidene-2-norbornene525T
Ethyl chloride, see Chloroethane
97-63-2Ethyl methacrylate50250A
Ethylmercaptan, see Ethanethiol
Ethyl methanoate, see Ethyl formate
100-74-3N-Ethylmorpholine523H
O-ethyl-O-(4-nitrophenyl) phenyl monothiophosphonate, see O-ethyl-O-4-nitrophenyl phenyl thiophosphonate
2104-64-5O-ethyl-O-4-nitrophenyl phenyl thiophosphonate-0.5H
78-10-4Ethyl silicate544E2018
108-95-2Phenol14HE2011
312S
92-84-2Phenothiazine-5H
1,2-Phenylenediamine, see o-Phenylenediamine
1,3-Phenylenediamine, see m-Phenylenediamine
1,4-Phenylenediamine, see p-Phenylenediamine
Phenyl ether, see Diphenyl ether
108-45-2m-Phenylenediamine-0.1HA
95-54-5o-Phenylenediamine-0.1HAK
p-Phenylenediamine-0.1HA
638-21-1Phenylphosphine0.050.25T
122-60-1Phenyl glycidyl ether15A
100-63-0Phenylhydrazine-0.6A
Phenyl mercaptan, see Benzenethiol
98-83-92-Phenylpropene50240E
14484-64-1Ferbam-5
12604-58-9Ferrovanadium-1
7782-41-4Fluorine0.10.2E
Fluorides (calculated as F), see Inorganic fluorides
Fluorine monoxide, see Oxygen difluoride
75-43-4Fluorodichloromethane1042
75-69-4Fluorotrichlromethane5002800
Hydrofluoric acid, see Hydrogen fluoride
298-02-2Phorate-0.05H
50-00-0Formaldehyde0.50.6AK
11.2T
75-12-7Formamide1018H
Fosdrin, see Mevinphos
7803-51-2Phosphine0.10.15E
7723-14-0Phosphorous (yellow)-0.1
Phosphoroxychloride, see Phosphoryl chloride
10026-13-8Phosphorus pentachloride-1E
Phosphorus pantaoxide, see Diphosphorous(V) oxide
1314-80-3Phosphorus pentasulphide-1E
7664-38-2Phosphoric acid-1E
Phosphoric acid anhydride, see Diphosphorous(V) oxide
7719-12-2Phosphorous trichloride0.21.5
10025-87-3Phosphoryl chloride0.10.6
75-44-5Phosgene0.050.2TE2012
Freon 11, see Fluorotrichloromethane
Freon 12, see Difluorodichloromethane
Freon 21, Fluorodichloromethane
Freon 22, see Difluorochloromethane
Freon 112, see 1,2-difluoro-1,1,2,2tetrachloroethane
Freon 113, see 1,2,2-trifluoro-1,1,2trichloroethane
Freon 114, see 1,1,2,2-tetrafluoro-1,2dichloroethane
626-17-5m-Phthalodinitrile-5
85-44-9Phthalic acid anhydride-2A
98-01-12-Furaldehyde28H
Furfural, see 2-Furaldehyde
98-00-0Furfuryl alcohol520H
7782-65-2Germanium tetrahydride0.20.6
Glass fibre/polyester, total dust-5
Mica
Total dust
Respirable dust
-6
-3
111-30-8Glutaraldehyde0.20.8AT
Glutaraldehyde (activated by alkaline)-0.25T
55-63-0Glycerol trinitrate0.010.09HE2018
0.020.19S
Glycidol, see 2,3-Epoxy-1-propanol
Graphite, natural
Total dust
Respirable dust

