ベンゼンスルホニルクロリド

Benzenesulfonyl chloride

HCID 7369CAS 98-09-9

基本情報

標準SMILES
O=S(=O)(Cl)c1ccccc1
InChIKey
CSKNSYBAZOQPLR-UHFFFAOYSA-N
分子式
C6H5ClO2S
平均分子量
176.62 g/mol
単同位体質量
175.9698783

名称と識別子

優先名称
Benzenesulfonyl chloride
IUPAC
benzenesulfonyl chloride
現地名
ベンゼンスルホニルクロリド
英語名
Benzenesulfonyl chloride
分子式
C6H5ClO2S
分子量
176.62

名称と別名

BENZENESULFONYL CHLORIDE98-09-9Phenylsulfonyl chlorideBenzene sulfochlorideBenzenesulfonic chlorideBenzene sulfonechlorideBenzenosulfochlorideBenzenesulphonyl chlorideBenzenosulfochlorekBENZENE SULFONYL CHLORIDEBenzolsulfochlorideBenezenesulfochloride
名称をさらに表示
ベンゼンスルホニルクロリド4-ベンゼンスルホン酸クロリドフェニルクロロスルホンベンゼンスルホン酸クロリド化ベンゼンスルホニル塩化ベンゼンスルホニルベンゼンスルホニル=クロリドベンゼンスルホニルクロリド, 98%benzenesulfonylBenzenesulphochlorideBenzolsulfonylchloridPhSO2Clbsc-refinedAKOS BBS-00004356
BenzenosulphochlorideBenzenesulfon chlorideBenzenesulfonic(acid)chlorideBenzenesulfonic (acid) chlorideDTXSID1026619RCRA waste no. U020UN2225OI9V0QJV9N

データベース識別子

CAS
98-09-9
PubChem CID
7369
DTXSID
DTXSID1026619
ChEMBL
CHEMBL1479161
UNII
OI9V0QJV9N
EC Number
202-636-6
Nikkaji
J3.983G

物性

構造計算による物性

XLogP
1.3
極性表面積
42.5 Ų
水素結合供与体数
0
水素結合受容体数
2
回転可能結合数
1
重原子数
10

実験および物理化学的性質

Density · 3 件

1.3842 at 59 °F (USCG, 1999) - Denser than water; will sink

SP GR: 1.3842 AT 15 °C/15 °C

1.384 @ 15°C

Color/FormCOLORLESS, OILY LIQUID
SolubilityINSOL IN WATER; SOL IN ETHER, ALCOHOL
Flash Point · 2 件

greater than 233.6 °F (USCG, 1999)

Flash point > 233 °F

Boiling Point · 2 件

484.7 °F at 760 mmHg (USCG, 1999)

177 °C AT 100 MM HG; 120 °C AT 10 MM HG; DECOMP 251-252 °C AT 760 MM HG

DecompositionDECOMP 251-252 °C AT 760 MM HG

物理化学的性質

融点
13 · 13-15 °C (lit.)
沸点
251 · 251-252 °C (lit.)
比重(密度)
1.384 g/mL · 1.384 g/mL at 25 °C (lit.)
蒸気圧
0.04 mm · 0.04 mm Hg ( 20 °C)
屈折率
20 · n20/D 1.551(lit.)
闪点
230 °F · >230 °F
化学的性質 · 1 件

化学的特性Benzenesulfonyl chloride is a colorless oily liquid with a pungent odor. Insoluble in water, soluble in ethanol and ether. Can react with ammonia, amine and alcohol to produce benzenesulfonamide and benzene sulfonate respectively. It is toxic, irritates skin, eyes and mucous membranes, corrosive, and can cause burns. Oral LD50 1960mg/kg in rats.

