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Aluminium Silicate
Aluminium Stearate
Ammonium Chloride
Barytes-Micronised
Calcite-Micronised
Calcium Carbonate
Calcium Chloride
Calcium Hydroxide
Calcium Stearate
Calcium Sulphate
China Clay
Ferric Chloride
Glue Powder
Hydrated Lime
Hydrated Calcium Silicate
Kaolin
Magnesium Carbonate
Magnasium Chloride
Magnasiun Stearate
Magnasium Sulphate
Pigments
Precipitated Silica
Sodium Bi - Sulphite
Sodium Meta - Bi - Sulphite
Sodium Sulphite
Stearic Acid
Talc Powder
Zinc Carbonate
Zinc Chloride
Zinc Dust
Zinc Oxide
Zinc Stearate
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TYPICAL PHYSIOCHEMICAL PROPERTIES OF SODIUM SULPHITE
GRADES
Property
Technical Grade
Photo Grade
Sodium Sulphite WT %
94 Min
98.5 Min
Sodium Sulphate WT %
3 Max
1.5 Max
Sodium Chloride WT %
1 Max
0.05 Max
Sodium Carbonate WT %
0.1 Max
0.1 Max
Moisture %
0.05 Max
0.05 Max
Insoluble
0.1 Max
0.1 Max
Iron (Fe) PPM
20 Max
5 Max
Heavy Metals (Pb) PPM
10 Max
10 Max
Selenium PPM
--
30 Max
Arsenic PPM
--
3 Max
PH
6-7