*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : VW0450000
CHEMICAL NAME : Silicon carbide
CAS REGISTRY NUMBER : 409-21-2
OTHER CAS REGISTRY NOS. : 12504-67-5
66039-27-8
LAST UPDATED : 199712
DATA ITEMS CITED : 30
MOLECULAR FORMULA : C-Si
MOLECULAR WEIGHT : 40.10
WISWESSER LINE NOTATION : .SI..C
COMPOUND DESCRIPTOR : Tumorigen
SYNONYMS/TRADE NAMES :
* Annanox CK
* Betarundum
* Betarundum ST-S
* Betarundum UF
* Betarundum ultrafine
* Carbofrax M
* Carbolon
* Carbon silicide
* Carborundeum
* Carborundum
* Crystar
* Crystolon 37
* Crystolon 39
* Densic C 500
* DU-A 1
* DU-A 2
* DU-A 3
* DU-A 4
* DU-A 3C
* GC 10000
* Green densic
* Green densic GC 800
* Hitaceram SC 101
* KZ 3M
* KZ 5M
* KZ 7M
* SC 9
* SC 9 (Carbide)
* SC 201
* SCW 1
* SD-GP 6000
* SD-GP 8000
* Silicon carbide
* Silicon monocarbide
* Silundum
* Tokawhisker
* UA 1
* UA 2
* UA 3
* UA 4
* UF 15
* YE 5626
*** HEALTH HAZARD DATA ***
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 60 mg/m3/6H/13W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - changes in lung weight
REFERENCE :
FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year:
16,128,1991
** TUMORIGENIC DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 300 mg/kg/26W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Gastrointestinal - tumors
REFERENCE :
EKSODD Eksperimental'naya Onkologiya. Experimental Oncology. (V/O
Mezhdunarodnaya Kniga, 113095 Mosow, USSR) V.1- 1979-
Volume(issue)/page/year: 11(2),13,1989
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Implant
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 200 mg/kg
TOXIC EFFECTS :
Tumorigenic - neoplastic by RTECS criteria
Tumorigenic - tumors at site of application
REFERENCE :
JJIND8 JNCI, Journal of the National Cancer Institute. (Washington, DC)
V.61-79, 1978-87. For publisher information, see JNCIEQ.
Volume(issue)/page/year: 67,965,1981
*** 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 10 mg/m3, total 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
*** U.S. STANDARDS AND REGULATIONS ***
MSHA STANDARD:NUISANCE PARTICULATES
DTLWS* "Documentation of the Threshold Limit Values for Substances in
Workroom Air," Supplements. For publisher information, see 85INA8.
Volume(issue)/page/year: 3,28,1973
OSHA PEL (Gen Indu):8H TWA 15 mg/m3, total dust
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 (Gen Indu):8H TWA 5 mg/m3, respirable fraction
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 15 mg/m3, total dust
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 (Construc):8H TWA 5 mg/m3, respirable fraction
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 15 mg/m3, total dust
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 (Shipyard):8H TWA 5 mg/m3, respirable fraction
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-AUSTRALIA:TWA 10 mg/m3 JAN 1993
OEL-BELGIUM:TWA 10 mg/m3 JAN 1993
OEL-FRANCE:TWA 10 mg/m3 JAN 1993
OEL-GERMANY:TWA 4 mg/m3 JAN 1993
OEL-THE NETHERLANDS:TWA 10 mg/m3 JAN 1993
OEL-SWITZERLAND:TWA 4 mg/m3 JAN 1993
OEL-UNITED KINGDOM:TWA 10 mg/m3 (total dust) JAN 1993
OEL-UNITED KINGDOM:TWA 5 mg/m3 (resp. 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 SILICON CARBIDE, resp. fraction-air:10H TWA 5 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 RECOMMENDED EXPOSURE LEVEL (REL) :
NIOSH REL TO SILICON CARBIDE, total dust-air:10H TWA 10 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 :
NOHS - National Occupational Hazard Survey (1974)
NOHS Hazard Code - 17525
No. of Facilities: 25235 (estimated)
No. of Industries: 184
No. of Occupations: 97
No. of Employees: 268082 (estimated)
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X4228
No. of Facilities: 158 (estimated)
No. of Industries: 4
No. of Occupations: 12
No. of Employees: 8693 (estimated)
No. of Female Employees: 84 (estimated)
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X6494
No. of Facilities: 1250 (estimated)
No. of Industries: 25
No. of Occupations: 22
No. of Employees: 17481 (estimated)
No. of Female Employees: 1482 (estimated)
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - 17525
No. of Facilities: 13729 (estimated)
No. of Industries: 129
No. of Occupations: 97
No. of Employees: 250945 (estimated)
No. of Female Employees: 19568 (estimated)
*** STATUS IN U.S. ***
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
*** END OF RECORD ***