Sodium metabisulfite ≥97.0-100.0% (by iodometry), EMPROVE® ESSENTIAL Ph. Eur., BP, JP, NF, E223, SAFC®

Supplier: MilliporeSigma
Danger

Synonyms: Sodium pyrosulfite, Disodium disulphite, Sodium disulfite, di-Sodium disulphite, di-Sodium disulfite, Sodium pyrosulphite, Disodiumdisulphite, Disodium disulfite, Disodiumdisulfite, Sodium disulphite

1.06357.9029 1.06357.5000
EM1.06357.9029EA 1102.17 USD
EM1.06357.9029 EM1.06357.5000
Sodium metabisulfite ≥97.0-100.0% (by iodometry), EMPROVE® ESSENTIAL Ph. Eur., BP, JP, NF, E223, SAFC®
Sodium metabisulphite

Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*).
Conforms to the purity criteria on food additives according to the current European Commission Regulation.


Certifications: Conforms to Ph. Eur., BP, JP, NF, E223.

Formula: Na₂S₂O₅
MW: 190.11 g/mol
Melting Pt: 150 °C
Density: 1.48 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00167602
CAS Number: 7681-57-4
EINECS: 231-673-0
REACH: 01-2119531326-45
Merck Index: 12,08784
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Specification Test Results

Assay (Iodometric) 97.0 - 100.0%
Assay (Iodometric, SO₂) 65.4 - 67.4%
Identity Passes Test
Appearance of solution Passes Test
pH-value (5%; water) 3.5 - 5.0
Chloride (Cl) ≤0.01%
Heavy metals (as Pb) ≤0.001%
Thiosulfate (S₂O₃) ≤0.05%
As (Arsenic) ≤0.0002%
Fe (Iron) ≤0.0005%
Hg (Mercury) ≤0.0001%
Pb (Lead) ≤0.0002%
Se (Selenium) ≤0.0003%
Residual Solvents (Ph. Eur./USP/ICH) Excluded by the Manufacturing Process

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