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Sodium sulfide(CAS No. 1313-82-2)

Sodium sulfide Na2S (cas 1313-82-2) Molecular Structure

1313-82-2 Structure

Identification and Related Records

Sodium sulfide
【CAS Registry number】
Sodiumsulfide (Na2S)
Disodium sulfide
Disodium sulfide (Na2S)
NSC 41874
Sodium sulphide
【Molecular Formula】
Na2S (Products with the same molecular formula)
【Molecular Weight】
【Canonical SMILES】
【MOL File】

Chemical and Physical Properties

crystals of varied colour, with a repulsive odour
【Melting Point】
【Boiling Point】
186 g/L (20℃)
Water solubility: 186 g/L (20 °C)
Spontaneously flammable. Incompatible with acids, metals, oxidizing agents. Contact with acid liberates toxic gas. Fine dust/air mixtures are explosive. Hygroscopic.
【Storage temp】
Refrigerator (+4°C)
【Computed Properties】
Molecular Weight:78.04454 [g/mol]
Molecular Formula:Na2S
H-Bond Donor:0
H-Bond Acceptor:1
Rotatable Bond Count:0
Exact Mass:77.95161
MonoIsotopic Mass:77.95161
Topological Polar Surface Area:1
Heavy Atom Count:3
Formal Charge:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:3

Safety and Handling

【Hazard Codes】
【Risk Statements】
【Safety Statements 】

A poison by ingestion and intraperitoneal routes. Flammable when exposed to heat or flame. Unstable and can explode on rapid heating or percussion. Reacts violently with carbon, diazonium salts, n,n-dichloromethylamine, o-nitroaniline diazonium salt, water. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFIDES.
Hazard Codes:?CorrosiveC,DangerousN
Risk Statements: 31-34-50?
R31 :Contact with acids liberates toxic gas.?
R34:Causes burns.?
R50:Very toxic to aquatic organisms.
Safety Statements: 26-45-61?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)?
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

【PackingGroup 】
UN 1385

?Sodium sulfide , its cas register number is 1313-82-2. It also can be called Sodium bichromate ; and Disodium monosulfide .


Reported in EPA TSCA Inventory.

Use and Manufacturing


In prodn of heavy water for nuclear reactors.

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