Sodium Sulfide - Hongding Chemicals Chemical Reagents Tue, 17 Jun 2025 09:00:22 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 246622208 Sodium Sulfide https://www.hongdings.com/products/sodium-sulfide/ Tue, 06 Aug 2024 02:44:02 +0000 http://www.hongdings.com/product/blue-denim-shorts/ Widely used in mining industry, dye industry, printing and dyeing industry, leather industry, paper industry, textile industry, pharmaceutical industry, production of sulfides...

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]]> Product Name: Sodium Sulfide
CAS No: 1313-82-2
Einecs No: 215-211-5
HS Code: 2830101000
Formula: Na2S
Grade Standard: Tech Grade
Appearance: Light yellow flakes
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Mining Industry: Sulfidising agent and depressant for base metal ores.
Dye industry: Producing sulfur dyes.
Printing and dyeing industry: As leveling agent for dissolving sulfur dyes.
Leather industry: Depilating raw hides through hydrolysis, making polysulfide for dried hides softening.
Paper industry: As pulping agent.
Textile industry: Denitration of synthetic fibers, reduction of nitrates, and mordant for cotton dyeing.
Pharmaceutical industry: Producing antipyretic drugs such as phenacetin.
Production of sulfides: Sodium thiosulfate, sodium hydrosulfide, and sodium polysulfide.

Specification:

Item Range Unit Standard
Class I (Low Iron)
Yellow Alkali		 Class II (General)
Red Alkali
Sodium sulfide (Na₂S) ≥ ω/% 60 60
Sodium sulfite (Na₂SO₃) ≤ ω/% 1 –
Sodium thiosulfate (Na₂S₂O₃) ≤ ω/% 2.5 –
Iron (Fe) ≤ ω/% 0.002 0.015
Water insoluble ≤ ω/% 0.05 0.15
Sodium carbonate (Na₂CO₃) ≤ ω/% 2 3.5

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