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Registry of Toxic Effects of Chemical Substances (RTECS)

Sulfuric acid, calcium salt (1:1)

RTECS #

WS6920000

CAS #

7778-18-9; 23296-15-3

Updated

September 2013

Molecular Weight

136.14

Molecular Formula

Ca·O4S

Synonyms

Anhydrous calcium sulfate
Calcium sulfate
Calcium sulfate (ACGIH:OSHA)
Crysalba
Drierite
GIBS
Thiolite

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 10 mg/m3DTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Environmental Protection Agency (EPA) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATIONFEREAC 54,7740,1989
Environmental Protection Agency (EPA) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1998 STATUS OF PESTICIDESCancelledRBREV* -,320,1998
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRIAMAK-TMW 5 mg/m3;KZW 10 mg/m3, resp, 2007
Occupational Exposure Limit-BELGIUMtime-weighted average 10 mg/m3, MAR2002
Occupational Exposure Limit-FRANCEVME 10 mg/m3, FEB2006
Occupational Exposure Limit-GERMANYMAK 1.5 mg/m3 (resp.), 2011
Occupational Exposure Limit-GERMANYMAK 4 mg/m3 (inhal.), 2011
Occupational Exposure Limit-HUNGARYtime-weighted average 6 mg/m3 (resp), SEP2000
Occupational Exposure Limit-KOREAtime-weighted average 10 mg/m3, 2006
Occupational Exposure Limit-MEXICOtime-weighted average 10 mg/m3 (inhalable), 2004
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 10 mg/m3 (inspirable dust), JAN2002
Occupational Exposure Limit-PERUtime-weighted average 10 mg/m3, JUL2005
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 15 mg/m3, total dustCFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 5 mg/m3, respirable fractionCFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)8H time-weighted average 15 mg/m3, total dustCFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)8H time-weighted average 5 mg/m3, respirable fractionCFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)8H time-weighted average 15 mg/m3, total dustCFRGBR 29,1915.1000,1993
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)8H time-weighted average 5 mg/m3, respirable fractionCFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CALCIUM SULFATE, respirable fraction-airtime-weighted average 5 mg/m3NIOSH* DHHS #95-121,1995
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CALCIUM SULFATE, total dust-air10H time-weighted average 10 mg/m3NIOSH* DHHS #95-121,1995
National Occupational Exposure Survey 1983Hazard Code 80244; Number of Industries 76; Total Number of Facilities 10251; Number of Occupations 92; Total Number of Employees Exposed 209809; Total Number of Female Employees Exposed 25489
National Occupational Hazard Survey 1974Hazard Code 80244; Number of Industries 155; Total Number of Facilities 20643; Number of Occupations 105; Total Number of Employees Exposed 243889

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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