disilicic acid

MOLECULAR FORMULA :

O2-Si

MOLECULAR WEIGHT :

60.09

WISWESSER LINE NOTATION :

SI O2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Human

DOSE/DURATION :

16 mppcf/8H/17.9Y-I

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis) Lungs, Thorax, or Respiration - cough Lungs, Thorax, or Respiration - dyspnea

REFERENCE :

NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: PB246-697

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intratracheal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

200 mg/kg

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)

REFERENCE :

BJIMAG British Journal of Industrial Medicine. (British Medical Journal, Box 560B, Kennebunkport, ME 04046) V.1- 1944- Volume(issue)/page/year: 10,9,1953 ** TUMORIGENIC DATA **

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intrapleural

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

90 mg/kg

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Blood - lymphoma, including Hodgkin's disease

REFERENCE :

JNCIAM Journal of the National Cancer Institute. (Washington, DC) V.1-60, 1940-78. For publisher information, see JJIND8. Volume(issue)/page/year: 57,509,1976

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Intrapleural

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 mg/kg

REFERENCE :

BJCAAI British Journal of Cancer. (Macmillan Press Ltd., Houndmills, Basingstoke, Hants. RG21 2XS, UK) V.1- 1947- Volume(issue)/page/year: 41,908,1980 *** REVIEWS *** ACGIH TLV-TWA 0.05 mg/m3, respirable dust 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 Sufficient 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: 42,39,1987 IARC Cancer Revew:Animal Sufficient 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: 68,41,1997 IARC Cancer Review:Human Limited 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: 42,39,1987 IARC Cancer Revew:Human Sufficient 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: 68,41,1997 IARC Cancer Revew:Group 1 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: 68,41,1997 TOXICOLOGY REVIEW ANAEA3 Annals of Allergy. (American College of Allergists, POB 20671, Bloomington, MN 55420) V.1- 1943- Volume(issue)/page/year: 35,165,1975 TOXICOLOGY REVIEW 31BYAP "Experimental Lung Cancer: Carcinogenesis and Bioassays, International Symposium, 1974," Karbe, E., and J.F. Park, eds., Springer-Verlag New York, Inc., 1974 Volume(issue)/page/year: -,93,1974 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-respirable dust in air:TWA 10 mg/m3/2(% resp. SiO2+2) DTLWS* "Documentation of the Threshold Limit Values for Substances in Workroom Air," Supplements. For publisher information, see 85INA8. Volume(issue)/page/year: 3,33,1973 MSHA STANDARD-total dust in air:TWA 30 mg/m3/2(% SiO2+3) DTLWS* "Documentation of the Threshold Limit Values for Substances in Workroom Air," Supplements. For publisher information, see 85INA8. Volume(issue)/page/year: 3,33,1973 OSHA PEL (Gen Indu):8H TWA 5 mg/m3/(% resp SiO2+2) 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 5 mg/m3/(% resp SiO2+2) 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 20 mppcf/(%SiO2+5) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-BELGIUM:TWA 0.05 mg/m3 JAN 1993 OEL-DENMARK:TWA 0.05 mg/m3 JAN 1993 OEL-DENMARK:TWA 0.15 mg/m3 (total dust) JAN 1993 OEL-FINLAND:TWA 0.1 mg/m3 JAN 1993 OEL-GERMANY:TWA 0.15 mg/m3 JAN 1993 OEL-RUSSIA:STEL 1 mg/m3 (total dust) JAN 1993 OEL-SWEDEN:TWA 0.05 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 0.15 mg/m3 JAN 1993 OEL-THAILAND:TWA 10 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.05 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.15 mg/m3 (total dust) 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 SILICA, cryst. cristobalite-air:10H CA TWA 0.05 mg/m3 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 : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T0624 No. of Facilities: 2072 (estimated) No. of Industries: 33 No. of Occupations: 43 No. of Employees: 31369 (estimated) No. of Female Employees: 2228 (estimated)