Sodium metabisulphite ≥97.0-100.0% (by iodometry), EMPROVE® ESSENTIAL NF, JP, Ph. Eur., BP, E223, extra pure suitable for use as excipient, SAFC®

Supplier: MERCK PRODUCTION CHEMICALS
Danger

Synonyms: Disodium disulphite, di-Sodium disulphite, Sodium pyrosulphite, Disodiumdisulphite, Sodium disulphite

1.06357.5000 1.06357.9029
1.06357.5000EA 288 EUR
1.06357.5000 1.06357.9029
Sodium metabisulphite ≥97.0-100.0% (by iodometry), EMPROVE® ESSENTIAL NF, JP, Ph. Eur., BP, E223, extra pure suitable for use as excipient, 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
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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