Subsection 1: Setting occupational exposure limit values

Articles in this section · 3

Article R4412-149

French Labour CodeIn force

Updated 3 Nov 2023

The concentrations of the chemical agents present in the atmosphere of the workplaces listed in the following table must not exceed, in the workers' breathing zone, the occupational exposure limit values defined below:


Name

Number

EC (1)


Number

CAS (2)


Occupational exposure limit value


Occupational exposure limit value


Comments

Transitional measures


8h (3)

short term (4)

mg/ m3 (5)

ppm (6)

fibres per cm3

mg/ m3

ppm

fibres per cm3

Ethyl acetate

205-500-4

141-78-6

734

200

-

1468

400

-

-

-

Isobutyl acetate

203-745-1

110-19-0

241

50

-

723

150

-

-

Comes into force on 1 March 2022

Isopentyl acetate

204-662-3

123-92-2

270

50

-

540

100

-

-

-

2-Butoxyethyl acetate

203-933-3

112-07-2

66,5

10

-

333

50

-

Skin (7)

-

2-ethoxyethyl acetate

203-839-2

111-15-9

11

2

-

-

-

-

Skin (7)

-

n-Butyl acetate

204-658-1

123-86-4

241

50

-

723

150

-

-

Comes into force on 1 March 2022

2-Methoxyethyl acetate

203-772-9

110-49-6

5

1

-

-

-

-

Skin (7)

-

2-Methoxy-1-methylethyl acetate

203-603-9

108-65-6

275

50

-

550

100

-

Skin (7)

-

1-Methylbutyl acetate

210-946-8

626-38-0

270

50

-

540

100

-

-

-

Sec-butyl acetate

203-300-1

105-46-4

241

50

-

723

150

-

-

Comes into force on 1 March 2022

Pentyl acetate

211-047-3

628-63-7

270

50

-

540

100

-

-

-

Vinyl acetate

203-545-4

108-05-4

17,6

5

-

35,2

10

-

-

-

Acetone

200-662-2

67-64-1

1210

500

-

2420

1000

-

-

-

Acetonitrile

200-835-2

75-05-8

70

40

-

-

-

-

Skin (7)

-

Hydrochloric acid

231-595-7

7647-01-0

-

-

-

7,6

5

-

-

-

Hydrocyanic acid expressed as cyanide

200-821-6

74-90-8

1

0,9

-

5

4,5

-

Skin (7)

-

Acrylamide

201-173-7

79-06-1

0,1

-

-

-

-

-

Skin (7

-

Ethyl acrylate

205-438-8

140-88-5

21

5

-

42

10

-

-

-

Methyl acrylate

202-500-6

96-33-3

18

5

-

36

10

-

-

-

Isoamyl alcohol

204-633-5

123-51-3

18

5

-

37

10

-

-

Comes into force on 1 March 2022

2-aminoethanol

205-483-3

141-43-5

2,5

1

-

7,6

3

-

Skin (7)

-

Anhydrous ammonia

231-635-3

7664-41-7

7

10

-

14

20

-

-

-

Sodium azide

247-852-1

26628-22-8

0,1

-

0,3

-

Skin (7)

-

Benzene

200-753-7

71-43-2

3,25

1

-

-

-

-

Skin (7)

-

Beryllium and its inorganic compounds (inhalable fraction)

-

-

0,0002

-

-

-

-

-

Skin (9) and respiratory (10) sensitisation

Comes into force on 1 March 2022 with a transitional limit value of 0.0006 mg/ m3 applicable until 11 July 2026.

