Sodium Sulfide

Alternate Text

Molecular formula: Na2S

Molecular weight: 78

CAS No.: 1313-82-2

Property:Red or yellow flake, easily oxidized when exposed to air, it is not stable, melting point is 50℃, soluble in water, aqueous solution is alkaline, when react with acid will escape hydrogen, slightly soluble in alcohol, insoluble in ether.


Depilatory for hides and skins, manufacture of rubber, sulphur dyes, rayon (denitrating) , paperpulp, ore floatation, metal refining, engraving, cotton printing, as chemical intermediates and laboratory reagent. 

1.In dye industry to produce sulfer dye stuff, sulfide green, blue or dye intermediates reductant mordant etc. 

2.Used in non-ferrous metallurgical industry, ore flotation agent.

3.Used in leather-making industry as depilatory cream for raw hides.

4.Used in paper making industry as pulp blending and cooking agent.

5.Used in producing sodium thiosulphate, sodium polysulphide and sodium hydrosulphide.

Packing:Net in 25KG plastic woven bag.

Item Red Flake Yellow Flake Yellow Flake
Na2S 60% Min 60% Min 50% Min
Fe 300ppm Max 10ppm/30ppm Max 10ppm/30ppm Max
Water Insoluble Matter 0.4% Max 0.2% Max 0.2% Max
Na2CO3 5% Max 3% Max 3% Max


Is a specialized manufacturing and operating chemical enterprise Our company own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas. Oxalic acid, formic acid, sodium formate, calcium formate, sodium sulphide, series of humic acid, sodium hydrosulphide, ammonium chloride, sodium thiosulfate, and calcium nitrite are partial strong products. Among them, STPP occupy largest export volume and export to more than 20 countries and regions in America , Asia, Africa and other continents, winning customers praise with its superior quality , favorable price and excellent service. For over 10 years, stick to business philosophy of" you should give your customer what they really need not what you think they need ", Verdi has built long term & stable trade relationship with more than 45 countries and regions in the world. sincerely hope to cooperate with more clients in the world and seek common developments.