Search Chemicals supplies Caustic Soda / Potash Sodium Hydroxide as Dry Basis. Search Chemicals supplies range of chemicals, solvents acids, sealants, lab chemicals, tapes and stretch films. The Caustic Soda / Potash Sodium Hydroxide as Dry Basis has Sodium Carbonate of 0.40% max. The Caustic Soda / Potash Sodium Hydroxide as Dry Basis Sodium has Hydroxide of 99.50% min. The Caustic Soda / Potash Sodium Hydroxide as Dry Basis has Chloride of 0.10% max. The Caustic Soda / Potash Sodium Hydroxide as Dry Basis has Iron of 20% max.