1. SODIUM SULPHIDE LOW IRON CONTENT
Sodium sulphide (containing low iron) is usually the mixture of various crystal water, the specific gravity is 1.55-1.68, melting point 85~95¡æ, low iron, low carbon, low mixed objects, yellow, corrosive, poisonous, It's easy to be oxidized and deliquesced in the air and easy to be dissolved in water. Sodium sulphide (containing low iron) is mainly applied to the super leather- making, pharmacy, industries of dyeing printing, dyeing papermaking and metallurgy.
INDEX |
SPECIFICATION |
SUPER LOW ¢ñ |
SUPER LOW ¢ò |
HIGH CLASS |
FIRST CLASS |
SECOND CLASS |
Na2S |
60% min |
60% min |
60% min |
60% min |
60% min |
Na2SO3 |
1.00% max |
1.00% max |
2.00% max |
2.00% max |
2.00% max |
Na2S2O3 |
-- |
-- |
2.00% max |
2.00% max |
2.00% max |
Fe |
0.001% max |
0.002% max |
0.003% max |
0.005% max |
0.008% max |
Na2CO3 |
2.00% max |
2.00% max |
1.80% max |
2.00% max |
2.00% max |
water insoluble |
0.05% max |
0.05% max |
0.18% max |
0.20% max |
0.20% max |
appearance |
light yellow flake |
yellow flake |
2.SODIUM SULPHIDE SOLID
specification |
Na2S |
60% Min. |
water insolubles |
0.4% Max. |
Fe |
0.15% Max. |
Na2CO3 |
5% Max. |
uses |
used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in papermaking . also widely used in pigment and rubber industry, etc. |
synonyms |
Disodium sulfate; sodium sulfate anhydrous; sulfuric acid, disodium salt; sodium sulfate. |
molecular formula |
Na2S |
packing |
in 150 kgs iron drums |
quantity of minimum order |
1 FCL or 20MT |
3.SODIUM SULPHIDE FLAKES(RED)
specification |
Na2S |
60% Min. |
water insolubles |
0.4% Max. |
Fe |
0.15% Max. |
Na2CO3 |
5% Max. |
uses |
Used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in papermaking.also widely in pigment and rubber industry, etc. |
synonyms |
Disodium sulfate; Sodium Sulfate Anhydrous; Sulfuric Acid, Disodium Salt; Sodium Sulfate. |
packing |
25 kgs plastic woven bags lined with one layer polythene bags, inside with plastic coating bags. |
molecular formula |
Na2S |
quantity of minimum order |
1 FCL or 20MT |
4.SODIUM SULPHIDE FLAKES (YELLOW)
specification |
Na2S |
60% Min. |
water insolubles |
0.4% Max. |
Fe |
0.005% Max. |
Na2CO3 |
1.5% Max. |
Na2SO3 |
2.0% Max. |
Na2S2O3 |
2.0% Max. |
uses |
Used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in papermaking .also widely used in pigment and rubber industry, etc. |
synonyms |
Disodium sulfate; sodium sulfate anhydrous; sulfuric acid, disodium salt; sodium sulfate. |
packing |
25 kgs plastic woven bags lined with one layer polythene bags, inside with plastic coating bags. |
molecular formula |
Na2S |
quantity of minimum order |
1 FCL or 20MT |
5. SODIUM SULPHIDE ANHYDRATE
It is mainly used in dyeing, leather processing, pharmacy and the production of polyphenyl thioether.
INDEX |
SPECIFICATION |
Na2S |
92% min |
90% min |
88% min |
Na2SO3 + Na2S2O3 |
3% max |
3.5% max |
4.00% max |
Moisture |
0.5% max |
0.5% max |
0.5% max |
Na2CO3 |
2.00% max |
2.5% max |
3.00% max |
Na2SO4 |
1.00% max |
1.00% max |
1.00% max |
water insoluble |
0.05% max |
0.05% max |
0.05% max |
density |
0.5% max |
0.5% max |
0.5% max |
appearance |
yellow granular |
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