Merck
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71932

Sigma-Aldrich

Sodium metabisulfite

tested according to Ph. Eur.

Synonym(s):
Sodium disulfite, Sodium pyrosulfite, Natrii metabisulfis
Linear Formula:
Na2S2O5
CAS Number:
Molecular Weight:
190.11
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

Agency

USP/NF
tested according to Ph. Eur.

assay

>97.5%

form

powder

mp

>300 °C (lit.)

SMILES string

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

InChI

1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

InChI key

HRZFUMHJMZEROT-UHFFFAOYSA-L

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Related Categories

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Supplementary Hazards

Storage Class Code

13 - Non 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

Certificate of Analysis

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Certificate of Origin

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