安全と法規制

GHS分類

GHS Classification · 6 件

Danger

H302 (98.7%): Harmful if swallowed [Warning Acute toxicity, oral];H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation];H317 (27.7%): May cause an allergic skin reaction [Warning Sensitization, Skin];H318 (27%): Causes serious eye damage [Danger Serious eye damage/eye irritation];H319 (14.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation];H332 (27%): Harmful if inhaled [Warning Acute toxicity, inhalation];H334 (27.7%): May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]

P233, P260, P261, P264, P264+P265, P270, P271, P272, P280, P284, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P321, P330, P333+P317, P337+P317, P342+P316, P362+P364, P363, P403, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 159 reports by companies from 17 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.;Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

危険有害性情報

Regulatory Information · 5 件

Chemical: Benzenesulfonyl chloride

Benzenesulfonyl chloride is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Benzenesulfonyl chloride are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 21-01-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13859

Benzenesulphonyl chloride: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

DOT LabelCorrosive
Fire Hazards · 2 件

Special Hazards of Combustion Products: May contain highly toxic and irritating hydrogen chloride and oxides of chlorine and sulfur.;Behavior in Fire: Cylinder may explode. Decomposes to produce highly toxic chlorine and sulfur compounds. Reacts with hot water to produce highly toxic and corrosive hydrochloric acid and benzenesulfonic acid. (USCG, 1999)

· Combustible material: may burn but does not ignite readily.;· Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.;· When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards.;· Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas (sewers, basements, tanks, etc.).;· Vapors may travel to source of ignition and flash back.;· Corrosives in contact with metals may evolve flammable hydrogen gas.;· Containers may explode when heated or if contaminated with water.

Health Hazards · 2 件

May be fatal if inhaled, swallowed or absorbed through skin. Contact may cause skin and eye burns. Irritating to eyes, skin and mucous membranes. INGESTION: May cause abdominal spasm and vomiting. (USCG, 1999)

· TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death.;· Contact with molten substance may cause severe burns to skin and eyes.;· Reaction with water or moist air may release toxic, corrosive or flammable gases.;· Reaction with water may generate much heat that will increase the concentration of fumes in the air.;· Fire will produce irritating, corrosive and/or toxic gases.;· Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination.

Hazards Summary · 2 件

Corrosive to skin; [Quick CPC] Liver damage has been reported in workers after skin exposure; liver injury also occurs in high-dose animal studies; [HSDB] Can cause irritation of the respiratory tract and at higher concentrations pulmonary edema; [NJ-HSFS] Can cause burns to skin and eyes; A skin, eye, and mucous membrane irritant; [CAMEO]

The major hazards encountered in the use and handling of benzenesulfonyl chloride stems from its toxicologic properties. Toxic by all routes (ie, inhalation, ingestion, and dermal contact), exposure to this colorless, oily liquid may occur from its manufacture and use as a catalyst, an intermediate in the production of phenols,amides, insecticides, miticides, and acaricides, and as a reagent for Friedel-Crafts sulfonation. Effects from exposure may include contact burns to the skin and eyes, and liver damage. In activities and situations where over-exposure may occur, wear a positive pressure self-contained breathing apparatus, and chemical protective clothing which has been specifically recommended by the shipper or manufacturer. If contact should occur, immediately irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes, and wash exposed skin thoroughly with soap and water. Remove contaminated clothing and shoes at the site. While benzenesulfonyl chloride does not ignite easily, it may burn with the production of poisonous gases. Runoff from fire control water may cause pollution. For fires involvin g benzenesulfonyl chloride, extinguish with dry chemical, CO2, water spray, fog, or regular foam. Small spills of this substance may be taken up with sand or other noncombustible absorbent and placed into containers for later disposal. Large spills should first be diked far ahead of the spill. Benzenesulfonyl chloride is a potential candidate for liquid injection or rotary kilnforms of incineration.

DOT ID and Guide2225 156

安全と保護具

Fire Fighting · 1 件

Excerpt from ERG Guide 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]:;Note: Most foams will react with the material and release corrosive/toxic gases. CAUTION: For Acetyl bromide (UN1716), use CO2 or dry chemical only.;SMALL FIRE: CO2, dry chemical, dry sand, alcohol-resistant foam.;LARGE FIRE: Water spray, fog or alcohol-resistant foam. FOR CHLOROSILANES, DO NOT USE WATER; use alcohol-resistant foam. If it can be done safely, move undamaged containers away from the area around the fire. Avoid aiming straight or solid streams directly onto the product.;FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

Accidental Release Measures · 2 件

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.;· Keep unauthorized personnel away.;· Stay upwind, uphill and/or upstream.;· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.;· All equipment used when handling the product must be grounded.;· Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.;· Stop leak if you can do it without risk.;· A vapor-suppressing foam may be used to reduce vapors.;· FOR CHLOROSILANES, use alcohol-resistant foam to reduce vapors.;· DO NOT GET WATER on spilled substance or inside containers.;· Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material.;· Prevent entry into waterways, sewers, basements or confined areas.;Small Spill;· Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain.;· Use clean, non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal.

