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163511

Sigma-Aldrich

Hydroxymethanesulfinic acid monosodium salt dihydrate

Synonym(s):

Sodium formaldehydesulfoxylate

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About This Item

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.)

functional group

sulfinic acid

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

163511-VAR:
163511-BULK:
163511-1KG:
163511-25KG:
163511-100G:

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Certificates of Analysis (COA)

Lot/Batch Number
STBK4085
STBK0824
STBJ9065
STBJ4495
STBJ4494

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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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