Caustic Soda Flake: 1.White flakes,pearls or solid forms. 2.widely used in metallurgy,petroleum,chemicals, ... .0Sodium≤ 0.8Oxidize≤ 0.05Oxidize the Iron≤0.008Appearance: White flakes,pearls or solid forms. Application: widely used in metallurgy,petroleum,chemicals ... industry, pharmacy and food industry,metal hardwares etc.Packing: Flakes/Pearls: 1)in 25kg p.w.bags..25MT/20'FCL. 2 ...