Skip to Content
Merck
All Photos(3)

Documents

163511

Sigma-Aldrich

Hydroxymethanesulfinic acid monosodium salt dihydrate

Synonym(s):

Sodium formaldehydesulfoxylate

Sign Into View Organizational & Contract Pricing
All Photos(3)

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.)

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Oxyhalogen-Sulfur Chemistry: Oxidation of Hydroxymethanesulfinic Acid by Chlorite 1.
Salem MA, et al.
The Journal of Physical Chemistry, 100(22), 9377-9384 (1996)
Recent trends in the chemistry of sulfur-containing reducing agents.
Makarov, SV.
Russ. Chem. Rev., 70(10), 885-895 (2001)
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

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service