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Safety Information

71530

Sigma-Aldrich

Sodium hydroxymethanesulfinate dihydrate

≥98.0% (RT)

Synonym(s):

Rongalite, Sodium formaldehydesulfoxylate

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About This Item

Empirical Formula (Hill Notation):
CH3NaO3S · 2H2O
CAS Number:
6035-47-8
Molecular Weight:
154.12
EC Number:
205-739-4
UNSPSC Code:
12352100
PubChem Substance ID:
57652317
NACRES:
NA.22

Quality Level

200

Assay

≥98.0% (RT)

form

powder

pH

9.5-10.5

solubility

H2O: 50 mg/mL, clear, colorless

functional group

sulfinic acid

SMILES string

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

InChI

1S/CH3O3S.Na.2H2O/c2-1-5(3)4;;;/h1H2,(H,3,4);;2*1H2/q-1;+1;;

InChI key

VJWVWUHJLZEHOU-UHFFFAOYSA-N

Application

Sodium hydroxymethanesulfinate dihydrate is a versatile reagent that can be used for a wide range of organic transformations such as:
  • A SO2-2anion source for the preparation of sulfones and sultines.
  • Debromination of vicinal dibromoalkanes.
  • Reductive dehalogenation of aldehydes and ketones.

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

71530-VAR:
71530-250G:
71530-BULK:
71530-5KG:
71530-1KG:

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG0623
BCCC5669
BCBW7241
BCBV5469
BCBT0495

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Rongalite: a useful green reagent in organic synthesis.
Kotha S, et al.
Chemical Reviews, 112(3), 1650-1680 (2011)
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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