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SODIUM SULPHIDE ( Na2S.xH2O )

 
Sodium Sulphide is a co-product in the manufacture of Barium Carbonate. The solution of Sodium Sulphide obtained from the process is concentrated to 6-18% and is available at different percentages in tanker loads. It is also converted into Flakes / Solid of different purities ranging from 52 - 60%, depending on the customer's requirement.
1. Athiappa Sodium Sulphide Lye (ASSL)
Appearance: Light Yellow Liquid 
Chemical Analysis:
Total Sulphide as Na2
18 % Min.
Suspended insoluble matter
0.15% Max.
Sodium Hydrosulphide as NaHS 
0.50% Max.
Other reducing compounds as Na2S2O3
0.60% Max.
2. Athiappa Sodium Sulphide Flakes Iron - Free ( ASSF-I )
Appearance: Yellow flakes 
Chemicals Analysis:
Total Sulphide as Na2
60% Min.
Sodium Hydrosulphide as NaHS
2.5% Max.
Excess alkali as NaOH 
2.00% Max.
Other reducing compounds as Na2S2O3 
2.00% Max.
Iron as Fe2O3 and Aluminium compounds 
0.002% Max.
Sulphate as Na2S04 
1.00% Max.
Chloride as NaCl
1.00% Max.
Water insolubles
0.20% Max.
Packing: 25 / 50 Kg Polythene laminated H.D.P.E. bags or 50 Kg M.S.Drums. 
3. Athiappa Sodium Sulphide Flakes (ASSF)
Appearance : Reddish Brown flakes
Chemical Analysis:
Total Sulphide as Na2
60% Min.
Sodium Hydrosulphide as NaHS
2.5% Max.
Excess Alkali as NaOH 
2% Max.
Other reducing Compounds as Na2S2O3
2% Max.
Iron as Fe2O3 and Aluminium Compounds
0.5% Max.
Sulphate as Na2SO4
1% Max.
Chloride as NaCl 
1% Max.
Water insolubles
0.25% Max.
Packing: 25 / 50 Kg Polythene laminated H.D.P.E. bags or 50 Kg M.S.Drums.
4. Athiappa Sodium Sulphide Solid(ASSS)
Appearance: Reddish Brown
Chemical Analysis:
Total Sulphide as Na2S
60% Min.
Sodium Hydrosulphide as NaHS
2.5% Max.
Excess Alkali as NaOH
2% Max.
Other reducing compound as Na2S2O3 
2% Max.
Iron as Fe2O3 and Aluminium compounds
0.5% Max.
Sulphate as Na2SO4
1% Max.
Chloride as NaCl 
1% Max.
Packing : 120 -140 Kg in M.S.Drums

Applications:
  • in tanneries for removing hair from hides and skins.
  • in pharmaceutical industries as a selective and cost-efficient reducing agent.
  • for obtaining Sulphur Black Dyes.
  • in Ore floatation.
  • as analytical reagent.
  • in Engraving.
  • in viscose Rayon Industry for removing Sulphur.
  • in the production of Heavy water used for Atomic Power Plants.
  • to remove heavy metals from waste waters in many industries.
  • in the craft wood-pulping process, it is used in synthetic cooking liquor.
  • in the manufacture of lubricating oils.
  • in the production of polysulphide elastomers. 
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