Specification:
a Sodium Sulphide red flake
1)Purity: 60% min
2)Fe: 1500ppm
3)Na2CO3: 5% max
4)Water Insoluble: 0.4% max
b. Sodium Sulphide yellow flake
1)Purity: 60% min
2)Fe: 150ppm, 50ppm and 30ppm.
3)Na2CO3: 2% max
4)Water Insoluble: 0.2% max
10,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.
a Sodium Sulphide red flake
1)Purity: 60% min
2)Fe: 1500ppm
3)Na2CO3: 5% max
4)Water Insoluble: 0.4% max
b. Sodium Sulphide yellow flake
1)Purity: 60% min
2)Fe: 150ppm, 50ppm and 30ppm.
3)Na2CO3: 2% max
4)Water Insoluble: 0.2% max
10,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.