Chlorosulfonic acid

Modify Date: 2025-08-21 11:34:19

Chlorosulfonic acid Structure
Chlorosulfonic acid structure
 Common Name Chlorosulfonic acid
CAS Number 7790-94-5 Molecular Weight 116.524
Density 2.0±0.1 g/cm3 Boiling Point 158.0±9.0 °C at 760 mmHg
Molecular Formula HClO3S Melting Point -80°C
MSDS N/A Flash Point 158°C

 Names

Name sulfurochloridic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 2.0±0.1 g/cm3
Boiling Point 158.0±9.0 °C at 760 mmHg
Melting Point -80°C
Molecular Formula HClO3S
Molecular Weight 116.524
Flash Point 158°C
Exact Mass 115.933495
PSA 62.75000
LogP 0.11
Vapour density 4 (vs air)
Vapour Pressure 1.4±0.6 mmHg at 25°C
Index of Refraction 1.501
Water Solubility reacts

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
FX5730000
CHEMICAL NAME :
Chlorosulfuric acid
CAS REGISTRY NUMBER :
7790-94-5
LAST UPDATED :
199710
DATA ITEMS CITED :
7
MOLECULAR FORMULA :
Cl-H-O3-S
MOLECULAR WEIGHT :
116.52
WISWESSER LINE NOTATION :
QSGO&O

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
50 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - cyanosis Skin and Appendages - hair
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0570953
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
926 mg/m3/1H
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Liver - changes in liver weight Blood - changes in spleen
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0570953 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-UNITED KINGDOM:TWA 1 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81770 No. of Facilities: 139 (estimated) No. of Industries: 3 No. of Occupations: 8 No. of Employees: 1690 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81770 No. of Facilities: 42 (estimated) No. of Industries: 5 No. of Occupations: 18 No. of Employees: 3257 (estimated) No. of Female Employees: 247 (estimated)

 Safety Information

Hazard Codes C:Corrosive
Risk Phrases R14;R35;R37
Safety Phrases S26-S45
RIDADR UN 1754 8/PG 1
WGK Germany 1
RTECS FX5730000
Packaging Group I
Hazard Class 8
HS Code 2806200000

 Synthetic Route

 Customs

HS Code 2806200000

 Synonyms

sulfonic chloride acid
Monochlorosulfuric acid
MFCD00011523
chlorosulfonic acid
sulfo-chloride
EINECS 232-234-6
chloro-sulphonic acid
Chlorosulphuric acid
mesyl chloride
Sulfuric chlorohydrin
Sulfonic acid,monochloride
Chlorosulfuric acid
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