Product Specifications

Caustic Soda Flakes will confirm to IS 252:1991 BIS Specifications for Caustic Soda Pure (Rayon Grade)

Sr
No
Characterstics Requirement as per IS 252 : 1991
(On Dry Basis)
Actual Average Quality (On Dry Basis)
1 Sodium Hydroxide (as NaOH) Percent by mass, min. 99.5% 99.5%
2 Sodium Carbonate (as Na2CO3) Percent
by mass, max.
0.40 0.40
3 Chlorides (as NaCl) ppm, max. 1000 100
4 Sulphates (as Na2SO4) ppm, max. 1000 N.D.
5 Silicates (as SiO2) ppm, max. 200 20
6 Iron (as Fe) ppm, max. 20 10
7 Copper (as Cu) ppm, max. 2 0.5
8 Manganese (as Mn) ppm, max. 1 0.5
9 Chlorates and Perchlorates (as NaClO3) ppm, max 10 10
10 Matter Insoluble in water Percent by mass, max. 0.05 Nil

Note : N.D.= Not Detectable