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Registry of Toxic Effects of Chemical Substances (RTECS)

Arsenic acid, monopotassium salt

RTECS #

CG1100000

CAS #

7784-41-0

Updated

September 201

Molecular Weight

180.04

Molecular Formula

AsH2O4·K

Synonyms

Macquer's salt
Monopotassium arsenate
Monopotassium dihydrogen arsenate
Potassium acid arsenate
Potassium arsenate, monobasic
Potassium dihydrogen arsenate
Potassium hydrogen arsenate

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
International Agency for Research on Cancer (IARC)Cancer Review:Human Sufficient EvidenceIMEMDT 23,39,1980

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-BELGIUMtime-weighted average 0.1 mg(As)/m3, Carcinogen, MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 0.01 mg(As)/m3, carc, MAY2011
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 0.2 mg(As)/m3, 2006
Occupational Exposure Limit-MEXICOtime-weighted average 0.2 mg(As)/m3, 2004
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 0.05 mg(As)/m3, carcinogen, JAN2002
Occupational Exposure Limit-NORWAYtime-weighted average 0.01 mg(As)/m3, JAN1999
Occupational Exposure Limit-POLANDMAC(time-weighted average) 0.01 mg(As)/m3, JAN1999
Occupational Exposure Limit-SWEDENtime-weighted average 0.01 mg(As)/m3, Carcinogen, JUN2005
Occupational Exposure Limit-SWITZERLANDMAK-week 0.1 mg(As)/m3, carc 1, inhal, JAN2011
Occupational Exposure Limit-THAILANDtime-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 0.1 mg(As)/m3, carc, 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

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
NIOSH CURRENT INTELLIGENCE BULLETIN 14, 1976
NTP 11th Report on Carcinogens,2004:Known to be human carcinogen
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