Sr. No.CharacteristicsRequirement to
Grade AGrade B
01AppearanceAnhydrous, white powder, odourless, bitter saline testAnhydrous, white powder, odourless, bitter saline test
02SolubilitySoluble in water and glycerol, insoluble in alcoholSoluble in water and glycerol, insoluble in alcohol
03Density1.3851.385
04Sodium Sulphate (as Na2SO4) per cent by mass (on dry basis)99.0 % min.98.0 % min.
05Matter insoluble in water per cent by mass0.25 % max.0.50 % max.
06Chloride (as NaCl) per cent by mass0.30 % max.2.00 % max.
07Iron (as Fe) per cent by mass0.002 % max.0.002 % max.
08Loss on drying per cent by mass0.5 % max.1.0 % max.
09pH of 10 % solution7.0 to 7.57.5 to 8.0
Note :- The product can also be supplied as per specifications provided by the client’s

Packing & Marking :- As per client’s requirements.