-
-

5
2
Graphite, synthetic
Total dust
Respirable dust

-
-

10
4
7440-58-6Hafnium-0.5
151-67-7Halothane0.020.2R2000
HDI, see Hexane-1,6-diisocyanate
684-16-2Hexafluoroacetone0.10.7H
Hexahydro-1,3,5-trinitro-1,s-triazine,
see Perhydro-1,3,5-trinitro-1,3,5triazine
87-68-3Hexachlorobutadiene0.020.24H
67-72-1Hexachloroethane110H
1335-87-1Hexachloronaphthalene-0.2H
77-47-4Hexachlorocyclopentadiene0.010.1
Hexamethylene diisocyanate, see Hexane-1,6-diisocyanate
100-97-0Hexamethylenetetramine-3
110-54-3n-Hexane2072RE2007
Hexane (except n-Hexane)2501050
124-09-4Hexsanediamine0.51HT2007
822-06-0Hexane-1,6-diisocyanate0.0050.035A4
2-Hexanon, see Hexane-2-one
591-78-6Hexane-2-one14H
sec-Hexyl acetate, see 1,3-Dimethylbutyl acetate
Hexylene glycol, see
2-Methyl-2.4-pentandiol
76-44-8Heptachlor-0.5H
142-82-5Heptane200800E
123-19-3Heptane-4-one25115
110-43-02-Heptanone25115HE
106-35-43-Heptanone2095E2014
5095S
4-Heptanone, see
Heptane-4-one
302-01-2Hydrazine0.010.01HAK
10035-10-6Hydrogen bromide27STE2014
74-90-8Hydrogen cyanide0.91HE2018
45S
61788-32-7Hydrogenated terphenyl219E2018
548S
Hydro-generated terphenyls0.44.4
7664-39-3Hydrogen fluoride0.5HE2010
1.81.5S
Hydrogen phosphide, see Phosphine
7647-01-0Hydrogen chloride57TE
7722-84-1Hydrogen peroxide11.4
7783-07-5Hydrogen selenide0.010.05E
7783-06-4Hydrogen sulphide57E2011
1014T
123-31-9Hydroquinone-0.5AK
868-77-92-Hydroxyethyl methacrylate211A2007
123-42-24-Hydroxy-4-methyl-2- pentanone25120
999-61-12-Hydroxypropylacrylate0.52.9HA
Refractory ceramic fibres0.1 fibre/cm3K2007
111-42-22,2’-Iminodiethanol315
2,2’-Iminodi(ethylamine), see
3-Azapentane-1,5-diamine
95-13-6Indene1045
Indium and Indium compounds (calculated as In)-0.1
Isoamyl acetate, see
(3-Methylbutyl) acetate
Isoamyl alcohol, see 3-Methyl-1-butanol
Isobutyl acetate, see Butyl acetate (all isomers)
97-86-9Isobutyl methacrylate50300A
Isocyanates, see diisocyanates
26675-46-7Isoflurane215R2010
78-59-1Isophorone525T
4098-71-9Isophorone diisocyanate0.0050.045A4
26952-21-6Isooctan-1-ol25135
Isooctyl alcohol, see Isooctan-1-ol
78-78-4Isopentane250750E2007
123-92-2Isopentyl acetate50260E
Isopropanol, see 2-propanol
109-59-12-Isopropoxyethanol2080
2-Isopropoxypropane, see
Diisopropyl ether
108-21-4Isopropyl acetate100420
Isopropylamine, see 2-Propylamine
768-52-5Isopropylaniline211H
Isopropyl glycidyl ether, see 2,3-Epoxypropyl isopropyl ether
1309-37-1Iron(III)oxide (calculated as Fe)-3
13463-40-6Iron pentacarbonyl0.010.08
Iron salts (calculated as Fe)-1
7553-56-2Iodine0.11T
74-88-4Iodomethane15H
Iodoform, see Triiodomethane
Cadmium and inorganic
Cadmium compounds (except cadmium sulphate) (calculated as Cd)
-0.05K
1306-19-0Cadmium oxide (calculated as Cd)-0.02KT
151-50-8Potassium cyanide0.91HE2018
45S
1310-58-3Potassium hydroxide-2T
156-62-7Calcium cyanamide-0.5
1305-62-0Calcium hydroxide
Respirable dust
-1E2018
4S
1305-78-8Calcium oxide
Respirable dust
-1E2018
4S
8001-35-2Camphechlor-0.5H
76-22-2Camphor (synthetic)212
105-60-2ε-Caprolactam1040E52012
63-25-2Carbaryl-5H
1563-66-2Carbofuran-0.1H
124-38-9Carbon dioxide50009000E
75-15-0Carbon disulphide515HRE2011
630-08-0Carbon monoxide2023RE2018
100117S6
558-13-4Carbon tetrabromide0.11.4
Carbon tetrachloride; see Tetrachloromethane
353-50-4Carbonyl fluoride25
Carbonyl chloride, see Phosgene
13466-78-9δ-Carene25140A
Catechol, see
1,2-Dihydroxybenzene
463-51-4Ketene0.50.9
Quinone, see
1,4-Benzoquinone
Steatite
Total dust
Respirable dust
-

