|
Tests
|
Unit
|
Specifications
|
On Absolute Basis
Sodium Hydroxide [as NaOH]
|
% w / w |
Min. 47.50
|
On Dry Basis
Sodium Hydroxide [as NaOH]
|
% w / w
|
Min. 99.50
|
Sodium Carbonate
[as Na2CO3]
|
% w / w
|
Max. 00.40
|
| Chlorides [as NaCl]
|
% w / w
|
Max. 00.05
|
| Sulphates [as Na2O4
|
% w / w
|
Max. 00.02
|
| Silicates [as SiO2]
|
% w / w
|
Max. 00.01
|
| Iron [as Fe]
|
ppm
|
Max. 00.01
|
| Copper as Cu]
|
ppm
|
Max. 00.01
|
| Manganese [ as Mn]
|
ppm
|
Max. 00.01
|
Chlorates & Per Chlorate
[ as NaClO3]
|
ppm
|
Max. 00.01
|
| Matter insoluble in Water
|
% w / w
|
Max. 00.01
|
Transmittance at 500 nm
(CSL-STH-01)
|
%
|
Max. 00.01
|
| Test method as per IS-252 |
