Caustic Soda Liquid

Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with formula NaOH. It is a white solid ionic compound consisting of sodium cations Na+
and hydroxide anions OH.
Sodium hydroxide is a highly caustic base and alkali, that decomposes proteins at ordinary ambient temperatures and may cause severe chemical burns. It is highly soluble in water and readily absorbs moisture and carbon dioxide from the air. It forms a series of hydrates NaOH·nH2O. The monohydrate sodium hydroxide (NaOH·H2O) crystallizes from water solutions between 12.3 and 61.8 °C.
The commercially available “sodium hydroxide” is often this monohydrate, and published data may refer to it instead of the anhydrous compound.
Sodium hydroxide is used in many industries in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents and as a drain cleaner.


Physical and Chemical properties ISIRI Compliant Range Product
Purity of Sodium Hydroxide (NAOH)_%W Min48 Min48 ISIRI 364
Carbonate as Na2CO3_%W Max 0.5 Max 0.3 ISIRI 364
Chloride as NaCI_%W Max 0.03 Max 0.015 ISIRI 364
Sulfate as Na2SO4_%W Max 0.007 Max 0.004 ISIRI 364
Silicate as SIO2_%W Max 0.01 Max 0.005 ISIRI 364
Fe_Mg/Kg Max 10 Max 7 ISIRI 364
Insoluble in Water _%W Max 0.05 0 ISIRI 364
Aluminum as Al2O3_mg/kg Max 10 Max 10 ISIRI 364
Heavy Metals as Pv_mg/kg Max 10 Max 10 ISIRI 364
Mercury as Hg_mg/kg Max 0.1 Max 0.1 ISIRI 364
Arsenic as As2O3_mg/kg Max 1 Max 1 ISIRI 364
Appearance White Color .Free
of visible
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