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CHLOROSULFONIC ACID

CHLOROSULFONIC ACID
 
CAS NO.:  7790-94-5
EC/LIST NO.: 232-234-6

Chlorosulfuric acid (IUPAC name: sulfurochloridic acid) is the inorganic compound with the formula HSO3Cl. 
Chlorosulfuric acid is also known as chlorosulfonic acid, being the sulfonic acid of chlorine. 
Chlorosulfuric acid is a distillable, colorless liquid which is hygroscopic and a powerful lachrymator.

Salts and esters of chlorosulfuric acid are known as chlorosulfates.

Chlorosulfuric acid is a tetrahedral molecule. 
The formula is more descriptively written SO2(OH)Cl, but HSO3Cl is traditional. 
Chlorosulfuric acid is an intermediate, chemically and conceptually, between sulfuryl chloride (SO2Cl2) and sulfuric acid (H2SO4).
The compound is rarely obtained pure. Upon standing with excess sulfur trioxide, it decomposes to pyrosulfuryl chlorides:

2 ClSO3H + SO3 → H2SO4 + S2O5Cl2


Chlorosulfonic acid (ClSO2OH) is a clear to strawcolored liquid with a pungent odor. 
Chlorosulfuric acid is a highly reactive chemical compound containing equimolar quantities of HCl and SO3 with a molecular weight of 116.52. 
Chlorosulfuric acids Chemical Abstract name is Chlorosulfuric Acid, with Registry Number(CAS) 7790-94-5. 
Chlorosulfuric acid reacts violently with water evolving heat and large quantities of white fumes of hydrochloric and sulfuric acid. 
The uses are principally in organic synthesis as a sulfating, sulfonating or chlorosulfonating agent. 
Chlorosulfuric acid is preferred in many applications because it is a strong agent that is less destructive than sulfur trioxide.
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Chlorosulfuric acid is a compound with general formula RSO2OH, where R is an aliphatic or aromatic hydrocarbon. 
Chlorosulfuric acid is a derivative of sulfuric acid (HOSO2OH) where an OH has been replaced by a carbon group or a compound where a hydrogen atom has been replaced by treatment with sulfuric acid; for example, benzene is converted to benzenesulfonic acid (water-soluble). 
Chlorosulfuric acid has a sulfur atom bonded to a carbon atom of a hydrocarbon and bonded also to three oxygen atoms, one of which has been attached to a hydrogen atom. 
Chlorosulfuric acidis acidic due to the hydrogen atom, stronger than a carboxylic acid. 
Chlorosulfuric acid is one of the most important organo sulfur compounds in organic synthesis. 
Chlorosulfuric acid are used as catalysts in esterification, alkylation and condensation reactions. 
Chlorosulfuric acid are salts or esters of sulfonic acid. 
Chlorosulfuric acid salts are soluble in water. 
Chlorosulfuric acid and its salts present in organic dyes provide useful function of water solubility and or improve the washfastness of dyes due to their capabiltity of binding more tightly to the fabric. 
They are widely used in the detergent industry. 


Chlorosulfuric acid is the largest-volume synthetic surfactant because of Chlorosulfuric acids relatively low cost, good performance, the fact that it can be dried to a stable powder and the biodegradable environmental friendliness. 
Chlorosulfuric acid cleaners do not form an insoluble precipitates in hard water. 
Chlorosulfuric acid salts and esters are intermediates widely used in organic synthesis and particularly phenolic compounds and cation exchange resins. 
They are synthetic intermediate for a number of biologically active compounds and pharmaceutical candidates such as sulfa drugs. 
Short carbon chain metallic sulfonate is used in electroplating which is a process for applying a metallic coating on a metal surface by electrodeposition from a suitable electrolyte solution for imparting corrosion resistance and direct production of printed circuit boards without etching out of a piece of copper sheet.
Chlorosulfonic Acid is a corrosive, clear liquid; melting point -80 C; boiling point 151 C; soluble in chlorinated solvents. 
Chlorosulfuric acid is hygroscopic and lachrymatory strongly. 
Chlorosulfuric acid reacts with water to form HCl. 
Chlorosulfonic Acid is used to produce organic sulfonic aicds for the end applications of detergent, pharmaceuticals, pesticides, and dyes. 
Chlorosulfuric acid was a starting material to produce saccharin.


