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Registry of Toxic Effects of Chemical Substances (RTECS)

Gypsum

RTECS #

MG2360000

CAS #

13397-24-5

Updated

September 2013

Molecular Weight

172.18

Molecular Formula

O4S·Ca·2H2O

Synonyms

GIPS
Gypsite
Gypsum (OSHA)
Gypsum stone
Landplaster
Phosphogypsum

Tumorigenic Data and References

Route/OrganismDoseEffectReference
intraperitoneal/rat lowest published toxic dose: 450 mg/kg/3W- intermittentTumorigenic: Carcinogenic by RTECS criteria

Tumorigenic: Tumors at site of application
ZHPMAT 162,467,1976

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
inhalation/human lowest published toxic concentration: 194 gm/m3/10Y- intermittentOlfaction: Other olfaction effects

Lung, Thorax, or Respiration: Fibrosing alveolitis

Lung, Thorax, or Respiration: Other changes
GTPZAB 11(10),23,1967

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
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
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-KOREAtime-weighted average 10 mg/m3, 2006
Occupational Exposure Limit-MEXICOtime-weighted average 10 mg/m3;short term exposure limit 20 mg/m3, 2004
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 10 mg/m3 (inhal. dust), OCT2007
Occupational Exposure Limit-UNITED KINGDOMtime-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 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 GYPSUM, respirable fraction-air10H time-weighted average 5 mg/m3NIOSH* DHHS #92-100,1992
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO GYPSUM, total dust-air10H time-weighted average 10 mg/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code X6990; Number of Industries 10; Total Number of Facilities 883; Number of Occupations 13; Total Number of Employees Exposed 7865; Total Number of Female Employees Exposed 1279
National Occupational Exposure Survey 1983Hazard Code 90980; Number of Industries 43; Total Number of Facilities 8667; Number of Occupations 53; Total Number of Employees Exposed 134487; Total Number of Female Employees Exposed 2851
National Occupational Hazard Survey 1974Hazard Code 90980; Number of Industries 40; Total Number of Facilities 5045; Number of Occupations 73; Total Number of Employees Exposed 137347

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
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