ChemicalBook >>4,4'-Bis(chlorosulfonyl)diphenyl ether>>4,4'-Oxybis(benzene-1-sulphonyl) dichloride(121-63-1)

4,4'-Oxybis(benzene-1-sulphonyl) dichloride(121-63-1)

4,4'-Oxybis(benzene-1-sulphonyl) dichloride(121-63-1)
Product IdentificationBack to Contents
【Product Name】

4,4'-Oxybis(benzene-1-sulphonyl) dichloride

4-(4-Chlorosulfonylphenoxy)benzenesulfonyl chloride
Oxybis(benzenesulfonyl chloride)


【Molecular Weight】



【Beilstein Reference】

Physical and Chemical PropertiesBack to Contents
【Melting Point】

【Partition Coefficient】


Major uses include chemical intermediate, eg, for polyarylsulfones, chemical intermediate for its dihydrazide deriv, a blowing agent.
First Aid MeasuresBack to Contents

Seek medical assistance.

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.

Immediately flush with running water for at least 20 minutes.
Hazards IdentificationBack to Contents

See Inhalation.

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.

See Inhalation.

Contact with metals may evolve flammable hydrogen gas.
【EC Risk Phrase】

R 34
【EC Safety Phrase】

S 26 36/37/39 45
【UN (DOT)】

Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Wear appropriate protective gloves, clothing and goggles.

Wear positive pressure self-contained breathing apparatus (SCBA).
Fire Fighting MeasuresBack to Contents
【Fire Fighting】

Extinguish using agent most appropriate for surrounding fire.
【Fire Potential】

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Transport InformationBack to Contents
【UN Number】

Stability and ReactivityBack to Contents
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
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