Silicon tetrahydride

MOLECULAR FORMULA :

H4-Si

MOLECULAR WEIGHT :

32.13

WISWESSER LINE NOTATION :

SI H4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

9600 ppm/4H

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 - mouse

DOSE/DURATION :

9600 ppm/4H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :

Mutation in microorganisms

TEST SYSTEM :

Bacteria - Salmonella typhimurium

REFERENCE :

MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 307,335,1994 *** REVIEWS *** ACGIH TLV-TWA 6.6 mg/m3 (5 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 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 ppm (7 mg/m3) JAN 1993 OEL-BELGIUM:TWA 5 ppm (6.6 mg/m3) JAN 1993 OEL-DENMARK:TWA 0.5 ppm (0.7 mg/m3) JAN 1993 OEL-FINLAND:TWA 0.5 ppm (0.7 mg/m3);STEL 1.5 ppm (2.0 mg/m3) JAN 1993 OEL-FRANCE:TWA 5 ppm (7 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 0.5 ppm (0.7 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 0.5 ppm (0.7 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 0.5 ppm (0.7 mg/m3);STEL 1 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 SILICON TETRAHYDRIDE-air:10H TWA 5 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 - 83770 No. of Facilities: 1732 (estimated) No. of Industries: 44 No. of Occupations: 41 No. of Employees: 33190 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 83770 No. of Facilities: 510 (estimated) No. of Industries: 11 No. of Occupations: 17 No. of Employees: 25354 (estimated) No. of Female Employees: 2999 (estimated)