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| CAS No.: | 1313-82-2 |
|---|---|
| Formula: | Na2s |
| EINECS: | 215-211-5 |
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Product Name
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Sodium Sulphide
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Purity
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60% Min
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CAS No
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1313--82-2
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Packing
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25kgs bag
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MF
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Na2S
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Color
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Yellow and Red
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EINECS No
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215-211-5
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Usage
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Leather Tanner
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Place of Origin
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Shandong, China
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Grade Standard
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Industrial Grade
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Items
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Standards
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Na2S%≤
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60
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60
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60
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60
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Na2so3%≤
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2
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2
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2
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2
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Water Insoluble% ≤
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0.05
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0.05
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0.2
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0.2
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Fe%≤
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0.0015
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0.003
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0.008
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0.015
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Sodium Sulfide (Na2S, commonly known as sulfide alkali) is a highly important inorganic chemical
raw material with extensive applications across various industrial fields. Below is a detailed summary
of its main uses:
1. Chemical and Dye Industry
Production of Dyes and Intermediates: Serves as a key raw material and reducing agent in the
production of sulfur dyes (e.g., sulfur black, sulfur blue), which are commonly used for dyeing
cotton fibers.
Production of Other Sulfides: Acts as an essential raw material for manufacturing chemicals such
as sodium hydrosulfide (NaHS), sodium polysulfide (Na2Sx), and sodium thiosulfate (Na2S2O3,
commonly known as "hypo").
2. Leather Industry
Depilatory Agent: Its aqueous solution is highly alkaline and can break down keratin in hair, loosening
hair roots. It is a primary chemical used in traditional leather processing for raw hide depilation.
3. Non-Ferrous Metallurgical Industry
Ore Flotation Agent: Utilized in mineral processing as a flotation agent to separate and enrich non-ferrous metal ores (e.g., copper, lead, zinc, molybdenum) by forming insoluble sulfide precipitates
with various heavy metal ions.
4. Paper Industry
Cooking Agent: Used as a component in the cooking liquor during the Kraft process (sulfate pulping)
to dissolve lignin in wood, thereby separating cellulose for pulp production.
5. Textile Industry
Dyeing Assistant: Functions as a mordant for certain dyes, helping them adhere more firmly to fibers.
Reducing Agent: Used to reduce certain dyes, allowing them to re-oxidize and develop color after
dyeing.
6. Water Treatment and Environmental Protection
Heavy Metal Precipitant: Employed in treating industrial wastewater to precipitate heavy metal ions
(e.g., Hg²+, Cd²+, Pb²+) by forming highly insoluble sulfides, enabling heavy metal recovery and
compliant wastewater discharge.
7. Electroplating Industry
Electroplating Additive: Used as an additive in certain electroplating processes (e.g., cyanide zinc
plating, silver-cadmium alloy plating).
Precious Metal Recovery: Applied to precipitate and recover precious metals such as silver from
waste solutions.
8. Other Applications
Rubber Industry: Used as a vulcanizing agent (referring to auxiliary cross-linking, distinct from elemental sulfur vulcanization) and thermal stabilizer in certain rubber processes.
Pigment Production: Employed in the manufacture of certain inorganic pigments.
Chemical Analysis: Used as a common analytical reagent in laboratories for detecting and identifying
metal ions.
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Packing
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Quantity
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25KGS Bag With Pallet
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18MTS
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| 25KGS Bag Without Pallet | 24MTS |
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1000KGS Bag
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20MTS
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