-
6

3
7782-50-5Chlorine0.51.5E2007
13T
107-20-0Chloroacetaldehyde13T
532-27-4α-Chloroacetophenone0.050.3
79-04-9Chloroacetyl chloride0.050.2H
108-90-7Chlorobenzene523E2007
2698-41-1o-Chlorobenzylidenemalononitrile0.050.4H
Chlorobromomethane, see Bromochloromethane
57-74-9Chlordane-0.5H
Chlorodifluoromethane, see Difluorochloromethane
10049-04-4Chlorine dioxide0.10.3
106-89-81-chloro-2,3-epoxypropane0.51.9HAK
55720-99-5Chlorinated diphenyl oxide-0.5H
Chlorinated camphene, see Toxaphene
75-00-3Chloroethane100270KE2007
107-07-32-Chloroethanol13HT
Chloroethene, see Vinyl chloride
74-87-3Chloromethane2550K
Chloromethylbenzene, see Chlorotoluene
100-00-51-Chloro-4-nitrobenzene-1H
600-25-91-Chloro-1-nitropropane210
Chloroform, see Trichloromethane
Chloropicrin, see
Trichloronitromethane
126-99-82-Chloroprene13.6H
107-05-13-Chloropropene13H
2921-88-2Chlorpyrifos-0.2H
2039-87-4o-Chlorostyrene25140
100-44-7α-Chlorotoluene15
95-49-8o-Chlorotoluene25125H
7790-91-2Chlorotrifluoride0.10.4
7440-50-8Copper
Fumes
Dust
-

-
0.1

1
Cobalt (fumes) and inorganic Cobalt compounds (calculated as Co, except Co(II)-0.02AR2000
Cobalt, Co(II) compounds
(fumes) and inorganic
( calculated as Co)
-0.02AKR2000
Cobalt hydrocarbonyl ( calculated as Co)-0.1
Cobalt carbonyl (calculated as Co)-0.1
1319-77-3Cresols (all isomers)522HE
14464-46-1Cristobalite
Total dust
Respirable dust
-

-
0.15

0.05
K7

K7
Chromium and Cr2 ± and Cr3 ± compounds (calculated as Cr)-0.5E
Chromic acid and chromates (calculated as Cr(VI))-0.005AK2010
Chrotonaldehyde, see (E)-2-butenal
(E)-chrotonaldehyde, see
(E)-2-butenal
Coal dust
Total dust
Respirable dust
-

