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512-35-6

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512-35-6 Structure

512-35-6 Structure
IdentificationBack Directory
[Name]

BENZENESULFONIC ANHYDRIDE
[CAS]

512-35-6
[Synonyms]

BENZENESULFONIC ANHYDRIDE
Bis(benzenesulfonic)anhydride
Benzenesulfonic Anhydride >
Benzenesulfonic acid anhydride
Benzenesulfonic acid, 1,1'-anhydride
[Molecular Formula]

C12H10O5S2
[MDL Number]

MFCD00054601
[MOL File]

512-35-6.mol
[Molecular Weight]

298.33
Chemical PropertiesBack Directory
[Melting point ]

60-85° (softens about 55°); mp 88-91° (softens about 75°)
[Boiling point ]

463.7±28.0 °C(Predicted)
[density ]

1.439±0.06 g/cm3(Predicted)
[form ]

powder to crystal
[color ]

White to Light yellow to Light orange
[Merck ]

14,1071
Safety DataBack Directory
[Symbol(GHS) ]

Corrosion (GHS05)
GHS05
[Signal word ]

Danger
[Hazard statements ]

H290-H314
[Precautionary statements ]

P234-P260-P264-P280-P301+P330+P331+P310-P303+P361+P353+P310+P363-P304+P340+P310-P305+P351+P338+P310-P390-P405-P406-P501
[RIDADR ]

3261
[HS Code ]

2904.10.3700
[HazardClass ]

8
[PackingGroup ]

III
Hazard InformationBack Directory
[Uses]

In Friedel-Crafts sulfone synthesis; in other sulfonylation reactions.
[Purification Methods]

Crystallise the anhydride from Et2O (m 88.5-91.5o), CHCl3 or chlorobenzene (m 90-92o). Store it dry. [Field J Am Chem Soc 74 394 1952, Beilstein 11 H 3, 11 I 11, 11 II 23, 11 III 50, 11 IV 50.]
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