Other Names: Caustic soda; sodium hydrate; white caustic; caustic soda flakes; flake caustic; caustic soda solid; caustic soda pearls; solid caustic soda;Food Additives Sodium Hydroxide; Caustic soda flake; Solid Sodium hydroxide; Caustic Soda; Sodium Hydrate; Liquid CS
HS No.: 2915211900
Hazard Class: 8
Grade Standard: Industrial Grade
Sodium hydroxide, also known as lye and caustic soda,[1][2] is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na+,and hydroxide anions OH−.
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For the manufacture of biodiesel, sodium hydroxide is used as a catalyst for the transesterification of methanol and triglycerides. This only works with anhydrous sodium hydroxide, because combined with water the fat would turn into soap, which would be tainted with methanol. NaOH is used more often than potassium hydroxide because it is cheaper and a smaller quantity is needed.
Food uses of sodium hydroxide include washing or chemical peeling of fruits and vegetables, chocolate and cocoa processing, caramel coloring production, poultry scalding, soft drink processing, and thickening ice cream.[39] Olives are often soaked in sodium hydroxide for softening; Pretzels and German lye rolls are glazed with a sodium hydroxide solution before baking to make them crisp.
Careful storage is needed when handling sodium hydroxide for use, especially bulk volumes. Following proper NaOH storage guidelines and maintaining worker/environment safety is always recommended given the chemical's burn hazard.