-
4

1.5
Cumene, see 1-Methylethyl benzene
14808-60-7α-quartz
Total dust
Respirable dust
-

-
0.3

0.1
K7

K7
Mercury and Mercury compounds (except alkyl compounds) (calculated as Hg) Biological limit value for urine-0.02AE2007
30 µg Hg/g creatinine8
Mercury, alkyl compounds (calculated as Hg)-0.01AH
Limonene, see d-Limonene, i-Limonene and Dipentene
5989-27-5d-Limonene25140A
5989-54-8i-Limonene25140
58-89-9Lindane-0.5H
7580-67-8Lithium hydride
Inhalable
-0.02SE2018
Soldering wire with resincontaining core (calculated as formaldehyde)-0.1
Laughing gass, see Dinitrogen oxide
1309-48-4Magnesium oxide-101
121-75-5Malathion-5H
108-31-6Maleic acid anhydride0.20.8A
7439-96-5Manganese and inorganic Managenese compounds (calculated as Mn)2018
Inhalable fraction-0.2E9
Respirable fraction-0.05E9
12079-65-1Manganese cyclopentadienyl tricarbonyl (calculated as Mn)-0.1H
64-18-6Formic acid59E
MDI, see Diphenylmethane- 4,4’-diisocyanate
Flour dust, inhalable3A102000
Mercaptoacetic acid, see Thioglycolic acid
108-67-8Mesitylene (trimethylbenzenes)20100
Mesityloxide, see
4-methyl-3-penten-2-one
79-41-4Methacrylic acid2070
Methacrylic acid methyl ester, see Methyl methacrylate
67-56-1Methanol100130HE
74-93-1Methanthiol0.51
90-04-02-Methoxyaniline0.10.5HK
104-94-94-Methoxyaniline0.10.5H
109-86-42-Methoxyethanol13.1HRE2011
111-77-32-(2-Methoxyethoxy)ethanol1050HRE2007
110-49-62-Metoxyethyl acetate14.9HRE2011
150-76-54-Methoxyphenol-5
72-43-5Methoxychlor-5
34590-94-8(2-Methoxymethylethoxy) propanol50300HE
107-98-21-Methoxy-2-propanol50180HE
108-65-61-Methoxy-2-propyl acetate50270HE
1589-47-52-Methyloxy-1-propanol2075HR
70657-70-42-Methoxy-1-propyl acetate20110HR
16752-77-5Methomyl-2.5H
79-20-9Methyl acetate100305
Methylacetylene, see Propyne
Methyl acetylene-Propadien mixture500900
96-33-3Methyl acrylate518HAE2011
1036S
126-98-7Methylacrylonitrile13HA
74-89-5Methylamine1012
Methylamyl alcohol, see 4-Methyl-2-pentanol
Meholamyl ketone, see 2-Heptanone
100-61-8N-Methylaniline0.52H
75-55-82-Methylaziridine25HK
Methyl bromide, see Bromomethane
3-Methyl butanone, see 3-Methyl-2-butanone
563-80-43-Methyl-2-butanone100350H
123-51-33-Methyl-1-butanol50180
626-38-01-Methylbutyl acetate50260E
3-methylbutyl acetate, see Isopentyl acetate
98-51-11-Methyl-4-tert-butylbenzene1060
Methylbutyl ketone, see Hexane-2-one
137-05-3Methyl -2-cyanoacrylate28A
Methylene-bis(4- cyclohexyl isocyanate ), see Dicyclohexylmethane-4,4’-diisocyanate
Methylene-bis-phenyl diisocyanate, see Diphenylmethane- 4,4’-diisocyanate
101-77-94,4’-Methylenedianiline0.10.8HAK
Methylene chloride, see Dichloromethane
98-82-81-Methylethyl benzene20100HKE2012
50250S
Methylethyl ketone, see Butanone
Methylethyl ketone peroxide, see 2-Butanone peroxide
Methylphenol, see Cresols
Methyl formate, see Methyl methanoate
Methyl glycol, see 2-Methoxyethanol
Methyl glycol acetate, see 2-Methoxyethyl acetate
110-12-35-Methyl-2-hexanone2095E2014
50250S
541-85-55-Methyl-3-heptanone20100E2014
20107S
60-34-4Methyl hydrazine0.010.02HK
Methyl isobutyl carbinol, see 4-Methyl-2-pentanol
Methyl ispbutyl ketone, see 4-Methylpentan-2-one
624-83-9Methyl isocyanate0.020.05S
(5 min)
AE11
2011
Methyl isopropyl ketone, see 3-Methyl-2-butanone
Methyl iodide, see Iodomethane
Methyl chloride, see Chloromethane
Methyl chloroform, see 1,1,1-Trichloroethane
