Chlorosulfonic Acid CAS 7790-94-5 Industrial Grade Chemical Supplier
TDS 15 Inquiries
7790-94-5
Industrial Grade
99%
qingdao
OEM
25kg/Plastic Drum
2026-10-04
nitric acid,sles,xylene,aniline
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceChlorosulfonic 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. Chlorosulfonic acid is a highly corrosive, colorless to yellow, slightly cloudy, fuming liquid with a sharp odor.
Chlorosulfonic acid appears as a 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.|Liquid|COLOURLESS-TO-YELLOW LIQUID WITH PUNGENT ODOUR.
Chlorosulfonic acid appears as a 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.Certificates-
TDS
Basic Info-
Product Name:
Chlorosulfonic acid
Other Name:Chlorosulfuric acid;Chlorosulfonic acid;Sulfuric chlorohydrin;Monochlorosulfuric acid;Sulfuric acid chlorohydrin;Monochlorosulfonic acid;127529-03-7
CAS No.:7790-94-5
UN No.:1754
Molecular Formula:ClHO3S
InChIKeys:InChIKey=XTHPWXDJESJLNJ-UHFFFAOYSA-N
Molecular Weight:116.52400
Exact Mass:116.52
EC Number:232-234-6
UNII:2O9AXL1TJ4
ICSC Number:1039
UN Number:1754
DSSTox ID:DTXSID1029706
Color/Form:COLORLESS OR SLIGHTLY YELLOW LIQUID
HScode:2806200000
Categories:
Characteristics-
PSA:
62.75000
XLogP3:1.10880
Appearance:Chlorosulfonic acid appears as a 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.
Density:1.753 g/cm3 @ Temp: 20 °C
Melting Point:-80 °C
Boiling Point:60-64 °C @ Press: 2-4 Torr
Flash Point:158ºC
Refractive Index:1.4331
Water Solubility:Solubility in water: reaction
Storage Conditions:Store in a cool, dry, well-ventillated location. Separate from water, acids, alkalies, alcohols.
Vapor Pressure:1 mm Hg ( 25 °C)
Vapor Density:4 (vs air)
Explosive limit:Permonosulfonic acid was being prepared by reacting chlorosulfonic acid & 90% hydrogen peroxide. A sample was stored overnight at 0 deg C, then removed to test tube rack. In 10 minutes it exploded.
Odor:PUNGENT
Experimental Properties:DECOMPOSED BY ALCOHOL & ACIDS.
Air and Water Reactions:Fumes in air. Reacts exothermically and violently with water producing sulfuric acid, hydrochloric acid, and large quantities of dense white acid fumes [Merck, 11th ed., 1989]. Contact with water and metal produces explosive hydrogen gas (USCG, 1999). Chlorosulfonic acid reacts vigorously with water to generate gaseous HCl. Based on a scenario where the chemical is spilled into an excess of water (at least 5 fold excess of water), half of the maximum theoretical yield of Hydrogen Chloride gas will be created in 0.04 minutes. Experimental details are in the following: "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. Brown, H.M. Hartmann, W.A. Freeman, and W.D. Haney, Argonne National Laboratory, Argonne, Illinois, June 2009.
Reactive Group:Acids, Strong Oxidizing
Reactivity Alerts:Strong Oxidizing Agent
Reactivity Profile:CHLOROSULFONIC 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, it 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].
Autoignition Temperature:Not flammable (USCG, 1999)
Corrosivity:CORROSIVE MATERIAL.
Heat of Vaporization:198 btu/lb= 110 cal/g= 4.6X10+5 J/kg (est)
Hazard IdentificationClassification of the substance or mixture
Skin corrosion, Sub-category 1A
Specific target organ toxicity â single exposure, Category 3
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H314 Causes severe skin burns and eye damage
H335 May cause respiratory irritation
Precautionary statement(s) Prevention P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash ... thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
Response P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P363 Wash contaminated clothing before reuse.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316 Get emergency medical help immediately.
P321 Specific treatment (see ... on this label).
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P319 Get medical help if you feel unwell.
Storage P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO contact with alcohol, combustible substances, reducing agents or water. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from food and feedstuffs. See Chemical Dangers. Dry. Well closed.KEEP TIGHTLY CLOSED.
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Seller Information
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Business Type:
Trader
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Main Products:
nitric acid,sles,xylene,aniline
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Location:
UNIT 903, 9/F., CAMERON COMM CENTRE, 458-468 HENNESSY ROAD, CAUSEWAY BAY HONG KONG
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Payment Terms:
100% TT in advance
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Average lead Time:
15
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Total Annual Revenue:
$5 million-$10 million
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Total Employees:
51-100
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Year of Establishment:
2026
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Inquiry History15 Inquiries
Country Product Purchase Quantity Date Posted 
Mexico
Chlorosulfonic Acid
20 TON Apr 1, 2025 
Russia
Chlorosulfonic acid
1 L Nov 4, 2024
Russia
Chlorosulfonic acid
1 20' Fcl Nov 29, 2024
Russia
Chlorosulfonic acid
1 L Nov 1, 2024 
Kenya
Chloro sulfonic acid
100 MT Dec 30, 2025 
Oman
CHLOROSULFONIC ACID
100.00 G Mar 31, 2025 
Vietnam
Chlorosulfonic acid
500 G Jun 13, 2025 
South Korea
Chlorosulfonic acid
2 L Dec 22, 2023
Kenya
Chlorosulfonic Acid
100 MT Jul 31, 2026
Kenya
chloro sulphonic acid
1 KG Dec 31, 2025 
Philippines
Chlorosulfonic Acid
1 KG Nov 25, 2025
Russia
DMFA
2 L Nov 1, 2024
Russia
Triethylamine
1 L Nov 1, 2024
Russia
Paraform
1 KG Nov 1, 2024
Russia
Hexafluoroisopropanol
0.1 KG Nov 1, 2024 Post an enquiry for this product
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