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Merck
CN

27-0520

Rongalit® dihydrate

CP

Synonym(s):

Sodium hydroxymethanesulfinate hydrate, Hydroxymethanesulfinic acid sodium salt, Rongalit®, Sodium formaldehyde sulfoxylate hydrate

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About This Item

Linear Formula:
HOCH2SO2Na·xH2O
CAS Number:
149-44-0
Molecular Weight:
118.09 (anhydrous basis)
EC Number:
205-739-4
UNSPSC Code:
12352300
PubChem Substance ID:
329752949
Beilstein/REAXYS Number:
3630814
MDL number:
MFCD00150599
Grade:
CP

Key Documents

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Product Name

Rongalit® dihydrate, CP

InChI

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

InChI key

ZKODLPLYXXUCHB-UHFFFAOYSA-M

SMILES string

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

grade

CP

availability

available only in Japan

dilution

(for analytical testing)

mp

~120 °C (dec.)

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Legal Information

Rongalit is a registered trademark of BASF SE

pictograms

Health hazard
GHS08

signalword

Warning

Hazard Classifications

Muta. 2 - Repr. 2

supp_hazards

EUH031

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
U8369
U5637
U2521
U2445
U1381

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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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