Please check the spec. As follows : Product description English name: sodium hydroxide; caustic soda Molecular formula: naoh Molecular weight: 40.00 Specification : Caustic soda flake Caustic soda 99%min Naoh: 99% min. Na2co3: 0.7%max. Nacl: 0.1% max. Fe2o3: 0.005% max. Packing: 25kg pp bags, 25mt/fc Flakes or pearls: 25kg plastic bags (3 layer pp & pe) Solid: iron drum, net wt: 200kg (high of drum: 90cm)