Methyl mercaptan, see Methanthiol
80-62-6Methyl methacrylate25100AE2011
100400S
107-31-3Methyl methanate50125HE2018
100250S
107-41-52-Methyl-2,4-pendandiol20100T
872-50-4N-Methyl-2-pyrrolidone520HRE2011
2080S
108-11-24-Methyl-2-pentanol2080H
108-10-14-Methylpentan-2-one2083HE2012
50208S
141-79-74-Methyl-3-penten-2-one1040
4-Methylpentyl-2-acetate, see 1,3-Dimethylbutyl acetate
78-83-12-Methylpropan-1-ol2575HT2007
75-65-02-Methyl-2-propanol2575HT2007
Methyl propyl ketone, see 2-Pentanone
681-84-5Methyl silicate16
α-Methylstyrene, see 2-Phenylpropene
108-87-2Methylcyclohexane200800
Methylcyclohexanol (all isomers)25120
583-60-82-Methylcyclohexanon25115H
12108-13-3Methylcyclopentadienyl manganese tricarbonyl (calculated as Mn)0.10.2H
479-45-8N-Methyl-2,4,6-N-tetranitroaniline-1.5HA
7786-34-7Mevinphos0.010.1H
MMMF (Man Made Mineral Fibers), see Refractory ceramic fibres, thin glass fibres for special purposes, mineral wool and AES wool
Mineral wool1 fibre/cm3122007
Molybdenum compounds, soluble (calculated as Mo)-5
Molybdenum compounds, insoluble (calculated as Mo)-10
Monofluorodichloromethane, see Fluorodichloromethane
110-91-8Morpholine1036HE2007
91-20-3Naphthalene1050E
3173-72-6Naphthalene-1,5-diisocyanate0.0050.04A4
86-88-41-Naphthylthiourea-0.3
26628-22-8Sodium azide-0.1E2014
-0.3S
Sodium bisulphite, see Sodium hydrogen sulphite
143-33-9Sodium cyanide0.91HE2018
45S
62-74-8Sodium fluoroacetate-0.05H
7631-90-5Sodium hydrogen sulphite-5
1310-73-2Sodium hydroxide-2T
7681-57-4Sodium methabisulphite (Sodium pyrosulphate)-5
Sodium tetraborates:
1330-43-4Anhydrous-1
1303-96-4Decahydrates-5
12447-40-4Pentahydrates-1
463-82-1Neopenthane250750E2007
Nickel and Nickel compounds (calculated as Ni)-0.05AKR2000
Nickel carbonyl, see Nickel tetracarbonyl
13463-39-3Nickel tetracarbonyl0.0010.007HKR
54-11-5Nicotine-0.5HE
100-01-6p-Nitroaniline-3H
98-95-3Nitrobenzene0.21HKRE2007
79-24-3Nitroethane2062HE2018
100312S
10102-44-0Nitrogen dioxide0.50.96E132018
11.91S
10102-43-9Nitrogen monoxide22.5E142018
Nitrogen oxide, see Nitrogen monoxide
7783-54-2Nitrogen trifluoride1029
Nitroglycerol, see Glycerol trinitrate
Nitroglycol, see 1,2-Ethandiol dinitrate
p-Nitrochlorobenzene, see 1-chloro-4-nitrobenzene
75-52-5Nitromethane50125
108-03-21-Nitropropane2070
79-46-92-Nitropropane1035K
Nitrotoluene (all isomers)15.5H
111-84-2Nonane100525
144-62-7Oxalic acid-1E
2-oxo-Hexamethylenimine, see Caprolactam
05/07/22382,2’-[oxybis(mehtylene)] bisoxirane0.10.5AT
7783-41-7Oxygen difluoride0.050.1
2234-13-1Octachloronaphthalene-0.1H
111-65-9Octane150725
2-Octanol, see Isooctan-1-ol
Oil vapour-50
Oil mist (mineral oil particles)-1
Organic dust, total dust-5
20816-12-0Osmium tetraoxide0.00020.002
10028-15-6Ozone0.10.2
PAH (polyaromatic hydrocarbons)-0.04K15162010
8002-74-2Paraffin (fumes)-2
4685-14-7Paraquat-0.1H
56-38-2Paration-0.05H
298-00-0Parathion-methyl-0.2H
1336-36-3PCB (polychlorinated biphenyls)-0.01HK
19624-22-7Pentaborane0.0050.01
76-01-7Pentachloroethane540H
87-86-5Pentachlorophenol0.050.5HK
1321-64-8Pentachloronaphtalene-0.5H
109-66-0Pentane250750E
96-22-0Pentane-3-one100350
Pentanol (all isomers)50180
107-87-92-Pentanone75260
3-Pentanone, see Pentane-3-one
620-11-13-Pentyl acetate50260E
628-63-7Pentyl acetate50260E
Pentyl acetat (all isomers)50260
121-82-4Perhydro-1,3,5-trinitro-1,3,5triazine-1.5H
