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Registry of Toxic Effects of Chemical Substances (RTECS)

Dichromic acid, diammonium salt

RTECS #

HX7650000

CAS #

7789-09-5

Updated

April 2012

Molecular Weight

252.10

Molecular Formula

Cr2H2O7·2H3N

Synonyms

Ammonio (bicromato di) (Italian)
Ammonio (dicromato di) (Italian)
Ammonium (dichromate d') (French)
Ammonium bichromate
Ammonium dichromate
Ammonium dichromate (VI)
Ammoniumbichromaat (Dutch)
Ammoniumdichromaat (Dutch)
Ammoniumdichromat (German)
Bichromate d'ammonium (French)

Mutation Data and Reference

System TestRoute/Organism/TissueDoseReference
DNA repair/Salmonella typhimurium50 mmol/LTOLED5 7,439,1981
DNA repair/Bacillus subtilis50 mmol/LTOLED5 7,439,1981

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
oral/child lowest published lethal dose: 99 mg/kgGastrointestinal: Other changes

Kidney, Ureter, and Bladder: Changes in tubules (including acute renal failure, acute tubular necrosis)

Blood: Change in clotting factors
AEMED3 24,748,1994
subcutaneous/guinea pig lowest published lethal dose: 25 mg/kgEQSSDX 1,1,1975

Other Multiple Dose Data and References

Route/OrganismDoseEffectReference
inhalation/rat lowest published toxic concentration: 1 mg/m3/2H/28W- intermittentLung, Thorax, or Respiration: Structural or functional change in trachea or bronchi

Lung, Thorax, or Respiration: Acute pulmonary edema
VCVN5* -,303,1989

Reviews

OrganizationStandardReference
International Agency for Research on Cancer (IARC)Cancer Review:Human Sufficient EvidenceIMEMDT 49,49,1990
International Agency for Research on Cancer (IARC)Cancer Review:Group 1IMEMDT 49,49,1990
TOXICOLOGY REVIEW85DHAX Cr,22,1974
TOXICOLOGY REVIEWENTOX* -,602,2005

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 0.5 mg(Cr)/m3DTLVS* 3,35,1971
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.05 mg(Cr)/m3, JUL2008
Occupational Exposure Limit-FINLANDtime-weighted average 0.05 mg(CrO4)/m3, NOV2011
Occupational Exposure Limit-FRANCEVME 0.05 mg(Cr)/m3, FEB2006
Occupational Exposure Limit-RUSSIAshort term exposure limit 0.01 mg(Cr)/m3, Skin, Carcinogen, JUN2003
Occupational Exposure Limit-SWEDENtime-weighted average 0.005 mg(Cr)/m3;short term exposure limit 0.015 mg(Cr)/m3, Carcinogen, Sen, JUN2005
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 0.05 mg(Cr)/m3, carc, sen, OCT2007
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)ceiling concentration 0.1 mg(CrO3)/m3CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)ceiling concentration 0.1 mg(CrO3)/m3CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)ceiling concentration 0.1 mg(CrO3)/m3CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)ceiling concentration 0.1 mg(CrO3)/m3CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CHROMIUM(VI)-air10H Carcinogen time-weighted average 0.001 mg(Cr)/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code 06063; Number of Industries 23; Total Number of Facilities 3088; Number of Occupations 21; Total Number of Employees Exposed 25163; Total Number of Female Employees Exposed 5017
National Occupational Hazard Survey 1974Hazard Code 06063; Number of Industries 31; Total Number of Facilities 1812; Number of Occupations 15; Total Number of Employees Exposed 13389

Status in Federal Agencies

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