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SODIUM SULPHITE ANHYDROUS Extra Pure

Confirming to BP
disodium sulphite, Sulfurous acid disodium salt

COAs

Packings

500 g (00500)

1000 g (01000)

5000 g (05000)

25 Kg (0025K)

50 Kg (0050K)

1PW1200500 1PW1200750 1PW1206500 1PDL00030K 1PDLP0065K
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Article No. 06023 Grade Extra Pure
Purity 95% CAS No. 7757-83-7
Molecular Formula Na2SO3 Molecular Weight 126.04
H.S. Code 2832.1090 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White crystalline
Odour Odorless pH value 9.0 - 10.5 at 126 g/l at 25 °C
Melting point/ Freezing point [°C] 500°C Density [g/cm3] 2.63
Solubility in water [% weight] 126 g/l at 20 °C - completely soluble

Specifications

Appearance White crystalline powder Assay (iodometric) 95 - 100.5%
SO2 Min 48% Identity Passes test
Appearance of solution Passes test Thiosulphate (S2O3) Max 0.04%
Arsenic (As) Max 0.0002% Heavy metal (as Pb) Max 0.001%
Iron (Fe) Max 0.001% Copper (Cu) Max 0.0005%
Selenium (Se) Max 0.001% Zinc (Zn) Max 0.0025%
Revision Date: 26-Dec-2013

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