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Registry of Toxic Effects of Chemical Substances (RTECS)

Iron(III) o-arsenite, pentahydrate

RTECS #

NO4600000

CAS #

63989-69-5

Updated

September 201

Molecular Weight

607.34

Molecular Formula

As2Fe2O6·Fe2O3·5H2O

Synonyms

Ferric arsenite, basic

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 0.01 mg(As)/m3DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-Confirmed human carcinogenDTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 0.5 mg(As)/m3DTLVS* 3,16,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-ARAB Republic of Egypttime-weighted average 0.2 mg(As)/m3, JAN1993
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.05 mg(As)/m3, Carcinogen, JUL2008
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.1 mg(Fe)/m3, JUL2008
Occupational Exposure Limit-BELGIUMtime-weighted average 0.1 mg(As)/m3, Carcinogen, MAR2002
Occupational Exposure Limit-BELGIUMtime-weighted average 1 mg(Fe)/m3, MAR2002
Occupational Exposure Limit-HUNGARYceiling concentration 0.01 mg(As)/m3, Skin, Carcinogen, SEP2000
Occupational Exposure Limit-INDIAtime-weighted average 0.2 mg(As)/m3, JAN1993
Occupational Exposure Limit-KOREAtime-weighted average 1 mg(Fe)/m3, 2006
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 1 mg(Fe)/m3, JAN2002
Occupational Exposure Limit-NORWAYtime-weighted average 1 mg(Fe)/m3, JAN1999
Occupational Exposure Limit-POLANDMAC(time-weighted average) 0.01 mg(As)/m3, JAN1999
Occupational Exposure Limit-THAILANDtime-weighted average 0.5 mg(As)/m3, JAN1993
Occupational Exposure Limit-THE PHILIPPINEStime-weighted average 0.5 mg(As)/m3, JAN1993
Occupational Exposure Limit-TURKEYtime-weighted average 0.5 mg(As)/m3, JAN1993
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 1 mg(Fe)/m3;short term exposure limit 2 mg(Fe)/m3, OCT2007
Occupational Safety and Health Administration (OSHA)-cancer hazardCFRGBR 29,1910.1018,1987

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO ARSENIC, INORGANIC-airCarcinogen ceiling concentration 0.002 mg(As)/m3/15MNIOSH* DHHS #92-100,1992
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