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Registry of Toxic Effects of Chemical Substances (RTECS)

Chromic acid, di-tert-butyl ester

RTECS #

GB2900000

CAS #

1189-85-1

Updated

September 2013

Molecular Weight

230.26

Molecular Formula

C8H18CrO4

Synonyms

Bis(tert-butyl)chromate
Chromic acid (H2CrO4), bis(1,1-dimethylethyl) ester (9CI)
t-Butyl chromate
tert-Butyl chromate
tert-Butyl chromate (ACGIH:OSHA)
tert-Butyl chromate(VI) (6CI,7CI)

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-ceiling concentration 0.1 mg(CrO3)/m3 (skin)DTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARDair-ceiling concentration 0.1 mg/m3 (skin)DTLVS* 3,33,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAceiling concentration 0.1 mg(CrO3)/m3, JUL2008
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.05 mg(Cr)/m3, JUL2008
Occupational Exposure Limit-BELGIUMtime-weighted average 0.01 mg(Cr)/m3, MAR2002
Occupational Exposure Limit-BELGIUMtime-weighted average 0.1 mg(CrO3)/m3, Skin, MAR2002
Occupational Exposure Limit-FRANCEVLE 0.1 mg(CrO3)/m3, Skin, C2 Carcinogen, FEB2006
Occupational Exposure Limit-JAPANOccupational Exposure Limit 0.5 mg(Cr)/m3, a2 sen, s1 sen, MAY2012
Occupational Exposure Limit-KOREAceiling concentration 0.1 mg/m3, skin, 2006
Occupational Exposure Limit-MEXICOpeak 0.1 mg/m3 (skin), 2004
Occupational Exposure Limit-NEW ZEALANDceiling concentration 0.1 mg(CrO3)/m3, skin, JAN2002
Occupational Exposure Limit-PERUshort term exposure limit 0.1 mg/m3, JUL2005
Occupational Exposure Limit-SWITZERLANDMAK-week 0.05 mg/m3, inhal, skin, JAN2011
Occupational Exposure Limit-THAILANDtime-weighted average 0.1 mg/m3, JAN1993
Occupational Exposure Limit-THE NETHERLANDSMAC-C 0.1 mg/m3, Skin, 2003
Occupational Exposure Limit-THE PHILIPPINEStime-weighted average 0.1 mg/m3, Skin, JAN1993
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)ceiling concentration 0.1 mg(CrO3)/m3 (skin)CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)ceiling concentration 0.1 mg(CrO3)/m3 (skin)CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)ceiling concentration 0.1 mg(CrO3)/m3 (skin)CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)ceiling concentration 0.1 mg(CrO3)/m3 (skin)CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO t-BUTYL CHROMATE-air10H Carcinogen time-weighted average 0.001 mg/m3NIOSH* DHHS #95-121,1995

Status in Federal Agencies

OrganizationReference
NTP 10th Report on Carcinogens,2002:Known to be a human carcinogen
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