First Aid · 2 件

INHALATION: Move victim to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.;EYES OR SKIN: Flush with running water for at least 15 min.; hold eyelids open if necessary. Wash skin with soap and water. Remove and isolate contaminated clothing and shoes at the site. Maintain normal body temperature and keep victim quiet. Keep victim under observation for delayed effects.;INGESTION: If unconscious or having convulsions, do nothing except keep victim warm. (USCG, 1999)

General First Aid:;· Call 911 or emergency medical service.;· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.;· Move victim to fresh air if it can be done safely.;· Administer oxygen if breathing is difficult.;· If victim is not breathing:;-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.;-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).;-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.;· Remove and isolate contaminated clothing and shoes.;· For minor skin contact, avoid spreading material on unaffected skin.;· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.;· For severe burns, immediate medical attention is required.;· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.;· Keep victim calm and warm.;· Keep victim under observation.;· For further assistance, contact your local Poison Control Center.;· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.;Specific First Aid:;· For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required.

Exposure Control and Personal Protection · 1 件

· Wear positive pressure self-contained breathing apparatus (SCBA).;· Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.;· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

Nonfire Spill Response · 1 件

Excerpt from ERG Guide 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]:;ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. A vapor-suppressing foam may be used to reduce vapors. FOR CHLOROSILANES, use alcohol-resistant foam to reduce vapors. DO NOT GET WATER on spilled substance or inside containers. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Prevent entry into waterways, sewers, basements or confined areas.;SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean, non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal. (ERG, 2024)

Disposal Methods · 2 件

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number U020, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.

A potential candidate for liquid injection incineration at a temperature range of 650 to 1,600 °C and a residence time of 0.1 to 2 seconds. A potential candidate for rotary kiln incineration at a temperature range of 820 to 1,600 °C and residence times of seconds for liquids and gases, and hours for solids.

毒性情報

Ecotoxicity ValuesLC50 Brown trout yearlings 3 mg/l/48 hr /Static bioassay/
Environmental Fate · 3 件

TERRESTRIAL FATE: If benzenesulfonyl chloride is released to soil, it will be expected to rapidly hydrolyze if the soil is moist, based upon a half-life of 5.1 min at 21 °C(SRC). Since it rapidly hydrolyzes, adsorption to and volatilization from moist soil are not expected to be significant processes, although no data specifically regarding the fate of benzenesulfonyl chloride in soil were located(SRC). Based upon an estimated vapor pressure of 0.068 mm Hg at 25 deg(2,SRC), volatilization from dry near-surface soil or other surfaces may be significant processes(SRC).

AQUATIC FATE: If benzenesulfonyl chloride is released to water, it will be expected to rapidly hydrolyze with a half-life of 5.1 min at 21 °C(1,SRC). Since it rapidly hydrolyzes, bioconcentration, volatilization, and adsorption to sediment and suspended solids are not expected to be significant processes(SRC). No data were located concerning biodegradation, but benzenesulfonyl chloride probably chemically hydrolyzes significantly faster than it biodegradates(SRC). Direct photolysis is not expected to be an important removal process in surface waters(2,SRC).

ATMOSPHERIC FATE: If benzenesulfonyl chloride is released to the atmosphere, it will be expected to exist almost entirely in the vapor phase(1) based upon an estimated vapor pressure of 0.068 mm Hg at 25 °C(2,SRC). It will be susceptible to photooxidation via vapor phase reaction with photochemically produced hydroxyl radicals. An atmospheric half-life of 7.9 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm has been calculated for this process based upon an estimated rate constant(3,SRC). Hydrolysis of benzenesulfonyl chloride in moist air may be significant based upon its rapid hydrolysis in aqueous solution(4,SRC). Direct photolysis is not expected to be an important removal process in the atmosphere(5,SRC).