Bisphenol A (inhalable dust)

201-245-8

80-05-7

2

-

-

-

-

-

-

-

Wood dust

1

-

-

-

-

-

-

Bromine

231-778-1

7726-95-6

0,7

0,1

-

-

-

-

-

-

Bromoethylene

209-800-6

593-60-2

4,4

1

Methyl bromide (8)

200-813-2

74-83-9

20

5

-

-

-

-

-

-

1,3-butadiene

203-450-8

106-99-0

2,2

1

-

-

-

-

-

-

Butanone

201-159-0

78-93-3

600

200

-

900

300

-

Skin (7)

-

2-butoxyethanol

203-905-0

111-76-2

49

10

-

246

50

-

Skin (7)

-

Cadmium and its inorganic compounds (inhalable fraction)

-

-

0,001

-

-

-

-

-

Limit value: 0.004 mg/ m3 (11) until 11 July 2027

Chlorine

231-959-5

7782-50-5

-

-

-

1,5

0,5

-

-

-

Chlorobenzene

203-628-5

108-90-7

23

5

-

70

15

-

-

-

Chloroform

200-663-8

67-66-3

10

2

-

-

-

-

Skin (7)

-

Vinyl chloride monomer

200-831-0

75-01-4

2,59

1

-

-

-

-

-

-

Hexavalent chromium and its compounds

-

-

0,001

-

0,005

-

Skin (7)

-

Cumene (2-phenyl-

propane) (12)


202-704-5

98-82-8

50

10

-

250

50

-

Skin (7)

Comes into force on 1 March 2022

Cyclohexane

203-806-2

110-82-7

700

200

-

-

-

-

-

-

Cyclohexanone

203-631-1

108-94-1

40,8

10

-

81,6

20

-

-

-

1,2-dichlorobenzene

202-425-9

95-50-1

122

20

-

306

50

-

Skin (7)

-

1,4-dichlorobenzene

203-400-5

106-46-7

4,5

0,75

-

60

10

-

Skin (7)

-

1,1-dichloroethylene

200-864-0

75-35-4

8

2

-

20

5

-

-

-

Dichloromethane

200-838-9

75-09-2

178

50

-

356

100

-

Skin (7)

-

N, N-dimethylaceta-mide

204-826-4

127-19-5

7,2

2

-

36

10

-

Skin (7)

-

N, N-dimethylforma-mide

200-679-5

68-12-2

15

5

-

30

10

-

Skin (7)

-

Dimethylamine

204-697-4

124-40-3

1,9

1

-

3,8

2

-

-

-

Diethylamine

203-716-3

109-89-7

15

5

-

30

10

-

-

-

1,2-dichloroethane (ethylene dichloride)

203-458-1

107-06-2

8,2

2

-

-

-

-

Skin (7)

Carbon disulphide

200-843-6

75-15-0

15

5

-

-

-

-

Skin (7)

-

1,4-dioxane

204-661-8

123-91-1

73

20

-

-

-

-

-

-

Nitrogen dioxide

233-272-6

10102-44-0

0,96

0,5

-

1,91

1

-

-

-

Epichlorohydrin

203-439-8

106-89-8

1,9

-

-

-

-

-

Skin (7)

1,2-epoxypropane (propylene oxide)

200-879-2

75-56-9

2,4

1

-

-

-

-

-

-

2-ethoxyethanol

203-804-1

110-80-5

8

2

-

-

-

-

Skin (7)

-

Ethylamine

200-834-7

75-04-7

9,4

5

-

28,2

15

-

-

-

Ethylbenzene

202-849-4

100-41-4

88,4

20

-

442

100

-

Skin (7)

-

Refractory ceramic fibres classified as carcinogenic

-

-

-

-

0,1

-

-

-

-

-

Hydrogen fluoride

231-634-8

7664-39-3

1,5

1,8

-

2,5

3

-

-

-

Formaldehyde

200-001-8

50-00-0

0,37

0,3

-

0,74

0,6

-

Skin sensitisation (9)

Limit value of 0.62 mg/ m3 or 0.5 ppm (3) for the health care, funeral and embalming sectors until 11 July 2024

n-heptane

205-563-8

142-82-5

1668

400

-

2085

500

-

-

-

Heptane-2-one

203-767-1

110-43-0

238

50

-

475

100

-

Skin (7)

-

Heptane-3-one

203-388-1

106-35-4

95

20

-

-

-

-

-

-

n-hexane

203-777-6

110-54-3

72

20

-

-

-

-

-

-

Mineral oils previously used in internal combustion engines to lubricate and cool moving engine parts

