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Sodium Hydrosulfide (NaHS Flakes) 70%

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Sodium Hydrosulfide (NaHS Flakes) 70%

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  • Product Application
  • Composition
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  • Safety & Handling
  • User reviews

NaHS Types.

Sodium Hydrosulphide (NaHS) flakes, liquid, solid.

Mining: Flotation agent

NaHS is also used as a substitute for sodium sulphide for the sulphidization of copper, oxides of copper, lead or zinc making them amenable to collector attack.

Commonly used prior to collector addition for the activation of Cu, Pb, and Zn minerals. The choice of whether to use Na2S or NaHS depends on the pH required in flotation, as Na2S is more alkaline and also, whichever works best (test to verify). Typically made up to 15-25 % solution strength.


Leather industry

 -For the removal of hair from hides.

 Cloth and paper manufacture

As a makeup chemical for sulfur used in the Kraft process.


Though less effective than sodium sulphide,  Na2S, sodium hydrosulphide usage translates to better saving because it is cheaper.


Our NaSH Sodium Hydrosulfide is produced in the newest facility in China with over 50,000ton annual production.


 NaSH Sodium Hydrosulfide Warehouse in North China.

NaSH Package (25/900kg Bag for Flake NaSH;Steel Drum for Solid NaSH;IBC TANK for Liquid NaSH)


CAS number

207683-19-0 (hydrate)





EC number




RTECS number





Molecular formula


Molar mass

56.063 g/mol


off-white solid, deliquescent


1.79 g/cm3

Melting point

350 ºC (anhydrous)
55 °C (dihydrate)
22 °C (trihydrate)

Solubility in water

50 g/100 mL (22 °C)


soluble in alcohol, ether


View FileSodium Hydrosulfide MSDS    Size: (1.23 MB)
View FileSodium Hydrosulfide COA    Size: (1.25 MB)

Sodium Hydrosulfide COA


Sodium Hydrosulphide is recommended to be kept only in closed, properly labeled containers. Do nor store in zinc, aluminum, or copper containers. Sodium Hydrosulphide is stored in cool, dry, ventilated area to prevent it from being deliquescent. Separated from acids, acidic materials, oxidizing agents.

Inhalation: Inhalation of the dust can cause sore throat, coughing and shortness of breath. Very high or very long exposures could lead to a build-up of fluid in the lungs (pulmonary edema) and, possibly, death.

Skin Contact: Can cause severe skin irritation and burns.  

Eye Contact: Can cause redness, pain, blurred vision and burns which are slow   healing. Blindness may result.

Refer to Sodium Hydrosulphide MSDS for more handling information.

  • With thousands of suppliers competing for our business, Kemcore has proven to be the most reliable and consistent import/export company in China, offering quality chemicals at competitive prices. We strive to continue working with them.

    Macheng Macheng

    Senior Buyer

    KS Energy (Pty) Ltd

  • Kemcore’s greatest advantage is understanding our culture, values, and expectations for business transactions, quality, and delivery from the Asian market feeding into Africa. Our business started with trial orders of 20 tons to the current 350 tons per month.

    Mike Peto

    Managing Director

    Sesani EPCM

  • Our import volume of chemicals and other mining accessories stands at $5.65mil/yr. We have significantly increased our market share due to the competitiveness & consistency in quality.

    Menfred Mukumba (MCIPS)

    Supply Chain Manager

    Intrachem Pvt Ltd

  • Kemcore continues to be  instrumental in procuring a complete suite of reagents for  our gold/copper flotation plant . I do not hesitate to recommend Kemcore services for Xanthate, DTP's plant reagent supply, especially when procuring out of China.

    Brienie Dzumbunu

    Metallurgical Superintendent

    Pan African Mining

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