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Registry of Toxic Effects of Chemical Substances (RTECS)

Chlorosulfuric acid

RTECS #

FX5730000

CAS #

7790-94-5

Updated

March 2011

Molecular Weight

116.52

Molecular Formula

ClHO3S

Synonyms

Chlorosulfonic acid
Monochlorosulfuric acid
Sulfonic acid, monochloride
Sulfuric chlorohydrin

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
inhalation/rat lethal dose (50 percent kill): 4779 mg/m3/4HBehavioral: Somnolence (general depressed activity)

Behavioral: Ataxia

Lung, Thorax, or Respiration: Dyspnea
NTIS** OTS0541018
oral/rat lethal dose (50 percent kill): 50 mg/kgBehavioral: Somnolence (general depressed activity)

Lung, Thorax, or Respiration: Cyanosis

Skin and Appendages: Other: Hair
NTIS** OTS0570953

Standards and Regulations

OrganizationStandardReference
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.209 ppm (1 mg/m3), JUL2008
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 1 mg/m3, JAN2002
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 1 mg/m3, OCT2007

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Occupational Exposure Survey 1983Hazard Code 81770; Number of Industries 5; Total Number of Facilities 42; Number of Occupations 18; Total Number of Employees Exposed 3257; Total Number of Female Employees Exposed 247
National Occupational Hazard Survey 1974Hazard Code 81770; Number of Industries 3; Total Number of Facilities 139; Number of Occupations 8; Total Number of Employees Exposed 1690

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
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