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499811

Sigma-Aldrich

Lithium

granular, 99% trace metals basis

Synonyme(s) :

Lithium atom, Lithium element

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About This Item

Formule linéaire :
Li
Numéro CAS:
7439-93-2
Poids moléculaire :
6.94
Numéro CE :
231-102-5
Numéro MDL:
MFCD00134051
Code UNSPSC :
12141803
ID de substance PubChem :
24873303
Nomenclature NACRES :
NA.23

Pureté

99% trace metals basis

Forme

granular

Pertinence de la réaction

reagent type: reductant

Résistivité

9.446 μΩ-cm, 20°C

Point d'ébullition

1342 °C (lit.)

Pf

180 °C (lit.)

Densité

0.534 g/mL at 25 °C (lit.)

Chaîne SMILES 

[Li]

InChI

1S/Li

Clé InChI

WHXSMMKQMYFTQS-UHFFFAOYSA-N

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Description générale

Granular lithium is a form of lithium metal that has been ground into small granules. Lithium is a soft, silver-white metal that is highly reactive and flammable. Lithium has a low density of 0.534 g/cm3, which makes it one of the lightest metals. Like the other alkali metals, lithium has a low melting point (180 °C) and is a good conductor of electricity and heat. Granular lithium is highly reactive and behaves as a strong reducing agent. It must be handled with caution due to its potential to ignite or explode. Lithium reacts readily with water and oxygen to form lithium hydroxide and lithium oxide, respectively, and even reacts with nitrogen gas at room temperature, forming lithium nitride. Typically, lithium is stored in an argon glovebox and airtight containers to prevent exposure to moisture, air, and nitrogen. To make granular lithium, the metal is first extracted from ores such as spodumene or lepidolite using a process called lithium carbonate conversion. After the lithium has been purified to a high degree of purity, it is milled into granules by rotating blades.
Lithium is a low-density alkali metal that is widely used as an anode material in rechargeable and non-rechargeable batteries. It is also used to alloy with aluminum and magnesium to make them stronger and lighter.

Application

Lithium can be used as:
  • A precursor to synthesize Li-based alloys such as LiAl and LiSi alloys, which are applicable as anode materials in the field of energy conversion and storage.
  • A reducing agent in the reduction of zirconium oxide compounds in molten LiCl salt.
  • As starting material to synthesize a reducing agent(1,4-bis(trimethylgermyl)-1.4-dihydropyrazine), for the fabrication of nickel metal films.

Pictogrammes

FlameCorrosion
GHS02,GHS05

Mention d'avertissement

Danger

Mentions de danger

H260,H314

Classification des risques

Skin Corr. 1B - Water-react 1

Risques supp

EUH014

Code de la classe de stockage

4.3 - Hazardous materials which set free flammable gases upon contact with water

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificats d'analyse (COA)

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A low-temperature thermal ALD process for nickel utilizing dichlorobis(triethylphosphine)nickel(ii) and 1{,}4-bis(trimethylgermyl)-1{,}4-dihydropyrazine"
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