питания натрия Сульфид хлопья 60% мин

Product name: Sodium Sulphide H.S.CODE: 28301010 CAS NO.: 1313-82-2 Molecular formula: Na2S Appearance: Thin flakes, yellow or red, soluble water, presenting strong alkaline solution, easily oxidized when exposed to air, poison. Specification: 1. Sodium Sulphide red flake 1)Purity: 60% min 2)Fe: 1500ppm 3)Na2CO3: 5% max 4)Water Insoluble:0.4% max 2. Sodium Sulphide yellow flake 1)Purity: 60% min 2)Fe: 150ppm, 50ppm and 30ppm. 3)Na2CO3: 2% max 4)Water Insoluble:0.2% max Packing:in 25kg plastic woven bags,or jumbo bags. Usage: Used as making sulphur dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in paper-making also widely used in pigment and rubber industry, etc.