Adverse Effects · 1 件

Occupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation.;Dermatotoxin - Skin burns.;Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

Soil Adsorption/MobilitySince benzenesulfonyl chloride rapidly hydrolyzes in water(1) and presumably in moist soil(SRC), adsorption to soil is not expected to be a significant process(SRC).
Human Toxicity Excerpts · 1 件

PERCUTANEOUS ABSORPTION WHICH CAN OCCUR ON MUCOUS MEMBRANES HAS BIOLOGICAL EFFECT ON SKIN & RESULTS IN REVERSIBLE TOXIC DAMAGE TO LIVER; 3 SUCH CASES ARE DESCRIBED. 2 PATIENTS EXPERIENCED VERY SEVERE SHOCK WHICH WAS BROUGHT UNDER CONTROL AFTER 1 TO 1.5 HR. POSSIBILITY THAT IMMEDIATE TYPE ALLERGIC REACTION OCCURS IS DISCUSSED.

Artificial Pollution Sources · 1 件

Benzenesulfony chloride may be released to the environmet as a result of its manufacture and use as a catalyst and as an intermediate in the production of phenol and other organic chemicals(1). Benzenesulfonyl chloride has been used in the Friedel-Crafts sulfonylation of benzene(2).

法規制情報

Regulatory Information · 5 件

Chemical: Benzenesulfonyl chloride

Benzenesulfonyl chloride is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Benzenesulfonyl chloride are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 21-01-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13859

Benzenesulphonyl chloride: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

RCRA Requirements · 1 件

U020; As stipulated in 40 CFR 261.33, when benzenesulfonyl chloride as a commercial chemical product or manufacturing chemical intermediate or an off-specification commercial chemical product or a manufacturing chemical intermediate, becomes a waste, it must be managed according to Federal and/or State hazardous waste regulations. Also defined as a hazardous waste is any residue, contaminated soil, water, or other debris resulting from the cleanup of a spill, into water or on dry land, of this waste. Generators of small quantities of this waste may qualify for partial exclusion from hazardous waste regulations (40 CFR 261.5).

TSCA Requirements · 1 件

Pursuant to section 8(d) of TSCA, EPA promulgated a model Health and Safety Data Reporting Rule. The section 8(d) model rule requires manufacturers, importers, and processors of listed chemical substances and mixtures to submit to EPA copies and lists of unpublished health and safety studies. Benzenesulfonyl chloride is included on this list.

CERCLA Reportable Quantities · 1 件

Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 100 lb or 45.4 kg. The toll free number of the NRC is (800) 424-8802; In the Washington D.C. metropolitan area (202) 426-2675. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b).

安全データ

F
21
wgk
1
tsca
TSCA listed
rtecs
DB8750000
ridadr
UN 2225
毒性
LD50 orl-rat: 1960 mg/kg MEPAAX 20,513,69

化学と産業

用途と製造

Uses · 4 件

Used as a chemical intermediate; [HSDB]

CHEM INT FOR BENZENE SULFONAMIDES, THIOPHENOL, GLYBUZOLE (HYPOGLYCEMIC AGENT), N-2-CHLOROETHYL AMIDES, BENZONITRILE; FOR ITS ESTERS-USEFUL AS INSECTICIDES, MITICIDES; FOR FENSON ACARICIDE (FORMER USE).

Benzenesulfonyl chloride is a reagent for Friedel-Crafts sulfonylation.

Benzenethiol is produced on a commercial scale by the red phosphorus reduction of benzenesulfonyl chloride.

