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DME OELs:

DME OELs 2006

M

SUBSTANCE

FORMULA

CAS
Numbers

OEL

OEL-STEL/ OEL-C

Notes

ppm

mg/m³

ppm

mg/m³

*MBOCA

CH₂(C₆H₄ClNH₂)₂

101-14-4

see *4,4’-Methylenebis-(2-chloroaniline)

*MDA

CH₂(C₆H₄NH₂)₂

101-77-9

see *4,4’Methylene dianiline

*MDI

CH₂(C₆H₄NCO)₂

101-68-8

see *Isocyanates

Magnesite

MgCO₃

546-93-0

-

   inhalable particulate

-

10

-

-

-

   respirable particulate

-

5

-

-

-

Magnesium oxide [as Mg]

MgO

1309-48-4

-

   inhalable particulate

-

10

-

-

-

   fume and respirable particulate

-

5

-

10

-

Malathion

C₁₀H₁₉O₆PS₂

121-75-5

-

10

-

-

Sk

Maleic anhydride

C₄H₂O₃

108-31-6

0,25

1

-

-

-

Manganese, elemental, and inorganic compounds [as Mn]

Mn

7439-96-5
(metal)

-

1

-

-

[06]

Manganese, fume [as Mn]

Mn

7439-96-5

-

1

-

3

-

Manganese cyclopentadienyl tricarbonyl [as Mn]

C₅H₅Mn(CO)₃

12079-65-1

-

0,1

-

0,3

Sk

Manganese tetroxide

Mn₃O₄

1317-35-7

-

1

-

-

-

Man made mineral fibres [Glass, slag and rock wool fibres]

-

-

-

2 f/ml

-

-

-

Marble

CaCO₃

1317-65-3

see Calcium carbonate

Mequinol [INN]

CH₃OC₆H₄OH

150-76-5

-

5

-

-

-

Mercaptoacetic acid

HSCH₂COOH

68-11-1

see Thioglycolic acid

Mercury alkyls [as Hg]

-

-

-

0,01

-

0,03

Sk

Mercury and compounds, except Mercury alkyls, [as Hg]

Hg

7439-97-6

-

0,025

-

-

Mesityl oxide

(CH₃)₂C=CHCOCH₃

141-79-7

15

60

25

100

-

Methacrylic acid

CH₂=C(CH₃)COOH

79-41-4

20

70

40

140

-

Methacrylonitrile

CH₂=C(CH₃)CN

126-98-7

1

3

-

-

Sk

Methane

CH₄

74-82-8

-

-

C 1,4%

-

Note [f]

Methanethiol

CH₃SH

74-93-1

see Methyl mercaptan

Methanol

CH₃OH

67-56-1

200

260

250

310

Sk

Methomyl

C₅H₁₀N₂O₂S

16752-77-5

-

2,5

-

-

-

Methoxychlor

(C₆H₄OCH₃)₂CHCCl₃

72-43-5

-

10

-

-

-

*2-Methoxyethanol [EGME]

CH₃OCH₂CH₂OH

109-86-4

5

16

-

-

Sk

*2-Methoxyethyl acetate [EGMEA]

CH₃COOCH₂CH₂OCH₃

110-49-6

5

24

-

-

Sk

1-Methoxypropan-2-ol

CH₃CHOHCH₂OCH₃

107-98-2

see Propylene glycol monomethyl ether

Methyl acetate

CH₃COOCH₃

79-20-9

200

610

250

760

-

Methyl acrylate

CH₂=CHCOOCH₃

96-33-3

10

35

-

-

-

Methylal

CH₂(OCH₃)₂

109-87-5

1000

3100

1250

3880

-

Methyl alcohol

CH₃OH

67-56-1

see Methanol

Methylamine

CH₃NH₂

74-89-5

10

12

-

-

-

Methyl n-amyl ketone

CH₃CO(CH₂)₄CH₃

110-43-0

50

240

100

480

Sk

N-Methylaniline

C₆H₅NHCH₃

100-61-8

0,5

2

-

-

Sk

Methyl bromide

CH₃Br

74-83-9

5

20

15

60

Sk

3-Methylbutan-1-ol

(CH₃)₂CHCH₂CH₂OH

123-51-3

see Isoamyl alcohol

1-Methylbutyl acetate

CH₃COOCH(CH₃)C₃H₇

626-38-0

see sec-Amyl acetate

Methyl-n-butyl ketone

CH₃CO(CH₂)₃CH₃

591-78-6

5

20

-

-

Sk

Methyl chloride

CH₃Cl

74-87-3

50

105

100

210

-

*Methyl chloroform

CH₃CCl₃

71-55-6

100

542

200

1085

[06]

Methyl 2-cyanoacrylate

CH₂=C(CN)COOCH₃

137-05-3

2

8

4

16

-

Methylcyclohexane

CH₃C₆H₁₁

108-87-2

400

1600

500

2000

-

Methylcyclohexanol

CH₃C₆H₁₀OH

25639-42-3

50

235

75

350

-

2-Methylcyclohexanone

CH₃CHCO(CH₂)₃CH₂

583-60-8

50

230

75

345

Sk

Methylcyclopentadienyl, Manganese tricarbonyl [as Mn]

CH₃C₅H₄Mn(CO)₃

12108-13-3

-

0,2

-

0,6

Sk

2-Methyl-4,6-dinitrophenol

CH₃C₆H₂(OH)(NO₂)₂

534-52-1

see Dinitro-o-cresol

*4,4’-Methylenebis(2-chloroaniline) [MBOCA]

CH₂(C₆H₄ClNH₂)₂

101-14-4

-

0,005

-

-

Sk

*Methylene chloride

CH₂Cl₂

75-09-2

50

175

250

780

[06]

*4,4’-Methylenedianiline [MDA]

CH₂(C₆H₄NH₂)₂

101-77-9

0,01

0,08

-

-

-

*4,4’-Methylene-diphenyl diisocyanate [MDI]

CH₂(C₆H₄NCO)₂

101-68-8

see *Isocyanates

Methyl ethyl ketone [MEK]

CH₃COCH₂CH₃

78-93-3

200

600

300

900

Sk

Methyl ethyl ketone peroxides [MEKP]

C₈H₁₆O₄ or C₈H₁₈O₆

1338-23-4

-

-

C 0,2

C 1,5

[06]

Methyl formate

HCOOCH₃

107-31-3

100

250

150

375

-

5-Methylheptan-3-one

C₈H₁₆O

541-85-5

see Ethyl amyl ketone

5-Methylhexan-2-one

CH₃COCH₂CH₂CH(CH₃)₂

110-12-3

see Methyl isoamyl ketone

Methyl iodide

CH₃I

74-88-4

2

11

5

28

Sk [06]

Methyl isoamyl ketone

CH₃COCH₂CH₂CH(CH₃)₂

110-12-3

50

240

75

360

Sk

Methyl isobutyl carbinol

(CH₃)₂CHCH₂CH(OH)CH₃

108-11-2

25

100

40

160

Sk

Methyl isobutyl ketone [MIBK]

CH₃COCH₂CH(CH₃)₂

108-10-1

20

82

50

205

Sk [06]

*Methyl isocyanate

CH₃NCO

624-83-9

see *Isocyanates

Methyl mercaptan

CH₃SH

74-93-1

0,5

1

-

-

-

Methyl methacrylate

CH₂=C(CH₃)COOCH₃

80-62-6

50

205

100

410

-

Methyl parathion

C₈H₁₀NO₅PS

298-00-0

-

0,2

-

0,6

Sk

2-Methylpentane-2,4-diol

(CH₃)₂COHCH₂CHOHCH₃

107-41-5

see Hexylene glycol

4-Methylpentan-2-ol

(CH₃)₂CHCH₂CH(OH)CH₃

108-11-2

see Methyl isobutyl carbinol

4-Methylpentan-2-one

CH₃COCH₂CH(CH₃)₂

108-10-1

see Methyl isobutyl ketone

4-Methyl-3-penten-2-one

(CH₃)₂C=CHCOCH₃

141-79-7

see Mesityl oxide

*4-Methyl-m-phenylene diisocyanate

CH₃C₆H₃(NCO)₂

584-84-9

see *Isocyanates

2-Methylpropan-1-ol

(CH₃)₂CHCH₂OH

78-83-1

see Isobutyl alcohol

2-Methylpropan-2-ol

(CH₃)₃COH

75-65-0

see tert-Butyl alcohol

Methyl propyl ketone

CH₃COCH₂CH₂CH₃

107-87-9

200

700

250

875

-

1-Methyl-2-pyrrolidone

CH₃N(CH₂)₃CO

872-50-4

25

100

-

-

[06]

Methyl silicate

(CH₃O)₄Si

681-84-5

1

6

5

30

-

alpha-Methyl styrene

C₆H₅C(CH₃)=CH₂

98-83-9

50

240

100

480

-

Methylstyrenes

CH₃C₆H₄CH=CH₂

25013-15-4

see Vinyl toluenes, all isomers

N-Methyl-N-2,4,6-tetranitroaniline

(NO₂)₃C₆H₂N(NO₂)CH₃

479-45-8

see Tetryl

Mevinphos

C₇H₁₃PO₆

7786-34-7

0,01

0,1

0,03

0,3

Sk

Mica

-

12001-26-2

-

   inhalable particulate

-

10

-

-

-

   respirable particulate

-

1

-

-

-

Molybdenum compounds [as Mo]

Mo

7439-98-7
(metal)

-

   soluble compounds

-

5

-

10

-

   insoluble compounds

-

10

-

20

-

Monochloroacetic acid

ClCH₂CO₂H

79-11-8

0,3

1

-

-

Sk

Morpholine

C₄H₉NO

110-91-8

20

70

30

105

Sk