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Registry of Toxic Effects of Chemical Substances (RTECS)

Sulfuric acid, fuming

RTECS #

WS5605000

CAS #

8014-95-7

Updated

May 2005

Molecular Weight

178.14

Molecular Formula

H2O4S·O3S

Synonyms

Disulphuric acid
Dithionic acid
Fuming sulfuric acid
Oleum
Pyrosulphuric acid
Sulfuric acid mixture with sulfur trioxide

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
inhalation/rat lethal concentration (50 percent kill): 347 ppm/1HTXAPA9 42,417,1977

Reviews

OrganizationStandardReference
International Agency for Research on Cancer (IARC)Cancer Review:Human Sufficient EvidenceIMEMDT 54,41,1992
International Agency for Research on Cancer (IARC)Cancer Review:Group 1IMEMDT 54,41,1992
TOXICOLOGY REVIEWANAEA3 35,165,1975

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO SULFURIC ACID, fuming-air10H time-weighted average 1 mg/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code T1966; Number of Industries 9; Total Number of Facilities 200; Number of Occupations 26; Total Number of Employees Exposed 8071; Total Number of Female Employees Exposed 1107

Status in Federal Agencies

OrganizationReference
NTP 11th Report on Carcinogens,2004:Known to be human carcinogen
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