Cholorosulfonic acid is a clear, corrosive, straw colored liquid with a pungent odor. 
Chlorosulfuric acid reacts violently eith water with wvolution of heat and larg quantities of dense white fumes. 
Hydrochloric acid and sulfuric acid are formen on decomposition.

Chlorosulfonic acid is a strong acid that is synthesized on an industrial scale by reacting sulfur trioxide and dry hydrogen chloride gas in an equimolar ratio. 
Chlorosulfuric acid can act as a sulfonating, dehydrating, oxidizing and chlorinating agent. 
Chlorosulfuric acid is reported to be a better electrophilic olefin cyclization agent in comparison to other sulfonic acids. 
Chlorosulfuric acids infrared spectra in the solid, liquid and gaseous state have been recorded in the region 4000-400cm-1.

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.

Chlorosulfuric 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, a
cetic 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

Chlorosulfonic acid is a very powerful oxidizing agent. 
Chlorosulfuric acid should never be stored near anything that will burn, and that includes all organic material. 
Fuel can be defined as “anything that will burn.” Since all organic materials will burn, they are all fuels.
Fuels refer not only to organic materials used in automobiles, heating, and cooking but also to wood and wood products, cardboard, and paper and paper products. 
Hydrocarbon derivatives such as alcohols, ethers, aldehydes, ketones, esters, organic acids, peroxides, and amines are also fuels, as are all other hydrocarbon compounds and mixtures.

Chlorosulfonic acid is a pale yellow to amber coloured fuming liquid with a strong odour.
Chlorosulfuric acid hydrolyses in the presence of water.

Chlorosulfonic acid, ClS03H, also known as chlorosulfuric acid and sulfuric chlorohydrin, is an colorless to light yellow oily liquid. 
Chlorosulfuric acid is formed from sulfur trioxide and hydrogen chloride, but decomposes in water to form hydrochloric acid and sulfuric acid.
Chlorosulfuric acid is a vigorous dehydrating agent and is used in manufacturing synthetic drugs,poison gas, and saccharin.

Chlorosulfonic Acid, Reagent, also known as Chlorosulfuric acid, is a powerful lachrymator and a synthetic organic reagent for the preparation of sulfonic acids. 
The Reagent grade denotes that this chemical is the highest quality commercially available and that the American Chemical Society has not officially set any specifications for this material. 
Spectrum Chemical manufactured Reagent grade products meet the toughest regulatory standards for quality and purity.

The industrial synthesis entails the reaction of hydrogen chloride with a solution of sulfur trioxide in sulfuric acid:

We are one of India's leading manufacturers, exporters & suppliers of Chloro Sulfonic Acid (CSA). 
Chlorosulfuric acid chemical name is Chloro Sulfonic Acid. 
The CAS Number of Chloro Sulfonic Acid (CSA) is 7790-94-5 and its chemical formula is HClO3S. 
The most common end use is Dyes ,Basic Pharma ,Speciality Chemicals

Chlorosulfuric acid a colorless or yellowish, highly corrosive, pungent liquid, HClO3S, usually produced by treating sulfur trioxide with hydrogen chloride:
used in organic synthesis to introduce the sulfonyl chloride group, =SO2Cl.

HCl + SO3 → ClSO3H

Chlorosulfuric acid can also be prepared by chlorination of sulfuric acid, written here for pedagogical purposes as HSO3(OH), vs. the usual format H2SO4:

PCl5 + HSO3(OH) → HSO3Cl + POCl3 + HCl

The latter method is more suited for laboratory-scale operations.

ClSO2OH is used to prepare alkyl sulfates, which are useful as detergents and as chemical intermediates:

ROH + ClSO3H → ROSO3H + HCl

An early synthesis of saccharin begins with the reaction of toluene with ClSO2OH to give the ortho- and para-toluenesulfonyl chloride derivatives:

CH3C6H5 + 2 ClSO2OH → CH3C6H4SO2Cl + H2SO4 + HCl

Oxidation of the ortho isomer gives the benzoic acid derivative that then is cyclized with ammonia and neutralized with base to afford saccharin.

