SODIUM SULPHITE LR (ANHYDROUS)

SODIUM SULPHITE LR (ANHYDROUS)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
S0192705000 LR 95% 7757-83-7 Na2SO3 126.04 2832.1090
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

Viscosity at 40°C [mm2/s]

126 g/l at 20 °C - completely soluble

Specifications

Appearance:

 White crystalline powder

Heavy metal (as Pb):

 Max 0.001%

Arsenic (As):

 Max 0.0002%

Iron (Fe):

 Max 0.001%

Copper (Cu):

 Max 0.0005%

Identity:

 Passes test

Appearance of solution:

 Passes test

Assay (iodometric):

 95 - 100.5%

Zinc (Zn):

 Max 0.0025%

SO2:

 Min 48%

Thiosulphate (S2O3):

 Max 0.04%

Selenium (Se):

 Max 0.001%
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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