IPCS INCHEM Home
LITHIUM HYDRIDE
ICSC: 0813
Peer-Review Status: 04.12.2000 Validated
 
CAS #: 7580-67-8 RTECS #: OJ6300000
UN #: 1414
EINECS #: 231-484-3
    Formula: LiH
Molecular mass: 7.95

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Many reactions may cause fire or explosion.  NO open flames.  NO hydrous agents. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent deposition of dust.   
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation Cough. Nausea. Vomiting. Confusion. Laboured breathing. Burning sensation. Shortness of breath. Sore throat. Symptoms may be delayed. See Notes.  Use local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin Redness. Skin burns. Blisters. Pain.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Severe deep burns. Pain. Blurred vision.  Wear face shield or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Dizziness. Diarrhoea. Abdominal pain. Burning sensation. Shock or collapse. Tremor. Further see Inhalation. Muscle twitching.  Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: chemical protection suit including self-contained breathing apparatus.  Airtight.
Unbreakable packaging.
Put breakable packaging into closed unbreakable container. 
EC Classification
 
UN Classification
UN Hazard Class: 4.3; UN Pack Group: I 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-43G04.
NFPA Code: H3; F4; R2; W. 
Separated from strong oxidants. Dry. Keep under inert gas. 

IMPORTANT DATA
Physical State; Appearance
ODOURLESS WHITE-TO-GREYISH HYGROSCOPIC SOLID IN VARIOUS FORMS. TURNS DARK ON EXPOSURE TO LIGHT. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
The substance may ignite spontaneously on contact with air. Reacts violently with oxidants, halogenated hydrocarbons, acids and water to form flammable/explosive gas (hydrogen - see ICSC 0001) and, in the case of water, lithium hydroxide which is very caustic. Decomposes on contact with hot surfaces or flames. This produces irritating alkali fumes. 

Occupational exposure limits
TLV: 0.025mg/m³ as TWA; (ACGIH 1999). 

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of of the aerosol may cause lung oedema. See Notes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 850°C
Melting point: 680°C
Relative density (water = 1): 0.76-0.77
Solubility in water: reaction
Auto-ignition temperature: 200°C
Explosive limits, vol% in air: see Notes 
 

NOTES
Reacts violently with fire extinguishing agents such as water, carbon dioxide, foam or halogenated compounds such as carbon tetrachloride.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation are therefore essential.
Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations