74-89-5

Methylamine

5

ppm

Eye, Skin, and Upper Respiratory Tract Irritation

71-55-6

Methylchloroform

350

ppm

Central Nervous System Impairment; liver Damage

A4

25639-42-3

Methylcyclohexanol

50

ppm

583-60-8; 591-24-2; 589-92-4; 1331-22-2

Methylcyclohexanone, all isomers

20

ppm

Liver efects, CNS impairment

5124-30-1

Methylene bis( 4-cyclohexylisocyanate)

0.005

ppm

Resp Sensitization; Lower Respiratory Tract Irritation

5124-30-1

Methylene bis( 4-cyclohexylisocyanate)

0.01

ppm

101-68-8

Methylene Bisphenyl Isocyanate (MDI)

0.005

ppm

Resp Sensitization

101-68-8

Methylene Bisphenyl Isocyanate (MDI)

0.02

ppm

3425-89-6; 5333-84-6; 11070-44-3; 19438-63-2; 19438-64-3; 26590-20-5; 42498-58-8

Methyltetrahydrophthalic Anhydride Isomers

0.07

ppb

DSEN RSEN

21087-64-9

Metribuzin

1

mg/m3

Liver effects decrease body weight

A4

7786-34-7

Mevinphos

0.01

ppm

7786-34-7

Mevinphos

0.01

mg/m3

Cholinesterase Inhibition

A4

12001-26-2

Mica

0.1

mg/m3

Pneumoconiosis

Mineral oil, Pure, highly and severely refined

5

mg/m3

A4

7439-98-7

Molybdenum

10

mg/m3

Lower Respiratory Tract Irritation

7439-98-7

Molybdenum

10

mg/m3

7440-02-0

Nickel, insoluble inorganic (NOS)

