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Sodium tetrasulfide information


Sodium tetrasulfide
Names
IUPAC name
Sodium tetrasulfide
Other names
disodiumtetrasulphide, sodium sulfide
Identifiers
CAS Number
  • 12034-39-8 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 74748 checkY
ECHA InfoCard 100.031.628 Edit this at Wikidata
EC Number
  • 234-805-5
PubChem CID
  • 82835
UNII
  • 11J35Y83VX checkY
CompTox Dashboard (EPA)
  • DTXSID1065186 Edit this at Wikidata
InChI
  • InChI=1S/2Na.H2S4/c;;1-3-4-2/h;;1-2H/q2*+1;/p-2
    Key: ZLCCLBKPLLUIJC-UHFFFAOYSA-L
SMILES
  • [Na+].[Na+].[S-]SS[S-]
Properties
Chemical formula
 Na2S4
Molar mass 174.24g/mol
Appearance Dark red, slightly viscous liquid or yellow crystalline powder
Density 1.268 g/cm3 at 15.5 °C
Melting point 275 °C (527 °F; 548 K)
Solubility in water
 Soluble in water
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Stable at room temperature, but can be explosive when heated. Reactions with acids or oxidative agents will create gaseous byproducts that would be hazardous if inhaled.
GHS labelling:
Pictograms
 GHS02: FlammableGHS05: CorrosiveGHS06: ToxicGHS09: Environmental hazard
Signal word
 Danger
Hazard statements
 H228, H301, H311, H314, H400
Precautionary statements
 P210, P240, P241, P260, P264, P270, P273, P280, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P361, P363, P370+P378, P391, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
3
1
1
Autoignition
temperature
 Not applicable
Safety data sheet (SDS) [1] [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Sodium tetrasulfide is an inorganic compound with the formula Na2S4. It is a yellow-orange solid that dissolves via hydrolysis in water.[2] It is a precursor to some specialty polymers and intermediates in prototypes of the sodium-sulfur battery.

  1. ^ "Safety Data Sheet, Sodium Tetrasulfide" (PDF). Pfaltz & Bauer. Archived from the original (PDF) on 2016-03-03. Retrieved 2013-11-17.
  2. ^ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 365.

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