Lithium

Li

lithium

CAS7439-93-2
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
Danger

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Identification

CAS Number
7439-93-2
EC Number
231-102-5
UN Number
1415
Index Number
003-001-00-4
PubChem CID
3028194

Physical-chemical properties

Molecular Formula
Li
Molar Mass
7.00 g/mol
IUPAC Name
lithium

Chemical Identifiers

InChI
InChI=1S/Li
InChI Key
WHXSMMKQMYFTQS-UHFFFAOYSA-N

Overview

Lithium (CAS 7439-93-2) is an alkali metal with exceptional reactivity and the lowest density of all metals at standard conditions. As the lightest metal in the periodic table, lithium belongs to the alkali metal family alongside sodium and potassium, sharing their characteristic high reactivity with water and air. This silvery-white metallic element exhibits unique properties that make it invaluable across numerous industrial applications, particularly in modern energy storage technologies and specialized chemical processes. The metal's exceptional reactivity requires careful handling and storage under inert atmospheres or mineral oil to prevent oxidation and moisture contact. When exposed to water, lithium reacts vigorously, producing lithium hydroxide and hydrogen gas, which poses significant safety risks. This water-reactive nature, classified as Water-react. 1 under GHS standards, along with its corrosive properties (Skin Corr. 1B), necessitates appropriate personal protective equipment and specialized handling procedures. Lithium's primary industrial applications center on battery manufacturing, where lithium compounds serve as essential components in rechargeable lithium-ion batteries powering everything from consumer electronics to electric vehicles. The pharmaceutical industry utilizes lithium compounds in psychiatric medications, while the ceramics and glass industries employ lithium as a flux to reduce melting temperatures and improve thermal shock resistance. Additionally, lithium finds application in specialized alloys and as a desiccant in air conditioning systems. The metal's low atomic weight and high electrochemical potential make it particularly valuable in aerospace applications and advanced metallurgy. Unlike heavier alkali metals such as potassium, lithium's unique combination of lightness and reactivity opens possibilities in specialized chemical synthesis and advanced materials development. OYSI maintains reliable supply chains for lithium and related alkali metal products, ensuring consistent availability for European industrial customers requiring this critical raw material.

Safety & Classification

Danger
Classification:

Water-react. 1; Skin Corr. 1B

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H260

In contact with water releases flammable gases which may ignite spontaneously.

H314

Causes severe skin burns and eye damage.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Skin Contact

Harmful

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1415
ADR Class4.3
Packing GroupI
Tunnel CodeB/E
Proper Shipping NameLithium, nicht pyrophor
Marine PollutantNo

Frequently Asked Questions

What is lithium?

Lithium is a soft, silvery-white alkali metal and the lightest metal in the periodic table. With the chemical symbol Li and atomic number 3, it has a molecular weight of only 7 g/mol. This highly reactive element is classified as water-reactive (class 1) and skin corrosive (1B), making it a dangerous substance requiring careful handling. Lithium naturally occurs in small quantities and is essential for various industrial applications due to its unique electrochemical properties.

What are the physicochemical properties of lithium?

Lithium is a soft, silvery-white metal that can be cut with a knife and has a metallic luster when freshly cut. It has the lowest density of all metals (0.534 g/cm³) and floats on water. The metal reacts vigorously with water, producing lithium hydroxide and hydrogen gas. It has a melting point of 180.5°C and boiling point of 1342°C. Lithium is highly reactive with moisture and air, forming a dark oxide coating when exposed.

What is lithium used for?

Lithium is primarily used in rechargeable lithium-ion batteries for electronics, electric vehicles, and energy storage systems. It serves as a crucial component in pharmaceutical applications, particularly in treating bipolar disorder. Industrial uses include ceramics and glass production, where it reduces melting temperatures and thermal expansion. Lithium is also employed in metallurgy as a deoxidizing agent, in lubricating greases, and in specialized alloys for aerospace applications.

How to handle lithium safely?

Lithium requires strict safety measures due to its water-reactive and corrosive nature. Personnel must wear appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing. Handle only in dry, inert atmospheres to prevent violent reactions with moisture. Ensure adequate ventilation and have Class D fire extinguishing agents available, as lithium fires cannot be extinguished with water. Keep away from water, acids, and oxidizing materials during manipulation.

How to store lithium correctly?

Lithium must be stored under mineral oil or in inert atmospheres like argon or nitrogen to prevent contact with moisture and air. Use airtight, corrosion-resistant containers in cool, dry, well-ventilated areas away from water sources. Separate from incompatible materials including acids, oxidizers, and halogenated compounds. Storage areas should have appropriate fire suppression systems designed for metal fires and be equipped with spill containment measures for emergency situations.

What to do in case of contact with lithium?

Lithium contact requires immediate action due to its corrosive nature. For skin contact, remove contaminated clothing and brush off any metal particles before flushing with large amounts of water for at least 15 minutes. For eye contact, rinse immediately with water for 15-20 minutes. If ingested, do not induce vomiting and seek immediate medical attention. In case of inhalation of lithium dust, move to fresh air immediately and provide oxygen if breathing is difficult.

How to dispose of lithium appropriately?

Lithium disposal requires specialized hazardous waste procedures due to its reactive and corrosive properties. Never dispose of lithium in regular waste or down drains. Small quantities should be neutralized by trained professionals using appropriate methods under inert conditions. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Follow local and national regulations including waste classification codes and transport requirements for hazardous materials throughout the disposal process.

How to transport lithium?

Lithium is classified under ADR class 4.3 (water-reactive substances) packing group I, indicating high danger level during transport. It requires specialized packaging meeting UN specification standards and proper hazard labeling with GHS02 and GHS05 pictogrammes. Transport vehicles must carry appropriate emergency equipment and documentation. Only trained personnel should handle lithium shipments, and transport must comply with dangerous goods regulations including routing restrictions and emergency response procedures.

Is lithium subject to specific regulations?

Lithium is subject to comprehensive chemical regulations including REACH registration requirements and CLP classification as Water-react. 1 and Skin Corr. 1B with danger signal word. It requires safety data sheets and proper labeling with GHS02 and GHS05 pictogrammes. While not currently listed as an SVHC substance, lithium is regulated under dangerous goods transport legislation and may have workplace exposure limits. Industrial users must comply with occupational safety regulations and emergency planning requirements.

Where to buy lithium in Europe?

Lithium is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As a professional chemical supplier, OYSI provides lithium with proper documentation, safety data sheets, and regulatory compliance support. Due to lithium's hazardous classification and transport requirements, purchase is typically restricted to qualified industrial users with appropriate handling facilities and safety measures. Contact OYSI directly for availability, specifications, and technical support for your lithium requirements.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.