0.2

mg/m3

Lung cancer

A1

7440-02-0

Nickel, soluble inorganic

0.1

mg/m3

Lung Damage; nasal cancer

A4

54-11-5

Nicotine

0.5

mg/m3

1929-82-4

Nitrapyrin

5

mg/m3

1929-82-4

Nitrapyrin

10

mg/m3

Liver Damage

A4

7697-37-2

Nitric acid

2

ppm

10102-43-9

Nitric oxide

25

ppm

98-95-3

Nitrobenzene

1

ppm

7439-98-7

Molybdenum

3

mg/m3

Lower Respiratory Tract Irritation

7439-98-7

Molybdenum Soluble Compounds, as Mo

0.5

mg/m3

Lower Respiratory Tract Irritation

A3

79-11-8

Monochloroacetic acid

0.5

ppm

Upper Respiratory Tract

A4

6923-22-4

Monocrotophos

0.05

mg/m3

Cholinesterase Inhibition

A4

123-39-7

Monomethylformamide

1

ppm

110-91-8

Morpholine

20

ppm

108-45-2

m-Phenylenediamine

0.1

mg/m3

Liver Damage; Skin Irritation

A4

626-17-5

m-Phthalodinitrile

5

mg/m3

108-44-1

m-Toluidine

2

ppm

1477-55-0

m-Xylene a,a'-diamine

0.018

ppm

Eye, Skin, and Gastrointestinal Irritation

3710-84-7

N,N-Diethylhydroxylamine

2

ppm

Upper Respiratory Tract Irritation

127-19-5

N,N-Dimethyl acetamide

10

ppm

300-76-5

Naled

0.1

mg/m3

Cholinesterase Inhibition

Dermal

A4

628-63-7

n-Amyl acetate

50

ppm

91-20-3

Naphthalene

10

ppm

91-20-3

Naphthalene

10

ppm

4/6/9006

Natural rubber latex, as inhalable allergenic proteins

0.0001

mg/m3

Resp Sensitization

Dermal; Respiratory

123-86-4; 110-19-0;105-46-4;540-88-5

n-Butyl acetate

50

ppm

Eye and upper respiratory tract irritation

141-32-2

n-Butyl acrylate

2

ppm

Irritation

DSEN

A4

8/6/2426

n-Butyl glycidyl ether

3

ppm

Reproductive duction; Sensitization

DSEN

138-22-7

n-Butyl lactate

5

ppm

109-79-5

n-Butyl mercaptan

0.5

ppm

109-73-9

n-Butylamine

5

ppm

100-74-3

N-Ethylmorpholine

5

ppm

110-54-3

n-Hexane

50

ppm

13463-39-3

Nickel carbonyl, as Ni

0.001

ppm

12035-72-2

Nickel subsulfide, as Ni

0.1

mg/m3

Lung cancer

A1

7440-02-0

Nickel, elemental

1.5

mg/m3

Dermatitis; pneumoconiosis

A5

79-24-3

Nitroethane

100

ppm

10102-44-0

Nitrogen dioxide

0.2

ppm

Lower Respiratory Tract Irritation

A4

7783-54-2

Nitrogen trifluoride

10

ppm

55-63-0

Nitroglycerin

0.05

ppm

Vasodilation

75-52-5

Nitromethane

20

ppm

Thyroid Effects; Upper Respiratory Tract Irritation; lung Damage

A3

88-72-2; 99-08-1; 99-99-0

Nitrotoluene, all isomers

2

ppm

10024-97-2

Nitrous oxide

50

ppm

768-52-5

N-lsopropylaniline

2

ppm

100-61-8

N-Methyl aniline

0.5

ppm

62-75-9

N-Nitrosodimethylamine

A3

111-84-2

Nonane

200

ppm

135-88-6

N-Phenyl-b-naphthylamine

Cancer

A4

71-23-8

n-Propanol (n-Propyl alcohol)

100

ppm

Eye and Upper Respiratorytt Tract Irritation

A4

627-13-4

n-Propyl nitrate

5

ppm

Anemia, Methemoglobinemia

110-62-3

n-Valeraldehyde

50

ppm

88-12-0

N-Vinyl-2-pyrrolidone

0.05

ppm

Liver Damage

A3

90-04-0

o-Anisidine

0.5

mg/m3

Methemoglobinemia

A3

2698-41-1

o-Chlorobenzylidene malononitrile

0.05

ppm

Upper Respiratory Tract Irritation; Skin Sensitization

A4

2039-87-4

o-Chlorostyrene

50

ppm

95-49-8

o-Chlorotoluene

50

ppm

2234-13-1

Octachloronaphthalene

0.1

mg/m3

111-65-9; 540-84-1

Octane

300

ppm

Upper Respiratory Tract Irritation

95-54-5

o-Phenylenediamine

0.1

mg/m3

Anemia

A3

643-79-8

o-phthalaldehyde

0.1

ppb

DSEN RSEN

91-15-6

o-Phthalodinitrile

1

mg/m3

Central Nervous System Convulsion; body weight Effect

89-72-5

o-sec-Butylphenol

5

ppm

20816-12-0

Osmium tetroxide, as Os

0.0002

ppm

119-93-7

o-Tolidine

Eye, bladder, and kidney Irritation; bladder cancer; Methemoglobinemia

A3

95-53-4

o-Toluidine

2

ppm

144-62-7

Oxalic acid, anhydrous

1

mg/m3

6153-56-6

Oxalic acid, dihydrate

7783-41-7

Oxygen difiuoride

0.05

ppm

7783-41-7

Oxygen difiuoride

0.05

ppm

10028-15-6

Ozone

0.08

ppm

Pulmonary Function

A4

10028-15-6

Ozone

0.1

ppm

Pulmonary Function

A4

10028-15-6

Ozone

0.05

ppm

Pulmonary Function

A4

10028-15-6

Ozone

0.2

ppm

Pulmonary Function

A4

80-51-3

p,p'-Oxybis(benzenesulfonyl hydrazide)

0.1

mg/m3

Teratogenic Effect

104-94-9

p-Anisidine

0.5

mg/m3

Methemoglobinemia

A4

8002-74-2

Paraffin wax fume

2

mg/m3

4685-14-7; 2074-50-2; 1910-42-5

Paraquat

0.05

mg/m3

A4

56-38-2

Parathion

0.05

mg/m3

Cholinesterase inhibition

A#

Particles Not Otherwise Specified

10

mg/m3

Particles Not Otherwise Specified

3

mg/m3

19624-22-7

Pentaborane

0.005

0.01

ppm

CNS toxicity

1321-64-8

Pentachloronaphthalene

0.5

mg/m3

Liver Damage; chloracne

82-68-8

Pentachloronitrobenzene

0.5

mg/m3

Liver Damage

A4

87-86-5

Pentachlorophenol

0.5

mg/m3

Upper Respiratory Tract and Eye Irritation; Central Nervous System and Cardiac Impairment

A3