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1.06652.1000 SODIUM SULFITE MERCK
Description
Catalogue Number 106652
Product Information
CAS number 7757-83-7
EC number 231-821-4
Grade Ph Eur,BP,NF,E 221
Hill Formula Na₂O₃S
Chemical formula Na₂SO₃
Molar Mass 126.04 g/mol
HS Code 2832 10 00
Quality Level MQ500
Physicochemical Information
Density 2.630 g/cm3
Melting Point >500 °C (decomposition)
pH value 9.0 - 10.5 (126 g/l, H₂O, 25 °C)
Bulk density 1480 kg/m3
Solubility 220 g/l
Toxicological Information
LD 50 oral LD50 Rat 2610 mg/kg
Safety Information according to GHS
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly hazardous to water
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.
Storage and Shipping Information
Storage Store at +15°C to +25°C.
Transport Information
Declaration (railroad and road) ADR, RID Kein Gefahrgut
Declaration (transport by air) IATA-DGR No Dangerous Good
Declaration (transport by sea) IMDG-Code No Dangerous Good
Specifications
Assay (iodometric) 95.0 - 100.5 %
Assay (SO₂) ≥ 48.0 %
Identity passes test
Appearance of solution passes test
Thiosulfate (S₂O₃) ≤ 0.05 %
Heavy metals (as Pb) ≤ 0.0005 %
As (Arsenic) ≤ 0.0002 %
Hg (Mercury) ≤ 0.0001 %
Fe (Iron) ≤ 0.0005 %
Pb (Lead) ≤ 0.0002 %
Se (Selenium) ≤ 0.00025 %
Zn (Zinc) ≤ 0.0025 %
Residual solvents (Ph Eur/USP/ICH) excluded by the manufacturing process
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.
Conforms to Ph Eur, BP, NF, E221
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