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
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