1. Caustic Soda Solid, 2.purity:99% 98% .90% 85% 3. Sodium Hydroxide ... 8% max. 3) Fe2O3: 0.01% max. Useage: Caustic Soda Solid 99%Caustic soda, also known as sodium hydroxide, is widely ... and paper products, textiles, soaps and detergents, soap-making, refinery of petroleum and grease, aluminum oxide extracting, plastic industry etc. 25kg/pp ... 'FCL with pallet or as customers' request Caustic soda solid