-

-

-

-

-

-

-

-

Skin (7)

Hydrazine

206-114-9

302-01-2

0,013

0,01

-

-

-

-

Skin (7)

-

Methyl isocyanate

210-866-3

624-83-9

-

-

0,02

-

-

-

Mixtures of polycyclic aromatic hydrocarbons, in particular those containing benzo[a]pyrene

-

-

-

-

-

-

-

-

Skin (7)

Methyl methacrylate

201-297-1

80-62-6

205

50

-

410

100

-

-

-

Methanol

200-659-6

67-56-1

260

200

-

-

-

-

Skin (7)

-

2-methoxyethanol

203-713-7

109-86-4

3,2

1

-

-

Skin (7)

-

(2-methoxymethyl

ethoxy)-propanol


252-104-2

34590-94-8

308

50

-

-

-

-

Skin (7)

-

1-methoxypropane-2-ol

203-539-1

107-98-2

188

50

-

375

100

-

Skin (7)

-

4-methylpentane-2-one

203-550-1

108-10-1

83

20

-

208

50

-

-

-

Mercury and divalent inorganic mercury compounds, including mercuric oxide and mercuric chloride

-

-

0,02

-

-

-

-

-

-

-

Nitrogen monoxide

233-271-0

10102-43-9

2,5

2

-

-

-

-

-

-

Carbon monoxide

211-128-3

630-08-0

23

20

-

117

100

-

-

Morpholine

203-815-1

110-91-8

36

10

-

72

20

-

-

-

2-nitropropane

201-209-1

79-46-9

18

5

-

-

-

-

-

-

Diethyl ether

200-467-2

60-29-7

308

100

-

616

200

-

-

-

Ethylene oxide

200-849-9

75-21-8

1,8

1

-

-

-

-

Skin (7)

-

Methyl tert-butyl ether

216-653-1

1634-04-4

183,5

50

-

367

100

-

-

-

Phosphorus pentachloride

233-060-3

10026-13-8

1

-

-

-

-

-

-

-

Pentane

203-692-4

109-66-0

3000

1000

-

-

-

-

-

-

Phenol

203-632-7

108-95-2

7,8

2

-

15,6

4

-

Skin (7)

-

Phosgene

200-870-3

75-44-5

0,08

0,02

-

0,4

0,1

-

-

-

Phosphine

232-260-8

7803-51-2

0,14

0,1

-

-

-

-

-

-

Metallic lead and its compounds

0,1

-

-

-

-

-

Defined lead metal (Pb) weight limit

-

o-toluidine

202-429-0

95-53-4

0,5

0,1

-

-

-

-

Skin (7)

-

Silica (respirable quartz dust)

-

-

0,1

-

-

-

-

-

-

-

Silica (respirable cristobalite dust)

-

-

0,05

-

-

-

-

-

-

-

Silica (respirable tridymite dust)

-

-

0,05

-

-

-

-

-

-

-

Styrene

202-851-5

100-42-5

100

23,3

-

200

46,6

-

Skin (7)

Noise (8)


-

Sulfotep

222-995-2

3689-24-5

0,1

-

-

-

-

-

Skin (7)

-

Hydrogen sulphide

231-977-3

7783-06-4

7

5

-

14

10

-

-

-

Tetrachloroethylene

204-825-9

127-18-4

138

20

-

275

40

-

Skin (7)

-

Tetrachloromethane

200-262-8

56-23-5

6,4

1

-

32

5

-

Skin (7)

-

Tetrahydrofuran

203-726-8

109-99-9

150

50

-

300

100

-

Skin (7)

-

Toluene

203-625-9

108-88-3

76,8

20

-

384

100

-

Skin (7)

-

Trichloroethylene

201-167-4

79-01-6

54,7

10

-

164,1

30

-

Skin (7)

1,2,4-trichlorobenzene

204-428-0

120-82-1

15,1

2

-

37,8

5

-

Skin (7)

