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Caustic Soda Flakes

Caustic Soda Flakes


Caustic soda flakes is a solid form of sodium hydroxide. Caustic soda flakes manufactured by Paragroup ais. are free from foreign matter, dirt or other visible impurities. The product is widely used in the textile, soaps and detergents, pulp and paper industries and in alumina refineries.

  • IUPAC Name: Sodium hydroxide
  • CAS Number: 1310 – 73 – 2
  • Formula: NaOH
  • Molecular Weight:39.99 g/mol
  • HS Code: 281511



Using Areas

Caustic soda flakes is majorly used in textiles processing, soap and detergent, paper and pulp industry. It is also used as an intermediate for wide variety of organic chemicals such as dyes, pigments, agrochemicals and variety of inorganic chemicals such as sulphites, phosphites etc.


Sodium Hydroxide     [as NaOH] % w / w Min. 97.00
Sodium Carbonate   [as Na2CO3] % w / w Max. 00.40
Chlorides    [as Cl] % w / w Max. 00.03
Sulphates    [as SO4] % w / w Max. 00.03
Silicates   [as SiO2] % w / w Max. 00.02
Iron     [as Fe] ppm Max. 20.00
Copper     [as Cu] ppm Max. 02.00
Nickel     [as Ni] ppm Max. 02.00
Chlorates & Per Chlorate [NaClO3] ppm Max. 10.00
*Matter insoluble in Water. % w / w Max. 00.05
Weight variation    [in each bag] gm + 0 to 200
Sodium Hydroxide     [as NaOH] % w / w Min. 99.50