• Oxidizing Chemical
  • Ammonium Nitrate
  • Hydrogen Peroxide
  • Nitric Acid

Home > Products > Alkalies > Sodium Sulfide

Sodium Sulfide

Product Name: Sodium Sulfide

Other Names:

Sodium monosulfide; Sodium sulfide (Na2S); sodium sulfuret; Sodium Sulphide; Disodium monosulfide; Disodium sulfide; disodiummonosulfide; disodiumsulfide; Hesthsulphid; Na2-S; disodium sulfanide; sodium sulfidosodium

Molecular Formula: Na2S

UN No.: 1849

HS No.:2830101000

CAS No.: 1313-82-2

EINECS No.: 215-211-5

Hazard Class:  8

Purity: 60%

Appearance: Yellow and Red Flakes

Grade Standard:  Industrial Grade


Detail

Physical and Chemical Properties:

Sodium sulfide is the chemical compound with the formula Na2S, or more commonly its hydrate Na2S•9H2O. Both the anhydrous and the hydrated salts are colorless solids, They are water-soluble, giving strongly alkaline solutions. When exposed to moist air, Na2S and its hydrates emit hydrogen sulfide, which smells like rotten eggs. Some commercial samples are specified as Na2S•xH2O, where a weight percentage of Na2S is specified. Commonly available grades have around 60% Na2S by weight, which means that x is around 3. Such technical grades of sodium sulfide have a yellow appearance owing to the presence of polysulfides. These grades of sodium sulfide are marketed as 'sodium sulfide flakes'.


Grade Standard: Industrial Grade

ITEMSTANDARDSTANDARDSTANDARD   IISTANDARD   IIISTANDARDSTANDARD
Fe10ppm   max20ppm   max30ppm   max80ppm   max150ppm   max1500ppm   max
Na2S60%min60%min.60%min.60%min.60%min.60%min.
Water   insolubles0.03%max0.10%max.0.18%max.0.20%max.0.30%max.0.40%max.
Na2CO31.80%max1.80%max.1.80%max.2.00%max.3.00%max.5.00%max.
Na2SO31.00%max1.80%max.1.80%max.2.00%max.2.00%max.2.00%max.
Na2S2O32.00%max2.00%max.2.00%max.2.00%max.2.00%max.2.00%max.
Colour                                                                      YellowRED

Note: The above specification meets requirement of GB/T 10500-2009,and also accords with European and American Standards. Third party inspection Is also acceptable, Such as BV,SGS etc.


Package:

PackageQuantity (Without Pallet)   20’GPQuantity (With Pallet)   20’GP
25kgs Bag25MT20MT
1000kgs bag20MT18MT


Application: 

Sodium sulfide is primarily used in the kraft process in the pulp and paper industry.

It is used in water treatment as an oxygen scavenger agent and also as a metals precipitant; in chemical photography for toning black and white photographs; in the textile industry as a bleaching agent, for desulfurising and as a dechlorinating agent; and in the leather trade for the sulfitisation of tanning extracts. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of rubber chemicals, sulfur dyes and other chemical compounds. It is used in other applications including ore flotation, oil recovery, making dyes, and detergent. It is also used during leather processing, as an unhairing agent in the liming operation.


Storage:

Store in a cool, dry place. Keep container closed when not in use. Store in a tightly closed container. Keep from contact with oxidizing materials. Keep away from strong acids. Store protected from moisture.

Like sodium hydroxide, sodium sulfide is strongly alkaline and can cause skin burns. Acids react with it to rapidly produce hydrogen sulfide, which is highly toxic.