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          The National Institute for Occupational Safety and Health (NIOSH)
         1. Registry of Toxic Effects of Chemical Substances (RTECS)
      Gypsum
            Related Pages
                RTECS #
                  MG2360000
                CAS #
                  13397-24-5
                  See: NMAM or OSHA Methods
                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/Organism       Dose                                                     Effect                                       Reference          
                                                                                        Tumorigenic: Carcinogenic by RTECS criteria                     
          intraperitoneal/rat  lowest published toxic dose: 450 mg/kg/3W- intermittent                                               ZHPMAT 162,467,1976
                                                                                        Tumorigenic: Tumors at site of application                      
          Acute Toxicity Data and References
            Route/Organism    Dose                                                               Effect                                              Reference            
                                                                                                 Olfaction: Other olfaction effects                                       
            inhalation/human  lowest published toxic concentration: 194 gm/m3/10Y- intermittent  Lung, Thorax, or Respiration: Fibrosing alveolitis  GTPZAB 11(10),23,1967
                                                                                                 Lung, Thorax, or Respiration: Other changes                              
            Reviews
              Organization                                                       Standard                                              Reference          
              American Conference of Governmental Industrial Hygienists (ACGIH)  Threshold Limit Value-time-weighted average 10 mg/m3  DTLVS* TLV/BEI,2013
              Standards and Regulations
                Organization                                                                                        Standard                                                                 Reference               
                Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;                                                                                                                
                Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV                                                                                                                                    
                Occupational Exposure Limit-FRANCE                                                                  VME 10 mg/m3, FEB2006                                                                            
                Occupational Exposure Limit-GERMANY                                                                 MAK 1.5 mg/m3 (resp.), 2011                                                                      
                Occupational Exposure Limit-GERMANY                                                                 MAK 4 mg/m3 (inhal.), 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, 2004                          
                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 GYPSUM, respirable 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 GYPSUM, total dust-air           10H time-weighted average 10 mg/m3                                                                                                                                                              NIOSH* DHHS #92-100,1992
                  National Occupational Exposure Survey 1983                                                                                   Hazard 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 1983                                                                                   Hazard 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 1974                                                                                     Hazard 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
                    Organization                                               Reference
                    EPA TSCA Section 8(d) unpublished health/safety studies             
                    EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001           
                  Page last reviewed: November 16, 2018
                    Content source: National Institute for Occupational Safety and Health
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