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163511

Sigma-Aldrich

Hydroxymethanesulfinic acid monosodium salt dihydrate

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Synonym(s):
Sodium formaldehydesulfoxylate
Linear Formula:
HOCH2SO2Na · 2H2O
CAS Number:
6035-47-8
Molecular Weight:
154.12
EC Number:
205-739-4
MDL number:
MFCD00150598
UNSPSC Code:
12352100
PubChem Substance ID:
24849753
NACRES:
NA.22

form

powder

Quality Level

100

mp

64-68 °C (lit.)

solubility

alcohol: slightly soluble(lit.)
benzene: slightly soluble(lit.)
chloroform: slightly soluble(lit.)
diethyl ether: slightly soluble(lit.)
water: freely soluble(lit.)

SMILES string

[Na+].[H]O[H].[H]O[H].OCS([O-])=O

InChI

1S/CH4O3S.Na.2H2O/c2-1-5(3)4;;;/h2H,1H2,(H,3,4);;2*1H2/q;+1;;/p-1

InChI key

UCWBKJOCRGQBNW-UHFFFAOYSA-M

Related Categories

General description

Oxidation reation of hydroxymethanesulfinic acid with chlorite has been studied in the pH range 4-8. It is a sulfur-containing reducing agent.

Pictograms

Health hazard
GHS08

Signal Word

Warning

Hazard Statements

H341,H361d

Hazard Classifications

Muta. 2 - Repr. 2

Supplementary Hazards

EUH032

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Recent trends in the chemistry of sulfur-containing reducing agents.
Makarov, SV.
Russ. Chem. Rev., 70(10), 885-895 (2001)
Oxyhalogen-Sulfur Chemistry: Oxidation of Hydroxymethanesulfinic Acid by Chlorite 1.
Salem MA, et al.
The Journal of Physical Chemistry, 100(22), 9377-9384 (1996)
S V Makarov et al.
Archives of biochemistry and biophysics, 367(2), 289-296 (1999-07-09)
Sodium hydroxymethanesulfinate, (HOCH2SO2Na, HMS) is relatively stable in aqueous alkaline environments, but rapidly decomposes in acidic medium to give a variety of products that include sulfur dioxide. A detailed kinetic and mechanistic study of the decomposition of HMS in slightly

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