Item: caustic soda (also known as Sodium Carbonate) Molecular formula: Na2CO3 C.A.S: 497-19-8 H.S.: 28362000 Molecular Mass: 105.99 Appearance: white crystal powder, hygroscopic, odorless Solubility: Easily soluble in water Purity: 99.2% min. Chlorides: 0.7% max. Fe: 0.004% max. Water insolubles: 0.04% max. LOI: 0.8% max. Sulphate: 0.03% max. 25/50kg net per bag, 25mt/20'FCL, 500kg, 1000kg PP or PE bag or pallet available.