Sodium Sulphide/Sodium Sulfuret flake 1) all kinds of sodium flakes 2) purity: 52%, 60% 3)Brand products in China ... Sodium Sulphide/Sodium Sulfuret flake Molecular formula: Na2SAppearance: Thin flakes, yellow or red, soluble water, presenting strong alkaline solution, ... to air, poison. Specification:1. Red flakes-purity:60%,iron:1500ppm2. Yellow flakes purity:60%,iron:30ppm,50ppm,80ppm,150ppm ...