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Chlorosulfonic acid

Chlorosulfonic acid Basic information
Product Name:Chlorosulfonic acid
Synonyms:acidechlorosulfonique;chlorosulfonic;monochlorosulfuricacid;sulfonicacid,monochloride;AKOS BBS-00004309;CHLOROSULFONIC ACID;SULFURIC CHLOROHYDRIN;chlorosulphonic acid
CAS:7790-94-5
MF:ClHO3S
MW:116.52
EINECS:232-234-6
Product Categories:Pharmaceutical Intermediates;Inorganics;GlycosidesChemical Synthesis;Inorganic AcidsDerivatization Reagents TLC;Steroids, Terpenes, Lipids, Bile acidsDerivatization Reagents TLC;Derivatization Reagents TLC;Synthetic Reagents;TLC Reagents, A-C;TLC Visualization Reagents (alphabetic sort);TLC Visualization Reagents (by application);Miscellaneous Reagents
Mol File:7790-94-5.mol
Chlorosulfonic acid Structure
Chlorosulfonic acid Chemical Properties
Melting point -80°C
Boiling point 151-152 °C755 mm Hg(lit.)
density 1.753 g/mL at 25 °C(lit.)
vapor density 4 (vs air)
vapor pressure 1 mm Hg ( 25 °C)
refractive index n20/D 1.433(lit.)
Fp 158°C
solubility Miscible with hydrocarbons.
form Oily Liquid, Fuming In Air
color Yellow to brown
Water Solubility reacts
Sensitive Moisture Sensitive
Merck 14,2165
Stability:Stable, but reacts violently with water. In case of spills, mop up with sand - do not add water. Reacts with most metals to yield (flammable) hydrogen gas. Incompatible with strong bases, carbonates, water, combustible materials, strong oxidizing agents, most metals, organic materials, sulfides, cyanides, carbides.
CAS DataBase Reference7790-94-5(CAS DataBase Reference)
EPA Substance Registry SystemChlorosulfuric acid(7790-94-5)
Safety Information
Hazard Codes C
Risk Statements 14-35-37
Safety Statements 26-45
RIDADR UN 1754 8/PG 1
WGK Germany 1
RTECS FX5730000
TSCA Yes
HazardClass 8
PackingGroup I
HS Code 28062000
Hazardous Substances Data7790-94-5(Hazardous Substances Data)
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
Chlorosulfonic acid Usage And Synthesis
Chemical PropertiesChlorosulfonic acid, ClS03H, also known as chlorosulfuric acid and sulfuric chlorohydrin, is an colorless to light yellow oily liquid. It is formed from sulfur trioxide and hydrogen chloride, but decomposes in water to form hydrochloric acid and sulfuric acid.It is a vigorous dehydrating agent and is used in manufacturing synthetic drugs,poison gas, and saccharin.
UsesChlorosulfuric Acid is used in the preparation of benzothiazepinylphosphonate bile acid transporter inhibitor. Also used in the preparation ofsulfated guar gum for potential use as an antioxidant.
Usesmanufacture of sulfone Compounds, saccharin. As chlorosulfonating and condensing agent in organic syntheses.
General DescriptionA colorless to yellow colored fuming liquid with a pungent odor. Density 14.7 lb / gal. Causes severe burns. Very toxic by inhalation. Corrosive to metals.
Reactivity ProfileChlorosulfonic acid is a strong oxidizing acid. Reacts violently with water, strong mineral acids and bases, alcohols, finely dispersed organic matter. Dangerously incompatible with combustible materials, nitrates, chlorates, metallic powders, carbides, picrates, and fulminates. Undergoes possibly violent reactions with acetic acid, acetic anhydride, acetonitrile, acrolein, acrylic acid, acrylonitrile, alkali, allyl alcohol, allyl chloride, ammonium hydroxide, aniline, butyraldehyde, cresol, cumene, diethyleneglycol methyl ether, diisopropyl ether, diphenyl ether, ethyl acetate, ethyl acrylate, ethylene chlorohydrin, ethylenediamine, ethylene glycol, glyoxal, hydrocarbons (hexane, heptane), hydrogen peroxide, isoprene, powdered metals, methyl ethyl ketone, propylene oxide, vinyl acetate. When heated to decomposition, Chlorosulfonic acid emits toxic fumes of hydrogen chloride and oxides of sulfur [Sax, 9th ed., 1996, p. 831]. Reaction with phosphorus accelerates out of control and culminates in an explosion [Heumann, K. et al., Ber., 1882, 15, p. 417]. Mixing chlorosulfuric acid and 98% sulfuric acid may evolve HCl [Subref: Anon, Loss Prev. Bull. 1977, (013), 2-3].
Health HazardINHALATION: vapor extremely irritating to lungs and mucous membranes. Vapor has such a sharp and pentrating odor that inhalation of severely toxic quantities is unlikely unless it is impossible to escape the fumes. CONTACT WITH EYES OR SKIN: liquid acid will severely burn body tissue.
Purification MethodsDistil the acid in an all-glass apparatus, taking the fraction boiling at 156-158o. It reacts EXPLOSIVELY with water [Cremlyn Chlorosulfonic acid: A Versatile Reagent, Royal Society of Chemistry UK, 2002, p 308, ISBN 0854044981, Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 385 1963].
Tag:Chlorosulfonic acid(7790-94-5) Related Product Information
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