Sodium hydroxide Alias: caustic soda Molecular formula: naoh Cas no. : 1310-73-2 Hs: 2815110000 Hazard class: 8 Purity: 1.Caustic soda solid : 99%min, 96%min 2.Caustic soda liquid : 32%, 50% Appearance: 1.Colorless to white, odorless solid (flakes, beads, granular form) 2.Transparent colorless liquid Grade standard: industrial grade Quality standard: Standard: national standard gb 209-2006 Manufacture as per customer’s special demand Accept third part inspection Applications: Used to neutralize acids, produce sodium salts, hydrolyze fats to make soaps, and precipitate metals; large amounts are used in petroleum refining, rayon production, and rubber reclaiming; Also used in metal cleaning, electroplating, processing cotton fabrics, and bleeching; Used in photography (developing bath); In semiconductor manufacturing, sodium hydroxide is used to "develop" the pattern in the photoresists and also as a wet echant. Caustic soda is used in hide preparation for leather production;