Methyl methacrylate

DATA ITEMS CITED :

102

MOLECULAR FORMULA :

C5-H8-O2

MOLECULAR WEIGHT :

100.13

WISWESSER LINE NOTATION :

1UY1&VO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

Open irritation test

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

TYPE OF TEST :

Standard Draize test

ROUTE OF EXPOSURE :

Administration into the eye

SPECIES OBSERVED :

Rodent - rabbit

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Human

DOSE/DURATION :

125 ppm

TOXIC EFFECTS :

Behavioral - sleep Behavioral - excitement Behavioral - anorexia (human)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Human

DOSE/DURATION :

60 mg/m3

TOXIC EFFECTS :

Behavioral - sleep Behavioral - excitement Vascular - BP lowering not characterized in autonomic section

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

7872 mg/kg

TOXIC EFFECTS :

Behavioral - muscle weakness Behavioral - coma Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

78000 mg/m3/4H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

1328 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

7088 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

3625 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

18500 mg/m3/2H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

945 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

5954 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

4725 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity) Behavioral - ataxia Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

41200 mg/m3/3H

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity) Behavioral - ataxia Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

4252 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

120 uL/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Mammal - cat

DOSE/DURATION :

7 mL/kg

TOXIC EFFECTS :

Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Kidney, Ureter, Bladder - changes primarily in glomeruli Biochemical - Metabolism (Intermediary) - porphyrin including bile pigments

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

8700 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

17500 mg/m3/4.5H

TOXIC EFFECTS :

Behavioral - muscle weakness Behavioral - coma Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

>5 gm/kg

TOXIC EFFECTS :

Skin and Appendages - dermatitis, other (after systemic exposure)

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

14 mL/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - other changes Kidney, Ureter, Bladder - hematuria

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

5954 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity) Behavioral - ataxia Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

19000 mg/m3/5H

TOXIC EFFECTS :

Behavioral - muscle weakness Behavioral - coma Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

1890 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

5954 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - species unspecified

DOSE/DURATION :

20 gm/m3

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

10500 mg/kg/21D-I

TOXIC EFFECTS :

Peripheral Nerve and Sensation - structural change in nerve or sheath Behavioral - somnolence (general depressed activity) Biochemical - Metabolism (Intermediary) - lipids including transport

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

17896 mg/kg/35W-I

TOXIC EFFECTS :

Gastrointestinal - ulceration or bleeding from stomach Liver - other changes

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

116 ppm/8H/26W-I

TOXIC EFFECTS :

Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Nutritional and Gross Metabolic - changes in phosphorus Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

5000 ppm/6H/14W-I

TOXIC EFFECTS :

Brain and Coverings - changes in circulation (hemorrhage, thrombosis, etc.) Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

34500 mg/m3/16W-I

TOXIC EFFECTS :

Liver - fatty liver degeneration Kidney, Ureter, Bladder - other changes Biochemical - Metabolism (Intermediary) - amino acids (including renal excretion)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

1 mg/m3/24H/60D-C

TOXIC EFFECTS :

Behavioral - muscle contraction or spasticity Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase Biochemical - Metabolism (Intermediary) - porphyrin including bile pigments

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

115 mg/m3/3H/17W-I

TOXIC EFFECTS :

Cardiac - EKG changes not diagnostic of specified effects Blood - other changes

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

500 ppm/6H/2Y-I

TOXIC EFFECTS :

Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

41 gm/m3/90M/15D-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

5000 ppm/6H/14W-I

TOXIC EFFECTS :

Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Liver - hepatitis (hepatocellular necrosis), zonal Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

500 ppm/6H/2Y-I

TOXIC EFFECTS :

Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

19665 mL/kg/15W-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

1825 mg/kg/2Y-C

TOXIC EFFECTS :

Endocrine - changes in spleen weight

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

47 gm/m3/90M/15D-I

TOXIC EFFECTS :

Liver - fatty liver degeneration Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - cat

DOSE/DURATION :

15 gm/m3/7H/5D-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

97500 ug/kg/39W-I

TOXIC EFFECTS :

Brain and Coverings - other degenerative changes Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

