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LC1332 Chlorosulfonic acid

for synthesis


Order number Packaging Quantity Price €
AC28332 Glass bottle 250 ml 19.8
AC28332 Glass bottle 1 l 36


Product information
Synonyms Sulfuric chlorohydrin, Chlorosulfuric acid
Hill Formula HClO3S
HS Code 2806 20 00
EC number 232-234-6
Molar mass 116.53 g/mol
EC index number 016-017-00-1
CAS number 7790-94-5


Chemical and physical data
Solubility (20 °C) explosion decomposition
Melting point -80 °C
Molar mass 116.53 g/mol
Density 1.75 g/cm3 (20 °C)
pH value < - 1 (H2O, 20 °C) Aqueous solution,(rigorous decomposition)
Boiling point 152 °C (1013 hPa) (decomposition)
Vapor pressure 3.08 hPa (20 °C)


Safety information according to GHS
Hazard Statement(s) H314: Causes severe skin burns and eye damage.
H335: May cause respiratory irritation.
EUH014: Reacts violently with water.
Precautionary Statement(s) P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
RTECS FX5730000
Storage class 8 B Non combustible, corrosive substances
WGK WGK 1 slightly water endangering
Disposal 11
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.


Safety information
R Phrase R 14-35-37
Reacts violently with water.Causes severe burns.Irritating to respiratory system.
S Phrase S 26-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger corrosive
Hazard Symbol Corrosive


Transport information
Declaration (transport by sea) IMDG-Code UN 1754 CHLOROSULPHONIC ACID, 8, I, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 1754 CHLOROSULPHONIC ACID, 8, I


Toxicological data
LD 50 oral LD50 rat 50 mg/kg


Assay (acidimetric) ≥ 97 %
Density (d 20 °C/ 4 °C) 1.740 – 1.760
Free SO3 ≤ 1 %
Free HCl ≤ 1 %
Free Sulfuric acid ≤ 1 %