BENZENESULFINIC ACID

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1 Gram	Negotiable

1 Gram

Negotiable

Min.Order :1 Gram
Purity: 98% purity
Payment Terms : T/T,Other

Keywords

BENZENESULFINIC ACID 618-41-7 98% purity

Quick Details

Appearance:Solid
Application:intermediate
PackAge:According to the need of packing
ProductionCapacity:100|Kilogram|Month
Storage:Inert atmosphere,2-8°C
Transportation:air,sea,courier

Superiority:

Product Name:   BENZENESULFINIC ACID
Synonyms:   benzenesulphinicacid;SODIUMBENZENESULPHINICACID;BENZENESULFINIC ACID;Phenylsulfinic acid
CAS:   618-41-7
MF:   C6H6O2S
MW:   142.18
EINECS:   210-548-4
Product Categories:   Industrial/Fine Chemicals;fine chemicals
Mol File:   618-41-7.mol

Details:

Melting point    84°C
Boiling point    111.5°C (estimate)
density    1.365 (estimate)
refractive index    1.5300 (estimate)
storage temp.    Inert atmosphere,2-8°C
form    solid
pka   1.3(at 20℃)

Synthesis Reference(s) Chemical and Pharmaceutical Bulletin, 35, p. 1770, 1987 DOI: 10.1248/cpb.35.1770
Purification Methods The acid is purified by dissolving the Na salt in H2O, acidifying to Congo Red paper with HCl and adding a concentrated solution of FeCl3 whereby Fe sulfinate precipitates. Collect the salt, wash it with a little H2O, drain, suspend it in H2O and add a slight excess of 1.5M aqueous NaOH. The Fe(OH)3 precipitates, it is filtered off, the sulfinic acid in the aqueous solution is extracted with Et2O, the extract is dried (Na2SO4) and evaporated to give colourless crystals of benzenesulfinic acid m 84o which are stored under N2 in the dark, as it slowly oxidises in air to the sulfonic acid. [Beilstein 11 H 2, 11 I 3, 11 II 3, 11 III 3, 11 IV 3.]

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