Lithium sulfide , 99.5%tracemetalsbasis , 12136-58-2

Synonym(s):
(lithiosulfanyl)lithium

CAS NO.：12136-58-2

Empirical Formula: Li2S

Molecular Weight: 45.95

MDL number: MFCD00011085

EINECS: 235-228-1

PRODUCT Properties

• Melting point: >900°C
• Density: 1.66 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• form: Powder
• Specific Gravity: 1.66
• color: Yellow
• Water Solubility: soluble in water and ethanol
• Sensitive: Moisture Sensitive
• Crystal Structure: Reverse CaF2 type
• crystal system: Cube
• Space group: Fm3m
• Lattice constant:
  • a/nm: 0.5718
  • b/nm: 0.5718
  • c/nm: 0.5718
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.187
• InChI: InChI=1S/2Li.S
• InChIKey: ZWDBUTFCWLVLCQ-UHFFFAOYSA-N
• SMILES: S([Li])[Li]
• CAS DataBase Reference: 12136-58-2(CAS DataBase Reference)
• EPA Substance Registry System: Lithium sulfide (Li2S) (12136-58-2)

Description and Uses

Lithium sulfide (Li2S) is a product specially designed for the use in high performance batteries which can be either applied as electrode material or as precursor for solid electrolytes. It as an electrode material not only has high capacity but also overcomes many problems caused by pure sulfur electrodes.
Lithium sulfide is an anti fluorite semiconductor (bandgap 3.865eV). It exists in orthorhombic and cubic structures. The densities of the orthorhombic and cubic structures are 1.75g/cm3 and 1.63g/cm3 respectively.
Lithium sulfide has been studied as a MgB2- like superconductor. It is also used as a cathode material in rechargeable lithium-sulfur batteries.

Safety

• Symbol(GHS): GHS05,GHS06
• Signal word: Danger
• Hazard statements: H301-H314
• Precautionary statements: P260-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
• Hazard Codes: C
• Risk Statements: 22-31-34
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 2923 8/PG 2
• WGK Germany: 3
• RTECS: OJ6439500
• F: 8-10-13
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II