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Sodium disulfite (sodium metabisulfite), 100.0%, EMPROVE™ ESSENTIAL Ph Eur, BP, JP, NF, E 223, MilliporeSigma™

Catalog No. M1063575000 Shop All MilliporeSigma Products
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M1063575000 5 kg
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Catalog No. M1063575000 Supplier MilliporeSigma Supplier No. 1063575000
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Chemical Identifiers

CAS 7681-57-4
Molecular Formula Na2O5S2
Molecular Weight (g/mol) 190.11
Synonym Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite

Specifications

Melting Point 150°C (decomposition)
pH 3.5 to 5 (50 g/L, H2O, 20°C)
Quantity 5 kg
Assay Percent Range Assay (iodometric): 97.0 to 100.0%; Assay (iodometric, SO2): 65.4 to 67.4%
Solubility Information 650 g/L
Packaging Plastic Bottle
Density 2.36 g/cm3 (at 20°C); Bulk Density: 1000 to 1200 kg/m3

Safety and Handling

Recommended Storage Store at 5 to 30°C
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