Perchloroethylene, see Tetrachloroethene
Perchloromethyl mercaptan, see Trichloromethane sulfenyl chloride
7616-94-6Perchloril fluoride314
Perlite
Total dust-10
Respirable dust-4
Persulphates-2A
88-89-1Picric acid-0.1HE
83-26-1Pindone-0.1
80-56-8α-Pinene25140H
127-91-3β-Pinene25140
110-85-0Piperazine0.1-AE2014
0.3S
Pival, see Pindone
2-Pivaloyl-1,3-indandione, see Pindone
Platinum compounds, soluble (calculated as Pt)-0.002
7440-06-4Platinum, metallicNo prescribed limit valueE2012
Plictran, see Cyhexatin
Polyester/glass fibre, total dust-5
74-98-6Propane500900
57-55-6Propane-1,2-diol25792007
6423-43-4Propane-1,2-diyl dinitrate0.050.3H
1,2-Propanediol dinitrate, see Propane-1,2-diyl dinitrate
71-23-81-Propanol100245H
67-63-02-Propanol100245
Propargyl alcohol, see 2-Propyne-1-ol
Propenal, see acrylaldehyde
107-18-62-Propen-1-ol25HE
79-09-4Propionic acid1030E
57-57-8β-Propiolactone0.51.5K
114-26-1Propoxur-0.5
2-Propyl acetate, see isopropyl acetate
109-60-4n-Propyl acetate100420
75-31-02-Propylamine512
1,2-Propylene glycol dinitrate, see Propane-1,2-diyl dinitrate
Propylene glycol monomethyl ether, see 1-Methoxy-2-propanol
2-Propyl glycidyl ether, see 2,3-Epoxypropyl isopropyl ether
Propylenimine, see 2-Methylaziridine
75-56-91,2-Propylene oxide12HAK
iso-Propyl glycidyl ether, see 2,3-Epoxypropyl isopropyl ether
627-13-4Propyl nitrate2090
74-99-7Propyne500825
107-19-72-Propyne-1-ol12.5H
8003-34-7Pyrethrin-1E2007
110-86-1Pyridine515E
Pyrocatechol, see 1,2-Dihydroxybenzene
Resorcinol, see 1,3-Benzenediol
Respirable dust in the silicon carbide industry, in furnace houses and furnace-houserelated departments in the silicon carbide industry0.5
7440-16-6Rhodium-0.1
Rhodium compounds, soluble (calculated as Rh)-0.001
299-84-3Ronnel-5
83-79-4Rotenone-5
7697-37-2Nitric acid25E2007
Hydrochloric acid, see Hydrogen chloride
Selenium and inorganic Selenium compounds (except selenium sulphide, hydrogen selenide and selenium hexsafluoride) (calculate as Se)-0.05A2000
7783-79-1Selenium hexafluoride0.050.4
7446-34-6Selenium sulphide0.05AK2000
28523-86-6Sevoflurane5352010
7803-62-5Silane0.50.7
7440-21-3Silicon-101
Silicon carbide fibres0.1 fibre/cm3K
Silicon carbide, see Respirable dust in the silicon carbide industry
Silicon tetrahydride, see Silanium
7646-85-7Zinc chloride-1
1314-13-2Zinc oxide-5
Irritating dust
Total dust-10
Respirable dust-5
Stibin, see Antimony hydride
57-24-9Strychnine-0.15T
100-42-5Styrene25105M
1395-21-7Subtilisins (enzymes used in detergents)-0.00006T
3689-24-5Sulfotep-0.1HE2014
2699-79-8Sulphuryl fluoride520
Welding fumes (unspecified)-517
7446-09-5Sulphur dioxide0.51.3E182018
1.02.7S
2551-62-4Sulphur hexafluoride10006000
Sulphur monochloride, see Disulphur dichloride
5714-22-7Sulphur pentafluoride0.010.1T
7664-93-9Sulphuric acid aerosol, thoracic fraction-0.1KE2011
7783-60-0Sulphur tetrafluoride0.10.4
110-82-7Cyclohexane150525E
108-93-0Cyclohexanol25100
108-94-1Cyclohexanon1040HE2014
2080S
110-83-8Cyclohexene150510
108-91-8Cyclohexylamine1040H
Cyclonite, see Perhydro-1,3,5-trinitro-1,3,5triazine
542-92-71,3-Cyclopentadiene40110
Synthetic mineral fibres, see MMMF
7440-22-4Silver, metal dust and fumes-0.1E
Silver, soluble compounds (calculated as Ag)-0.01E
2,4,5-T, see 2,4,5-Trichlorophenoxyacetic acid
Talcum without fibres
Total dust
Respirable dust
-

