Consentement d'utilisation des Cookies

J'accepte Notre site sauvegarde des traceurs textes (cookies) sur votre appareil afin de vous garantir de meilleurs contenus et à des fins de collectes statistiques.Vous pouvez désactiver l'usage des cookies en changeant les paramètres de votre navigateur. En poursuivant votre navigation sur notre site sans changer vos paramètres de navigateur vous nous accordez la permission de conserver des informations sur votre appareil.

7580-67-8 - Lithium hydride, 97+% - A17948 - Alfa Aesar

A17948 Lithium hydride, 97+%

Numéro CAS
7580-67-8
Synonymes

Dimensions Prix ($) Quantité Disponibilité
50g 60,20
100g 107,00
250g 237,00
1000g 800,00
Ajouter au panier Ajouter au devis en vrac Afficher l'article

Lithium hydride, 97+%

MDL
MFCD00011074
EINECS
231-484-3

Propriétés chimiques

Formule
HLi
Poids formulaire
7.95
Point de fusion
688°
Densité
0.78
Sensibilité
Air & Moisture Sensitive
Solubilité
Reacts violently with water. Soluble in ether, liquid ammonia. Insoluble in benzene, and toluene.

Applications

Used for preparation of anhydrous Li salts of carboxylic acids prior to reaction with organothium reagents (most often methyl or phenyl) as a useful route to ketones. Also used in the preparation of LiCN by reaction with acetone cyanohydrins. It is also applied as a desiccating and condensing agent and a shielding material in nuclear energy production. It is used in the manufacture of catalysts for polyolefin plastics; in fuels for aircraft, missiles. It is used in metallurgy, as degasifier, deoxidizer, desulfurizer; as grain refiner in non-ferrous metals. Employed as a chemical intermediate for butyllithium polymerization catalyst; in alloys with aluminum or magnesium for aerospace uses.

Notes

Air & Moisture Sensitive. Store away from acids, alcohols, oxidizing agents, air, water/moisture. Keep the container tightly closed and place it in a cool, dry and well ventilated condition. Store under inert gas.

Références bibliographiques

Takeshi Ohkuma.; Shohei Hashiguchi.; Ryoji Noyori. A practical method for activation of commercial lithium hydride: reductive silylation of carbonyl compounds with lithium hydride and chlorotrimethylsilane.J. Org. Chem.,1994,59(1), 217-221.

F.E. Pretzel.; G.N. Rupert.; C.L. Mader.; E.K. Storms.; G.V. Gritton.; C.C. Rushing. Properties of lithium hydride I. Single crystals.J. Phys. Chem. Solids.,1960,16(1-2), 10-20.

Used for preparation of anhydrous Li salts of carboxylic acids prior to reaction with organothium reagents (most often methyl or phenyl) as a useful route to ketones. For a comprehensive review of this method, see: Org. React., 18, 1 (1970). For an example (cyclohexyl methyl ketone), see: Org. Synth. Coll., 5, 775 (1973).

For preparation of LiCN by reaction with acetone cyanohydrin, see: Org. Synth. Coll., 7, 517 (1990).

A procedure for activation involves treatment with TMS chloride and a catalytic amount of Zn or a Zn salt. This reagent will reduce a ketone to the TMS ether of the alcohol: J. Org. Chem., 59, 217 (1994).

Mentions de danger et de prudence du SGH

Mentions de danger (UE): H260-H314-H318

In contact with water releases flammable gases which may ignite spontaneously. Causes severe skin burns and eye damage. Causes serious eye damage.

Mentions de prudence: P210-P231+P232-P262-P280-P305+P351+P338-P308-P310-P378m

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Handle under inert gas. Protect from moisture. Do not get in eyes, on skin, or on clothing. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or concerned: Immediately call a POISON CENTER or doctor/physician. Use for extinction: Limestone powder.

Autres références

Merck
14,5533
Classe de danger
4.3
Groupe d'emballage
I
Code tarifaire harmonisé
2850.00
TSCA
Yes
RTECS
OJ6300000

Recommandé

Consulté récemment

Produits chimiques

Sciences de la vie

Métaux et matériaux

Catalyseurs

Analytique et matériel de laboratoire