We are offering caustic soda, sodium hydroxide etc. naoh, cas no: 1310-73-2, hs code: 28151100caustic soda has many uses in many industries. It is commonly used as a strong chemical base in the water treatment industries, textile industries, soaps and detergents. we have caustic soda flakes or pearls with purity 96%, 98% or 99%. Caustic soda is white solid in appearance.