Chlorosulfonic acid is a highly corrosive, colorless to yellow, slightly cloudy, fuming liquid with a sharp odor.

Chlorosulfonic acid has been used as an anti-contrail agent in Ryan Model 147 reconnaissance drones, and to produce smoke screens

Chlorosulfonic acid has a strong, irritating, acrid odor and is very hydroscopic. 
Chlorosulfuric acid reacts violently with water, so uncontrolled contact with aqueous systems should be avoided.

Benzoic acid is used in the production of medicine, dye carrier, plasticizer, spice and food preservatives, and is also used to improve the performance of alkyd resin coatings.

Chlorosulfuric acid is a tetrahedral molecule. 
The formula is more descriptively written SO2(OH)Cl, but HSO3Cl is traditional. 
Chlorosulfuric acid is an intermediate, chemically and conceptually, between sulfuryl chloride (SO2Cl2) and sulfuric acid (H2SO4).
Chlorosulfuric acid is rarely obtained pure. Upon standing with excess sulfur trioxide, Chlorosulfuric acid decomposes to pyrosulfuryl chlorides:

2 ClSO3H + SO3 → H2SO4 + S2O5Cl2

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.

Molecular formula  : HO3SCl
Molecular weight  : 116.5
CAS number  : 7790-94-5
EINECS number : 232-234-6

Appearance 
Pale :  yellow to amber coloured liquid
pH :  Acidic
Strength (by titration)  : 98% w/w minimum
Free sulfur trioxide  : 0.5% w/w maximum
Chloride as HCl  : 0.5% w/w maximum
Fe content  : 50 ppm maximum

Melting point  : -80°C
Boiling point  : 158°C
Vapour pressure  : 1 mmHg at 20°C
Specific gravity : 1.74 to 1.76 at 20°C

Chlorosulfonic acid may be used in the following processes:
Synthesis of di-n-butyl ammonium chlorosulfonate, a secondary amine ionic liquid.
To prepare sulfonated polyethersulfone (SPES) with enhanced hydrophilic property.
To attach sulfate group to silk fibroin for improving its anticoagulant ability.
As a catalyst to prepare substituted coumarin, via von Pechmann condensation between phenol and β-ketoester.
As a substitute to acid catalyst in Biginelli reaction to prepare 3,4dihydropyrimidines.

Chlorosulfuric acid is used in the manufacture of catalysts, chemical blowing agents, detergents, dyes, pesticides, pharmaceuticals, pigments, plastics resins, plasticizers, saccharin, surfactants, tanning agents, and many other chemicals and chemical intermediates.

Chlorosulfonic acid is used most widely for sulfating liquid long chain alcohols. 
The reaction is relatively simple and rapid and goes to completion through the loss of HCI. 
Chlorosulfuric acid is a strong agent, but reacts more moderately than sulfur trioxide with good yields and color. 
Solid alcohols as well as ethoxylated alcohols, ester alcohols and long chain hydroxy amides can be sulfated in halogenated solvents. 
Sulfation with Chlorosulfuric acid generally requires close to stoichiometric amounts, thus minimizing purification problems. 
Long chain fatty acids and aromatic compounds can be sulfonated with Chlorosulfuric acid, and sulfamation reactions can be carried out with aliphatic and aromatic amines. 
Specific reactions are improved in some cases by the use of solvents, additives or Chlorosulfuric acid complexes with other agents such as SO3 , ethers, amides and tertiary amines. 

Chlorosulfonic acid forms dense white clouds of sulfuric acid mist and hydrogen chloride gas when exposed to air.
Prevention of spills and releases of chlorosulfonic acid should be carefully considered in the design and operation of facilities handling this acid.
Factors important in spill prevention include facility design, facility monitoring, detailed operating and unloading procedures, and employee training and education. 
See further discussion of factors to consider in design under
Engineering Control of Hazards. 

