Caustic Soda

Property Description
Chemical Formula NaOH
Common Names Caustic soda, lye, sodium hydroxide
Appearance Solid form: White, opaque flakes or pellets. Liquid form: Clear, colorless liquid.
Chemical Structure Caustic soda is a strong base, and it is an ionic compound consisting of sodium ions (Na+) and hydroxide ions (OH-).
Concentration Caustic soda solutions are available in different concentrations, typically ranging from 10% to 50% by weight. The solid form is nearly 100% pure.
pH A 50% solution of caustic soda has a pH of about 14, making it highly alkaline.
Solubility Caustic soda is highly soluble in water and forms a strong alkaline solution. It is also soluble in ethanol and methanol.
Chemical Reactivity – It is a powerful alkaline substance and is used for various chemical processes, including saponification and neutralization.
– It can react with various materials, including acids, to form water and salt (neutralization reaction).
– It can be used for cleaning and degreasing due to its ability to dissolve grease and fats.
– It is employed in the production of various chemicals, such as sodium salts and surfactants.
– Used in water treatment to adjust pH levels and remove impurities.
Safety Caustic soda is highly corrosive and can cause severe chemical burns on contact with skin or eyes. Protective equipment and precautions are essential when handling it.
Storage It should be stored in a cool, dry place, away from moisture and incompatible substances. Proper labeling and secure containment are crucial.