-
6

2
TDI, see 2,4- and 2,6-Toluene diisocyanate
13494-80-9Tellurium-0.1
7783-80-4Tellurium hexsafluoride0.020.2
TEPP, see Tetraethyl pyrophosphate
Terphenyls0.54.5T
8006-64-2Terpentine (of plant origin)25140HA
79-27-61,1,2,2-Tetrabromoethane114
Tetrabromomethane, see Carbon tetrabromide
78-00-2Tetraethyl lead0.010.075HR
107-49-3Tetraethyl pyrophosphate0.0040.05H
76-14-21,1,2,2-tetrafluoro-1,2dichloroethane5003500
109-99-9Tetrahydrofuran50150HE
79-34-51,1,2,2-Tetrachloroethane17H
127-18-4Tetrachloroethene640HKRE2018
18120S
Tetrachloroethylene, see Tetrachloroethene
56-23-5Tetrachloromethane16.3HKE2018
319S
1335-88-2Tetrachloronaphtalene-2H
75-74-1Tetramethyl lead0.010.075HR
3333-52-6Tetramethylsuccinonitrile0.53H
7722-88-5Tetrasodium pyrophosphate-5
509-14-8Tetranitromethane0.0050.04K
Tetryl, see N-Methyl-2,4,6-N-tetranitroaniline
Thallium and soluble Thallium compounds (calculated as Tl)-0.1H
7719-09-7Thionyl chloride15T
Tin compounds, organic (calculated as Sn)-0.1H
Tin compounds, inorganic (calculated as Sn)-2E
68-11-1Thioglycolic acid15
137-26-8Thiram-5AM
13463-67-7Titanium dioxide-5
TNT, see 2,4,6-Trinitrotoluene
Toxaphene, see Camphechlor
108-88-3Toluene2594HE
584-84-92,4-Toluene diisocyanate0.0050.035AK4
91-08-72,6-Toluene diisocyanate0.0050.035AK4
95-53-4o-Toluidine14.5HK
Wood dust from exotic hardwoods, oak and beech, total dust-1GK19
Wood dust from Nordic woods, except oak and beech, total dust-2K
75-25-2Tribromomethane0.55HK
126-73-8Tributyl phosphate0.22.5
Tri(cyclohexyl)tin hydroxide, see Cyhexatin
15468-32-3Tridymite
Total dust-0.15K7
Respirable dust-0.05K7
102-71-6Triethanolamine-5
121-44-8Triethylamine28HE
112-24-3Triethylenetetramine16A2007
603-34-9Triphenylamine-5
115-86-6Triphenylphosphate-3
Trifluoromonobromomethane, see Bromotrifluoromethane
76-13-11,2,2-Trifluoro-1,1,2trichloro-ethane5003800
75-47-8Triiodomethane0.23
120-82-11,2,4-Trichlorobenzene215HE2014
76-03-9Trichloroacetic acid0.755
71-55-61,1,1-Trichloroethane50270E
79-00-51,1,2-Trichloroethane1054H
79-01-6Trichloroethene1050K
Trichloroethylene, see Trichloroethene
Trichlorofluoromethane, see Fluorotrichloromethane
93-76-5(2,4,5-Trichlorophenoxy) acetic acid-5H
67-66-3Trichloromethane210HKRE
594-42-3Trichloromethanesulphenyl chloride0.10.8
1321-65-9Trichloronaphtalene-5H
76-06-2Trichloronitromethane0.10.7
96-18-41,2,3-Trichloropropane1060H
Trimellitic acid anhydride, see Benzene-1,2,4-tricarboxylic acid-1,2-anhydride
75-50-3Trimethylamine1024
526-73-81,2,3-Trimethylbenzene20100E
95-63-61,2,4-Trimethylbenzene20100E
Trimethylbenzene (all isomers), see Mesitylene
121-45-9Trimethyl phosphite0.52.6
118-96-72,4,6-Trinitrotoluene-0.1H
78-30-8Triorthocresyl phosphate-0.1
Tricyclohexylhydroxytin, see Cyhexatin
Thin glass fibres for special purposes0.1 fibre/cm3K202007
Inorganic fluorides (calculated as F)-0.5E2010
Uranium and Uranium compounds (calculated as U)-0.2
110-62-3Valeraldehyde2590
7440-62-2Vanadium
Fumes (calculated as V)-0.05T
Dust (calculated as V)-0.2
108-05-4Vinyl acetate517.6KE2011
1035.2S
Vinyl benzene, see Styrene
593-60-2Vinyl bromide14K
Vinylidene chloride, see 1,1-Dichloroethane
75-01-4Vinyl chloride13G K
106-87-6Vinylcyclohexene dioxide1060
Vinyl toluene (all isomers)50240
1304-82-1Bismuth telluride-101
Bismuth telluride (with added Selenium)-5
81-81-2Warfarin-0.1
White Spirit (content of aromatic compounds <22%)50275
White Spirit (content of aromatic compounds >22%)25120
Tungsten and insoluble Tungsten compounds (calculated as W)-5
Tungsten compounds, soluble (calculated as W)-1
1330-20-7Xylene (all isomers)25108HE
108-38-3m-Xylene25108HE
106-42-3p-Xylene25108HE
95-47-6o-Xylene25108HE
1477-55-0m-Xylene-α-,α-Diamine)-0.1T
Xylidine (all isomers)15H
7440-65-5Yttrium-1
Zirconium compounds (calculated as Zr)-5
Footnotes
1 The limit value is set equal to the value for nuisance dust.
2 In agriculture, a limit value equal to 20 ppm is applicable during a transitional period (2013.2024) for livestock production in older farm buildings (farm buildings erected before 2002).
3 The limit value applies to raw cotton of less than 15 µm.
4 The short-term value for diisocyanates is 0.01 ppm.
5 The limit value is based on the calculated aggregate sum of the gaseous and particulate (aerosol) form of the substance.
6 Only for the short-term value: Some undertakings in the smelting industry will be unable to comply with this short-term value for technical/financial reasons. These undertakings are responsible for documenting a sound working environment. Written instructions must be prepared for work in a CO atmosphere.
