Sodium Sulfide Yellow Flake — Na₂S

Sodium Sulfide Yellow Flake
Sodium Sulfide Yellow Flake
Chemical Formula Na₂S
Synonym Sodium sulfide hydrated, Sulfurated soda flakes
CAS No. 1313-82-2
HS Code 2830.1010
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Sodium Sulfide Yellow Flake — Na₂S
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Identifiers

IUPAC Disodium sulfide hydrate
UN Number UN 1849 (solid), UN 2949 (solution)

Applications

Leather depilationPaper IndustryTextile processingMetal precipitationDye manufacturing

Forms Available

Yellow flakesCrystalline powder60% solution

Properties

Density 1.43 g/cm³ (hydrated form)
Purity 60-62% Na₂S, ≤2% impurities (iron, water-insoluble), 30-32% active sulfur
Molecular Weight 240.18 g/mol (nonahydrate)
Appearance Yellow flakes, Deliquescent crystals

Grades

Technical gradeIndustrial gradeReagent grade

Storage

PACKING OPTIONS 25KG, Big bags, Palletizing, Customization

Documents

COA-Sodium Sulfide-Industrial.pdf

Notes

·Yellow color indicates hydrated form (vs. red anhydrous flakes)
·Contains ~9 water molecules (nonahydrate) under standard conditions
·More stable than red flakes but still moisture-sensitive
·Releases H₂S when acidified (characteristic rotten egg odor)

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