Lithium sulfide

  • Dilithium monosulfide
  • Dilithium sulfide
Formula
Li2S
Structure
Description
Hygroscopic, pale yellow crystals.
Uses
Used in depilating agents.

Registry Numbers and Inventories.
CAS
12136-58-2
EC (EINECS/ELINCS)
235-228-1
22 31 34
26 36/37/39 45
RTECS
OJ6439500
RTECS class
Other
UN (DOT)
3262
Beilstein/Gmelin
9374 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Li2S
Formula mass
45.94
Melting point, °C
900 - 975
Boiling point, °C
1527
Density
1.66 g/cm3 (25 C)
Solubility in water
Readily soluble.
Dielectric constant
4.14
Thermal expansion
5.564E-5/K

Hazards and Protection.
Storage
Keep tightly closed. Incompatible Materials: Acids
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Stable at normal temperatures and pressures. Protect from moisture.
Incompatibilities
Strong oxidizing agents Avoid contact with acid.
Decomposition
Hydrogen sulfide gas.

Fire.
Fire fighting
Extinguish using agent most appropriate for surrounding fire.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
1
 

Health.
Exposure effects
Corrosive. Contact with acids liberates toxic gas. Harmful if swallowed. Causes burns.
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3262
Response guide
Hazard class
8
Packing Group
II