U.S. Imports · 2 件

(1979) 1.96X10+8 GRAMS (PRINCPL CUSTMS DISTS)

(1981) 2.12X10+8 GRAMS (PRINCPL CUSTMS DISTS)

U.S. Production · 3 件

2023: 1,000,000 - <8,500,000 lb;2022: 1,000,000 - <8,500,000 lb;2021: 1,000,000 - <8,500,000 lb;2020: 1,000,000 - <8,500,000 lb

(1979) PROBABLY GREATER THAN 4.54X10+6 GRAMS

(1981) PROBABLY GREATER THAN 4.54X10+6 GRAMS

Industry UsesCorrosion inhibitor;Intermediate
Methods of Manufacturing · 2 件

... FROM BENZENE & CHLOROSULFONIC ACID OR FROM THE SODIUM SALT OF BENZENESULFONIC ACID & /PHOSPHORUS PENTACHLORIDE/ PCL5 OR /PHOSPHORUS OXYTRICHLORIDE/ POCL3.

REACTION OF BENZENESULFONIC ACID WITH PHOSPHORUS PENTACHLORIDE; REACTION OF SODIUM BENZENESULFONATE WITH PHOSPHORUS PENTACHLORIDE OR PHOSPHORUS OXYCHLORIDE; REACTION OF BENZENE WITH CHLOROSULFONIC ACID.

General Manufacturing Information · 2 件

Plastics Product Manufacturing;Oil and Gas Drilling, Extraction, and Support activities;All Other Chemical Product and Preparation Manufacturing

Benzenesulfonyl chloride: ACTIVE

応用分野 · 3 件

用途ベンゼンスルホニル化剤および第一、第二、第三アミン類のヒンスベルク(HINSBERG)分離に用る。

使用Benzenesulfonyl chloride reacts with Grignard reagents to form oxindoles from N-unsubstituted indoles. It is widely used to check the assay of thiamine in different food products. It is involved in the synthesis of alpha-disulfones, sulfonamides and sulfoante esters as precursor. It is a derivatization reagent for the determination of various amines in waste water and surface water at the sub-ppb level by gas chromatography-mass spectrometry. It is common reagent used in Hinsberg test for detection and distinguishing the type of amines as primary, secondary and tertiary amines.

一般的な説明A colorless to slightly yellow solid that melts at approximately 40°F. Very irritating to skin, eyes and mucous membranes. May emit toxic fumes when heated to high temperatures. Used to make dyes and other chemicals.

調製方法 · 2 件

The most convenient method for the production of benzenesulfonyl chlorides is the chlorosulfonation reaction of benzene or substituted benzene with chlorosulfuric acid. Sulfonation and formation of the sulfonyl chlo- ride take place in one reaction sequence:Ar-H+Cl-SO3H→ArSO3H+HClArSO3H+Cl-SO3H=ArSO2Cl+H2SO4Sulfone is formed in a side reaction of the chlorosulfonation. The amount of sulfone formation can be reduced by diluting with a solvent, by using a large excess of chlorosulfuric acid, or by adding sulfone-inhibiting substances, e.g., alkali metal and ammonium salts, acetic acid, phosphoric acid, dimethylformamide, or amidosulfuric acid.For industrial chlorosulfonation the chlorosulfuric acid is introduced into a cast-steel or enameled steel vessel and 10 – 25 mol% of the aromatic compound is stirred in at 25 – 30 ℃, whereupon sulfonation of the aromatic compound and HCl formation occur. The formation of sulfonyl chloride is initiated by heating the reactants to 50 – 80 ℃. The reaction is exothermic. The sulfonyl chloride is isolated by draining the reaction mass onto water and simultaneous cooling. Excess chlorosulfuric acid is decomposed, and the sulfonyl chloride either precipitates or separates as an organic liquid phase. The quality of the chlorosulfuric acid affects the yield.Other chlorinating agents, such as phosgene, thionyl chloride, sulfuryl chloride, or phosphorus pentachloride, can be used instead of chlorosulfu- ricacid. When thionyl chloride is used the sulfonyl chloride is obtained from the sulfonic acid in high yield and without formation of sulfuric acid.

純化方法Distil the sulfonyl chloride, then treat it with 3mole % each of toluene and AlCl3, and allow it to stand overnight. The sulfonyl chloride is distilled off at 1mm pressure and then carefully fractionally distilled at 10mm in an all-glass column. [Adams & Marvel Org Synth Coll Vol I 84 1941, Jensen & Brown J Am Chem Soc 80 4042 1958, Beilstein 11 IV 49.] It is TOXIC.

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