Sodium disulfide
Basic information
- CAS
22868-13-9- Standard SMILES
[Na+].[Na+].[S-][S-]- InChIKey
SRRKNRDXURUMPP-UHFFFAOYSA-N- Molecular formula
- Na2S2
- Average molar mass
- 110.11 g/mol
- Monoisotopic mass
- 109.92368056
Names & identifiers
- Preferred name
- Sodium disulfide
- IUPAC
- Disodium disulfide
- English name
- disodium disulphide
- Molecular formula
- Na2S2
- Molecular weight
- 110.11
Names & synonyms
Sodium disulfide22868-13-9Sodium sulfide (Na2(S2))EINECS 245-272-3UNII-B20OMA37AHB20OMA37AHdisodium disulfideRefChem:183875DTXCID0029898SODIUM SULFIDE (NA2S2)DTXSID40873992245-272-3
Show more names
Disodio persulfideSodium disulfide, anhydrous
Disodium disulphideNa2S2SCHEMBL31606742
Database identifiers
- CAS
22868-13-9- PubChem CID
- 89870
- DTXSID
DTXSID40873992- EC Number
- 245-272-3
- Nikkaji
- J286.328F
Properties
Computed structural properties
- Topological polar surface area
- 2 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 4
- Formal charge
- 0
- Complexity
- 4
Physicochemical properties
- Melting point
- 495 °C · 495 °C
- Density
- 2.01 g · 2.01 g cm-3
- solubility
- readily sol water; sol ethanol.
- FDA UNII
- 20 OMA37AH · B20OMA37AH
- EPA Substance Registry System
- Sodium sulfide (Na2(S2)) (22868-13-9)
- TSCA
- TSCA listed
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety data
- tsca
- TSCA listed
Chemistry & industry
Uses & manufacturing
General Manufacturing InformationSodium sulfide (Na2(S2)): INACTIVE
Applications
UsesDisodium disulphide is used as a nucleophilic agent for synthesis of organic disulfides and selective reducing reagent for the nitro group.[1-3]
Preparation methods
PreparationDisodium disulphide (Na2S2) preparations are cumbersome and sometimes afford mixtures containing the polysulfides Na2S4 and Na2S5. They involve reduction of Sulfur with Sodium in liquid ammonia, heating Na with S in a vacuum at 500 °C, or heating Na2S4 with Na in absolute ethanol under inert gas.[4-5] Na2S2 is formed in situ by heating the aqueous or alcoholic Sodium Sulfide solution with elemental sulfur.[6-9]
Related reactions
10 records
Compound notes
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