Chlorosulfuric 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

Chlorosulfuric acid manufacture of sulfone Compounds, saccharin.
As chlorosulfonating and condensing agent in organic syntheses.

Chlorosulphonic Acid is a colorless to yellow, slightly cloudy, fuming liquid. 
Chlorosulfuric acid has a sharp odor and is used to make detergents, pharmaceuticals, dyes, pesticides and resins. 

Chlorosulfonic acid is used as detergent and as an anti-contrail agent. 
Chlorosulfuric acid is used as an intermediate in the production of other substances such as pharmaceuticals and chemicals. 
Chlorosulfuric acid finds application in producing smoke screens.

Hygroscopic. 
Incompatible with strong bases, carbonates, water, strong oxidizing agents, sulfides, cyanides and carbides.

Chlorosulfuric 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.

Chlorosulfonic acid assisted the exfoliation of MoS2 and WS2 resulting in retaining their semiconducting 2H-phase, sharply contrasting the semiconducting-to-metallic phase-transition observed with the currently available exfoliation techniques.

The major use of  Cholorosulfonic is for sulfating long chain alcohols. 
In addition , sulfonation reactions are made with fatty acids and aromatic compounds.. 
Also , sulformation reactions are carried out with aliphatic and aromatic amines. 
Specific areas of usage include

Manufacture of surfactants
Preparation of intermediates for  making dyes and pigments 
Manufacture of pharmaceuticals for human and veterinary medicines
Manufacure of chemical blowing agents
Miscellaneous chemical process applications employing organic sulfates, sulfamates 

Chlorosulfonic acid is used as a chemical intermediate for dyes, pesticides, and on-exchange resins. 
Chlorosulfuric acid is used in: 
pharmaceuticals including sulfa drugs and saccharin; 
alkyl sulfate and alkylphenol ethoxylate sulfate surfactants; 
as a chlorosulfonating and condensing agent in organic synthesis; 
in the manufacture of synthetic detergents, anhydrous hydrogen chloride and smoke producing chemicals


Chlorosulfonic acid (chemical chlorine formula: ClSO2OH) is a colorless or yellow liquid liquid with a pungent odor, smoke smoke, after a sulfuric acid-OH group-substituted.
The molecule is a tetrahedral structure, grown as a group of substituted structures and sulfonated organic products as preservation, for preparation, dyes, cooking, detergent and preparation for food, a tear, food.

As sulfur trioxide and inorganic raw material, organic acid organic acid CSO3H. 
The chamber is a colorless and oily liquid at 151 ~ 152 ℃, boiling at atmospheric pressure, no irritating odor.
Leakage of water in the air to form hygroscopic fumes and corrosive, corrosive, sulfuric acid and orchid.
Dichloroethane, dichloromethane, chloroform, acetic acid and carbon disulfide and carbon tetrachloride were dissolved in insoluble trifluoroacetic acid.

In the method synthesis, the continuous process, the reaction was controlled at 115 ~ 130 ℃, to produce industrial chloride and sulfur trioxide in the final synthesis.
The resulting cooled was isolated from chlorosulfonic acid. The reaction is: HCl SO3 ─ → ClSO3H

Production tools used carbon steel.

Chlorosulfuric acids formula is ClSO2OH, a smoky room.
Chlorosulfuric acid decomposes in water to yield sulfuric and hydrochloric acids.
Medicines, insecticides and dyes are used.
Chlorosulfuric acid is also called sulfuric hydrochlorine,

IUPAC NAME :

chloranesulfonic acid

Chlorosulfonic Acid

Chlorosulfonic acid

Chlorosulfuric acid

chlorosulfuric acid

Chlorosulphonic acid

chlorosulphonic acid

Chlorosulphuric acid

SYNONYMS:

232-234-6 
2O9AXL1TJ4
7790-94-5 
Acide sulfurochloridique 
Chlorosulfonic acid
Chlorosulfuric acid 
Chlorosulfuric acid 
chlorosulphonic acid
Chlorosulphuric acid
FX5730000

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