Lithium hydride

Lithium hydride is an inorganic compound with the molecular formula HLi and CAS number 7580-67-8. It is a simple metal hydride consisting of lithium and hydrogen atoms, with a low molecular weight of 8 g/mol. This crystalline solid serves as an important reducing agent and hydrogen source in various industrial applications, particularly in metallurgy and chemical synthesis processes.

Lithium hydride is a white to gray crystalline solid at room temperature with a molecular weight of 8 g/mol. It has a cubic crystal structure and is highly reactive with water, producing hydrogen gas and lithium hydroxide. The compound has a high melting point and is insoluble in most organic solvents but reacts violently with protic solvents and atmospheric moisture.

Lithium hydride is primarily used as a powerful reducing agent in organic synthesis and metallurgical processes. It serves as a hydrogen source in chemical reactions, particularly in the production of other hydrides and in metal reduction processes. Additionally, it finds applications in the nuclear industry, battery technology research, and as a desiccant for removing traces of water from inert atmospheres.

Lithium hydride requires strict safety precautions due to its high reactivity with moisture and air. Always wear appropriate PPE including safety goggles, protective gloves, and work clothing. Handle only in dry, inert atmospheres using proper ventilation systems. Avoid contact with water, alcohols, and humid air as these can cause violent reactions producing flammable hydrogen gas and heat.

Lithium hydride must be stored in airtight, moisture-proof containers under inert gas atmosphere to prevent reaction with atmospheric moisture. Store in a cool, dry area away from water sources, oxidizing agents, and acids. Use appropriate secondary containment and ensure storage areas are well-ventilated with proper fire suppression systems designed for flammable gas hazards.

Lithium hydride contact requires immediate action due to its corrosive nature when exposed to moisture. For skin contact, brush off dry material gently and avoid water initially. For eye contact, flush immediately with large amounts of water. In case of ingestion, do not induce vomiting and seek immediate medical attention. Ensure adequate ventilation if hydrogen gas is generated.

Lithium hydride disposal must follow strict hazardous waste regulations due to its reactivity and potential to generate flammable hydrogen gas. Contact specialized hazardous waste disposal companies for proper handling. Never dispose of in regular waste streams or pour down drains. Small quantities may be carefully neutralized by trained personnel using appropriate dry inert materials before disposal.

Lithium hydride is classified under ADR Class 4.3 (substances which, in contact with water, emit flammable gases), Packing Group I, indicating high danger level. It requires specialized packaging designed for water-reactive substances, proper labeling with Class 4.3 hazard labels, and transport by trained personnel familiar with dangerous goods regulations. Ensure complete moisture exclusion during transport.

Lithium hydride is subject to various chemical safety regulations including REACH registration requirements in Europe and CLP classification for hazard communication. It is not currently listed as a Substance of Very High Concern (SVHC). However, its high reactivity subjects it to strict transport regulations (ADR Class 4.3) and workplace safety requirements including proper ventilation and emergency procedures.

Lithium hydride is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As a professional chemical supplier, OYSI can provide lithium hydride with appropriate documentation, safety data sheets, and regulatory compliance for industrial applications. Contact OYSI directly for availability, technical specifications, and delivery options in your region.