-

1,1,1-trichloroethane

200-756-3

71-55-6

555

100

-

1110

200

-

-

-

Triethylamine

204-469-4

121-44-8

4,2

1

-

12,6

3

-

Skin (7)

-

Trimethylamine

200-875-0

75-50-3

4,9

2

-

12,5

5

-

-

Comes into force on 1 March 2022

1,2,3-trimethylbenzene

208-394-8

526-73-8

100

20

-

250

50

-

-

-

1,2,4-trimethylbenzene

202-436-9

95-63-6

100

20

-

250

50

-

-

-

1,3,5-trimethylbenzene (mesitylene)

203-604-4

108-67-8

100

20

-

250

50

-

-

-

m-xylene

203-576-3

108-38-3

221

50

-

442

100

-

Skin (7)

-

o-xylene

202-422-2

95-47-6

221

50

-

442

100

-

Skin (7)

-

p-xylene

203-396-5

106-42-3

221

50

-

442

100

-

Skin (7)

-

Xylene : mixture of isomers

215-535-7

1330-20-7

221

50

-

442

100

-

Skin (7)

-

(1) European Inventory of Existing Chemical Substances (EINECS).

(2) Chemical Abstract Service number (American Chemical Society).

(3) Measured or calculated in relation to an 8-hour reference period, time-weighted average.

(4) Limit value above which there must be no exposure and which relates to a period of fifteen minutes unless otherwise specified.

(5) mg/ m3: milligrams per cubic metre of air at 20°C and 101.3 kPa (760 mm of mercury).

(6) ppm: parts per million by volume in air (ml/m3).

(7) The mention skin accompanying the occupational exposure limit indicates the possibility of significant skin penetration.

(8) The mention noise accompanying the occupational exposure limit indicates the possibility of hearing damage in the event of co-exposure to noise.

(9) The substance may cause skin sensitisation.

(10) The substance may cause sensitisation of the respiratory tract.

(11) Inhalable fraction. Alveolar fraction if biological monitoring organised by the occupational physician ensures compliance with a maximum biological value of 2 μ g Cd/g creatinine in urine.

(12) If biological monitoring is set up, exposure is monitored using the biological monitoring values available and appropriate for this chemical agent.

Mariela Petrova

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Common Questions

Working with a corporate lawyer in France — Q&A

Any time a strategic decision changes how the company is owned, governed or contractually bound — incorporation, fundraising, M&A, restructuring, shareholder agreements, or major commercial contracts. Earlier engagement always costs less than later remediation.

A notary (notaire) is a public officer who authenticates specific deeds (mainly real-estate transfers and certain family-law acts). A corporate lawyer (avocat) advises on strategy, negotiates and drafts company documents, and represents you in disputes. The two roles complement rather than overlap.

Yes — most of our clients are foreign suppliers, investors or holding entities. We bridge the gap between French law and your home jurisdiction's expectations and deliver everything bilingually.

The SAS (Société par Actions Simplifiée) is the default choice for most international structures: flexible governance, single shareholder allowed, no minimum capital, and works cleanly with foreign holding entities. We assess SARL, SA, SCI on the merits when the situation calls for it.

Yes — communications with a French avocat are protected by the secret professionnel (Article 66-5 of the Law of 31 December 1971). This protection is broader than the common-law attorney-client privilege and applies to written and oral exchanges.

We work on fixed fees for clearly scoped engagements (incorporation, contract drafting, audits) and on monthly retainers for ongoing advisory. Hourly billing is the exception, not the default. You always know the cost before work starts.

Typical timeline is 2–3 weeks from KYC kick-off to RCS registration, assuming standard documentation. Holding-company structures, foreign-shareholder identification or in-kind contributions can extend this — we flag the gating items at the first meeting.

Absolutely. We routinely coordinate with your in-house counsel, expert-comptable or notaire — pragmatic collaboration is the norm, not the exception. We send them everything they need to do their part without duplicating work.

Mariela Petrova

Mariela Petrova

Avocate au Barreau de Paris

Toque #C2396

15+ Years In Corporate Practice

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