15 gm/m3/7H/5D-I

TOXIC EFFECTS :

Kidney, Ureter, Bladder - other changes in urine composition Biochemical - Metabolism (Intermediary) - porphyrin including bile pigments

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

65 gm/m3/3H/3D-I

TOXIC EFFECTS :

Liver - fatty liver degeneration Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - hamster

DOSE/DURATION :

400 ppm/6H/78W-I

TOXIC EFFECTS :

Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Implant

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

1620 mg/kg

TOXIC EFFECTS :

Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

10 mg/m3

SEX/DURATION :

female 9 year(s) after conception

TOXIC EFFECTS :

Reproductive - Maternal Effects - other effects Reproductive - Effects on Embryo or Fetus - extra-embryonic structures (e.g., placenta, umbilical cord) Reproductive - Effects on Newborn - delayed effects

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

109 gm/m3/17M

SEX/DURATION :

female 6-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

109 gm/m3/54M

SEX/DURATION :

female 6-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

54 mg/m3/24H

SEX/DURATION :

female 8 week(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - menstrual cycle changes or disorders

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

4480 mg/m3/2H

SEX/DURATION :

female 6-18 day(s) after conception

TOXIC EFFECTS :

Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

405 mg/kg

SEX/DURATION :

female 5-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

801 mg/kg

SEX/DURATION :

female 5-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

TYPE OF TEST :

Cytogenetic analysis

MUTATION DATA

TYPE OF TEST :

Sister chromatid exchange

TEST SYSTEM :

Rodent - hamster Ovary

REFERENCE :

NTPTR* National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No.206- Volume(issue)/page/year: NTP-TR-314,1986 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 410 mg/m3 (100 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 19,187,1979 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 19,187,1979 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,445,1994 IARC Cancer Review:Animal LACK CARCINOGENICITY IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,445,1994 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 60,445,1994 TOXICOLOGY REVIEW EVHPAZ EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- 1972- Volume(issue)/page/year: 11,141,1975 TOXICOLOGY REVIEW CMTVAS Cahiers de Medecine du Travail. (Association Professionnelle Belge des Medecine du Travail, rue du Bultia, 6280 Gerpinnes, Belgium) V.1- 1963- Volume(issue)/page/year: 10(3),49,1973 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 100 ppm (410 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,168,1971 OSHA PEL (Gen Indu):8H TWA 100 ppm (410 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 100 ppm (410 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 100 ppm (410 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 100 ppm (410 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 100 ppm (410 mg/m3) JAN 1993 OEL-BELGIUM:TWA 100 ppm (410 mg/m3) JAN 1993 OEL-DENMARK:TWA 75 ppm (307 mg/m3) JAN 1993 OEL-FINLAND:TWA 100 ppm (410 mg/m3);STEL 150 ppm (615 mg/m3) JAN 1993 OEL-FRANCE:TWA 100 ppm (410 mg/m3);STEL 200 ppm (820 mg/m3) JAN 1993 OEL-GERMANY:TWA 50 ppm (210 mg/m3) JAN 1993 OEL-HUNGARY:TWA 50 mg/m3;STEL 150 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 100 ppm (410 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 100 ppm (410 mg/m3) JAN 1993 OEL-POLAND:TWA 50 mg/m3 JAN 1993 OEL-RUSSIA:STEL 10 mg/m3 JAN 1993 OEL-SWEDEN:TWA 50 ppm (200 mg/m3);STEL 150 ppm (600 mg/m3);Skin JAN 1993 OEL-SWITZERLAND:TWA 50 ppm (210 mg/m3);STEL 100 ppm (420 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 100 ppm (410 mg/m3);STEL 125 ppm JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO METHYL METHACRYLATE-air:10H TWA 100 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 47700 No. of Facilities: 11522 (estimated) No. of Industries: 89 No. of Occupations: 73 No. of Employees: 89435 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 47700 No. of Facilities: 6757 (estimated) No. of Industries: 76 No. of Occupations: 80 No. of Employees: 170079 (estimated) No. of Female Employees: 59519 (estimated)