For the underground mining and tunnelling industries, the following limit value applies for carbon monoxide up to 21 August 2023: 25 ppm, 29 mg/m., and short-term exposure should not exceed 100 ppm. If such values can occur, written instructions shall be prepared for work in CO atmospheres.
7 Dust containing α-Quartz, Cristobalite and/or Tridymite shall be assessed on the basis of the summation equation. At the same time, the values for nuisance dust must be must be complied with.
8 Measurements of compliance with this biological limit value is conditional on voluntary cooperation by employees.
9 Some undertakings in the smelting industry will be unable to comply with the limit values for technical/financial reasons. These undertakings are responsible for documenting a sound working environment. Such undertakings must have a plan for how to reduce exposure and must demonstrate lower values over time. The Norwegian Labour Inspection Authority, trade union representatives and safety representatives must be consulted and informed of annual plans and the results achieved.
10 The limit value for flour dust is set equal to the value for inhalable dust.
11 The short-term value is below the odour threshold.
12 By ‘mineral wool’ is meant glass wool (except thin glass fibres for special purposes), rock wool and slag wool.
13 Some undertakings will be unable to comply with the limit values for technical/financial reasons. These undertakings are responsible for documenting a sound working environment. Such undertakings must have a plan for how to reduce exposure and must demonstrate lower values over time. The Norwegian Labour Inspection Authority, trade union representatives and safety representatives must be consulted and informed of annual plans and the results achieved.
For the underground mining and tunnelling industries, the following limit value applies for nitrogen dioxide up to 21 August 2023: 0.6 ppm, 1.1 mg/m3.
14 Some undertakings will be unable to comply with the limit values for technical/financial reasons. These undertakings are responsible for documenting a sound working environment. Such undertakings must have a plan for how to reduce exposure and must demonstrate lower values over time. The Norwegian Labour Inspection Authority, trade union representatives and safety representatives must be consulted and informed of annual plans and the results achieved.
For the underground mining and tunnelling industries, the following limit value applies for nitrogen monoxide up to 21 August 2023: 25 ppm, 30 mg/m3.
15 The limit value applies to particulate PAH collected by filtration and is based on the sum of the following 21 PAH compounds: Anthracene (3), Benzo(a)anthracene (2A), benzo[a]fluorene (3), benzo[b]fluorene (3), benzo[b]fluoranthene (2A), benzo[j] fluoranthene (2A), benzo[k]fluoranthene (2A), Benzo[a]pyrene (1), Benzo[e]pyrene (3), benzo[ghi]perylene (3), dibenzo[a,h])anthracene (2A), dibenzo[a,e]pyrene (3), dibenzo[a,h]pyrene (2A), dibenzo[a,i]pyrene (2A), dibenzo[a,l]pyrene (2A), phenanthrene (3), fluoranthene (3), indeno((1,2,3-cd)pyrene (2B), Chrysen (2A), Pyrene (3) and triphenylene (3).
16 Naphthalene and Biphenyl are gaseous PAHs that have accumulated in the absorbent. These two substances shall be assessed separately in relation to the respective limit values that apply to each of them.
17 Welding/metal fumes contain different substances. In addition to the limit value for welding fumes (unspecified), the value for each individual substance in the welding fumes shall be complied with.
18 Some undertakings will be unable to comply with the limit values for technical/financial reasons. These undertakings are responsible for documenting a sound working environment. Such undertakings must have a plan for how to reduce exposure and must demonstrate lower values over time. The Norwegian Labour Inspection Authority, trade union representatives and safety representatives must be consulted and informed of annual plans and the results achieved.
19 The limit value applies to the inhalable fraction of the wood dust. If dust from hardwoods is mixed with other wood dust, the limit value shall apply to all wood dust that is present in the mixture.
20 These fibres correspond to ‘Special-purpose glass fibres’ in the International Agency for Research on Cancer (IARC) monographs on the evaluation of carcinogenic risks to humans. Man-made vitreous fibres 2002: Vol 81. http://monographs.iarc.fr/ENG/Monographs/vol81/volume81.pdf