Caustic Soda Flakes

Sodium hydroxide (NaOH), also called caustic soda or lye, a corrosive white crystalline solid that contains the Na+ (sodium) cation and the OH− (hydroxide) anion. It readily absorbs moisture until it dissolves. Sodium hydroxide is the most widely used industrial alkali and is often used in drain and oven cleaners.
It is highly corrosive to animal and vegetable tissue. The alkaline solutions it forms when dissolved in water neutralize acids in various commercial processes. In petroleum refining, it removes sulfuric and organic acids. In soapmaking, it acts on natural fats or oils, such as tallow or vegetable oil, to produce sodium fatty acid salt (soap) and glycerin (or glycerol); this saponification reaction is the basis for all soapmaking. In papermaking, sodium hydroxide is used to break down wood into pulp. Solutions of NaOH are used in the treatment of cellulose and in the manufacture of many chemicals.

Features and Advantages:

  • It is a white solid which has a melting point of 591K
  • It is a stable compound.
  • NaOH is bitter and has a soapy feel to it.
  • It is highly soluble in water and moderately soluble in alcohol.
  • Sodium hydroxide is strongly alkaline in nature.


  • Textiles processing
  • Soap and detergent
  • Paper and pulp industry
  • Drain pipe cleaner
  • Ynblocking drains
  • Removing built up grease
  • from ovens

Product specification

Sodium Hydroxide NaOH (wet)

98% wt. Min

Sodium Hydroxide NaOH (dry)

98.5% wt. Min


0.01% wt. Max


0.5 % wt. Max


0.01% wt. Max


5 ppm wt. Max

Ni pick up

3 ppm wt. Max


100 ppm wt. Max


Expected Value < 50 ppm wt



Heavy Metal (as Pb)

Less than 10 ppm


0.8 mm <rang< 1 mm

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