Sodium Sulphate

Sodium sulfate is formed as a by-product during the synthesis of hydrogen sulfide gas. It can also be produced by heating sodium chloride (common salt) and concentrated sulfuric acid in a furnace.

Specification

Sr. No	Parameters	Units	Norms	Test Method
Material Code Specification			CHSSREG0050S/CHSSREG1000S Sodium Sulphate
A	Physical Propwerties
1	Anhydrous, Free Flowing	-	Yes	IS 255 : 1982
2	White Powder	-	Yes	IS 255 : 1982
3	Visible Impurities	-	No	IS 255 : 1982
B	Physical Propwerties
1	Whiteness	Berger	Min 70	Grasim
2	Sodium Sulphate(as Na2SO4)	%	Min 99.0	IS 255 : 1982
3	Matter Insoluble in Water	%	Max 0.25	IS 255 : 1982
4	Chloride as NaCl	%	Max 010	IS 255 : 1982
5	Iron as Fe	PPM	Max 25	IS 255 : 1982
6	Loss on Ignition at 600°C	%	Max 0.20	Grasim
7	pH of 10% Solution in D/W	-	6 to 10	IS 255 : 1982
8	Ca + Mg as Ca	PPM	Max 750	Grasim
9	Alkanity as NaOH	%	Max 0.10	Grasim
10	Iron, Aluminium as R2O3	%	Max 0.05	IS 255 : 1982
11	Zn as ZnSO4	%	Max 0.25	Grasim
12	Moisture	%	Max 0.2	IS 255 : 1982
13	Bulk Density	gm / ml	1.2 -1.6	Grasim
14	Sieve test BS + 60 mesh BS + 100 mesh BS + 150 mesh BS + 240 mesh	%	0.10 3.50 50.0 85.0	Grasim

Applications / Uses :

Sodium sulfate is a neutral salt that is non-toxic, highly soluble in water, and insoluble in alcohol. It is chemically very stable and unreactive toward most oxidizing or reducing agents at normal temperatures.