Silicon carbide

RTECS #

VW0450000

CAS #

409-21-2; 12504-67-5; 66039-27-8
See: NMAM or OSHA Methods

Updated

September 2013

Molecular Weight

40.10

Molecular Formula

CSi

Synonyms

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 3C
DU-A 4
GC 10000
Green densic
Green densic GC 800
Hitaceram SC 101
KZ 3M
KZ 5M
KZ 7M
SC 201
SC 9
SC 9 (Carbide)
SCW 1
SD-GP 6000
SD-GP 8000
Silicon carbide (ACGIH:OSHA)
Silicon monocarbide
Silundum
Tokawhisker
UA 1
UA 2
UA 3
UA 4
UF 15
YE 5626

Tumorigenic Data and References

Route/Organism	Dose	Effect	Reference
implant/rat	lowest published toxic dose: 200 mg/kg	Tumorigenic: Neoplastic by RTECS criteria Tumorigenic: Tumors at site of application	JJIND8 67,965,1981
intraperitoneal/rat	lowest published toxic dose: 300 mg/kg/26W- intermittent	Tumorigenic: Equivocal tumorigenic agent by RTECS criteria Gastrointestinal: Tumors	EKSODD 11(2),13,1989

Acute Toxicity Data and References

Route/Organism	Dose	Effect	Reference
intratracheal/rat	lowest published toxic dose: 250 mg/kg	Lung, Thorax, or Respiration: Other changes Lung, Thorax, or Respiration: Fibrosis (interstitial)	VCVN1* -,357,1988
intratracheal/rat	lowest published toxic dose: 8 mg/kg	Lung, Thorax, or Respiration: Other changes Biochemical: Metabolism (intermediary): Other proteins	TOLED5 145,273,2003

Other Multiple Dose Data and References

Route/Organism	Dose	Effect	Reference
inhalation/rat	lowest published toxic concentration: 60 mg/m³/6H/13W- intermittent	Lung, Thorax, or Respiration: Changes in lung weight	FAATDF 16,128,1991

Reviews

Organization	Standard	Reference
American Conference of Governmental Industrial Hygienists (ACGIH)	Threshold Limit Value-time-weighted average 0.1 f/cubic centimeter (resp)	DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)	Threshold Limit Value-time-weighted average 10 mg/m³ (inhal); 3 mg/m³ (resp)	DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)	Threshold Limit Value-Suspected human carcinogen	DTLVS* TLV/BEI,2013

Standards and Regulations

Organization	Standard	Reference
Mine Safety and Health Administration (MSHA) STANDARD	NUISANCE PARTICULATES	DTLWS* 3,28,1973
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRIA	MAK-TMW 5 mg/m³;KZW 10 mg/m³, resp, 2007
Occupational Exposure Limit-BELGIUM	time-weighted average 10 mg/m³, MAR2002
Occupational Exposure Limit-FRANCE	VME 10 mg/m³, FEB2006
Occupational Exposure Limit-GERMANY	MAK 1.5 mg/m³, resp, 2011
Occupational Exposure Limit-KOREA	time-weighted average 10 mg/m³, 2006
Occupational Exposure Limit-MEXICO	time-weighted average 10 mg/m³;short term exposure limit 20 mg/m³ (inhalable), 2004
Occupational Exposure Limit-NEW ZEALAND	time-weighted average 10 mg/m³ (inspirable dust), JAN2002
Occupational Exposure Limit-PERU	time-weighted average 10 mg/m³ (inhal), 3 mg/m³ (resp), JUL2005
Occupational Exposure Limit-RUSSIA	time-weighted average 6 mg/m³, JUN2003
Occupational Exposure Limit-SWEDEN	time-weighted average 0.2 f/cc, Carcinogen, JUN2005
Occupational Exposure Limit-SWITZERLAND	MAK-week 3 mg/m³, resp, JAN2011
Occupational Exposure Limit-THE NETHERLANDS	MAC-TGG 10 mg/m³, 2003
Occupational Exposure Limit-UNITED KINGDOM	time-weighted average 10 mg/m³ (inhal. dust), OCT2007
Occupational Exposure Limit-UNITED KINGDOM	time-weighted average 4 mg/m³ (resp. dust), OCT2007
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)	8H time-weighted average 15 mg/m³, total dust	CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)	8H time-weighted average 5 mg/m³, respirable fraction	CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)	8H time-weighted average 15 mg/m³, total dust	CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)	8H time-weighted average 5 mg/m³, respirable fraction	CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)	8H time-weighted average 15 mg/m³, total dust	CFRGBR 29,1915.1000,1993
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)	8H time-weighted average 5 mg/m³, respirable fraction	CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

Organization	Standard	Reference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO SILICON CARBIDE, resp. fraction-air	10H time-weighted average 5 mg/m³	NIOSH* DHHS #92-100,1992
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO SILICON CARBIDE, total dust-air	10H time-weighted average 10 mg/m³	NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983	Hazard Code X4228; Number of Industries 4; Total Number of Facilities 158; Number of Occupations 12; Total Number of Employees Exposed 8693; Total Number of Female Employees Exposed 84
National Occupational Exposure Survey 1983	Hazard Code X6494; Number of Industries 25; Total Number of Facilities 1250; Number of Occupations 22; Total Number of Employees Exposed 17481; Total Number of Female Employees Exposed 1482
National Occupational Exposure Survey 1983	Hazard Code 17525; Number of Industries 129; Total Number of Facilities 13729; Number of Occupations 97; Total Number of Employees Exposed 250945; Total Number of Female Employees Exposed 19568
National Occupational Hazard Survey 1974	Hazard Code 17525; Number of Industries 184; Total Number of Facilities 25235; Number of Occupations 97; Total Number of Employees Exposed 268082

Status in Federal Agencies

Organization	Reference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001

Page last reviewed: November 16, 2018

Content source: National Institute for Occupational Safety and Health