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Registry of Toxic Effects of Chemical Substances (RTECS)

Silicate(2-), hexafluoro-, dihydrogen

RTECS #

VV8225000

CAS #

16961-83-4; 1309-45-1

Updated

April 2013

Molecular Weight

144.11

Molecular Formula

F6Si·2H

Synonyms

Acide fluorosilicique (French)
Acide fluosilicique (French)
Acido fluosilicico (Italian)
Dihydrogen hexafluorosilicate (2-)
FKS
Fluosilicic acid
Hexafluorokieselsaiure (German)
Hexafluorokiezelzuur (Dutch)
Hexafluosilicic acid
Hydrofluosilicic acid
Hydrogen hexafluorosilicate
Hydrosilicofluoric acid
Kiezelfluorwaterstofzuur (Dutch)
Sand acid
Silicofluoric acid
Silicon hexafluoride dihydride

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
oral/rat lethal dose (50 percent kill): 430 mg/kgBehavioral: Somnolence (general depressed activity)NTIS** OTS0555557
subcutaneous/frog lowest published lethal dose: 140 mg/kgCRSBAW 124,133,1937

Reviews

OrganizationStandardReference
TOXICOLOGY REVIEWAMSSAQ 400,5,1963

Standards and Regulations

OrganizationStandardReference
Occupational Exposure Limit-AUSTRALIAtime-weighted average 2.5 mg(F)/m3, JUL2008
Occupational Exposure Limit-BELGIUMtime-weighted average 2.5 mg(F)/m3, MAR2002
Occupational Exposure Limit-FINLANDtime-weighted average 2.5 mg(F)/m3, NOV2011
Occupational Exposure Limit-GERMANYMAK 1 mg(F)/m3, inhal, 2011
Occupational Exposure Limit-HUNGARYtime-weighted average 2.5 mg(F)/m3, short term exposure limit 10 mg(F)/m3, Skin, SEP2000
Occupational Exposure Limit-MEXICOtime-weighted average 2.5 mg(F)/m3, 2004
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 2.5 mg(F)/m3CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)8H time-weighted average 2.5 mg(F)/m3CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)8H time-weighted average 2.5 mg(F)/m3CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)8H time-weighted average 2.5 mg(F)/m3CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO FLUORIDES, INORGANIC-air10H time-weighted average 2.5 mg(F)/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code 81843; Number of Industries 19; Total Number of Facilities 1758; Number of Occupations 15; Total Number of Employees Exposed 10867; Total Number of Female Employees Exposed 2068
National Occupational Hazard Survey 1974Hazard Code 81843; Number of Industries 7; Total Number of Facilities 142; Number of Occupations 14; Total Number of Employees Exposed 775

Status in Federal Agencies

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