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Lithium Aluminum Hydride CAS#16853-85-3

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Chemical Name：Lithium Aluminum Hydride

CAS No.:16853-85-3

Molecular Formula：LiAlH4

Molecular weight:37.954298

Sample: Available

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Product Details

Products Description of Lithium Aluminum Hydride CAS#16853-85-3

Lithium aluminum hydride is a commonly used reducing agent in organic chemistry. It can reduce a variety of functional group compounds.

It can also act on double-bond and triple-bond compounds to achieve hydroalumination. In addition, lithium aluminum hydride can also participate in the reaction as a base.

For example, react LiAlH4 with 2 mol of ethanol to generate lithium diethoxyaluminum hydride [LiAlH2(OC2H5)2];

react with 3 mol of tert-butanol to generate lithium tri-tert-butoxyaluminum LiAlH[OC(CH3)3]3. Lithium aluminum hydride has a strong hydrogen transfer ability and can reduce aldehydes, ketones, esters, lactones, carboxylic acids, anhydrides and epoxides to alcohols, or convert amides, imine ions, nitriles and aliphatic nitro compounds to corresponding amines. In addition, the super strong reducing ability of lithium aluminum hydride allows it to act on other functional groups, such as reducing halogenated alkanes to alkanes.

In this type of reaction, the activity of the halides is from large to small, followed by iodide, bromide and chloride.

Lithium Aluminum Hydride Chemical Properties

Melting point	125 °C (dec.)(lit.)
Boiling point	0°C
density	0.97 g/mL at 20 °C
Fp	99 °F
storage temp.	Store below +30°C.
solubility	reacts with H2O, ethanol; seth, tetrahydrofuran
form	tablets (~0.5 g each)
color	White to light gray
Specific Gravity	0.917
Odor	Odorless solid
Water Solubility	Reacts
Sensitive	Air & Moisture Sensitive
Hydrolytic Sensitivity	8: reacts rapidly with moisture, water, protic solvents
Merck	14,350
Exposure limits	TLV-TWA 2 mg(Al)/m3 (ACGIH).
Stability:	Stable. Reacts violently with water, liberating hydrogen. Incompatible with strong oxidizing agents, alcohols, acids.
CAS DataBase Reference	16853-85-3(CAS DataBase Reference)
NIST Chemistry Reference	Lithium tetrahydroaluminate(16853-85-3)
EPA Substance Registry System	Lithium aluminum hydride (16853-85-3)

Safety Information

Hazard Codes	F,C,Xi,Xn,F+,T
Risk Statements	15-34-14/15-11-36/37-19-40-10-67-66-22-12-35-37-65-48/20-63-36/38-61-60
Safety Statements	43-7/8-6A-45-43B-36/37/39-33-26-16-24/25-27-29-62-53
RIDADR	UN 3399 4.3/PG 1
WGK Germany	2
RTECS	BD0100000
F	10-21
TSCA	Yes
HS Code	2850 00 20
HazardClass	4.3
PackingGroup	I
Hazardous Substances Data	16853-85-3(Hazardous Substances Data)
Toxicity	TLV-TWA (ACGIH) 2 mg (Al)/m3

Product Application of Lithium Aluminum Hydride CAS#16853-85-3

It is used as a polymerization catalyst, reducing agent, jet fuel, and also for the synthesis of drugs. Lithium aluminum hydride is an extremely strong reducing agent. It can reduce aldehydes, ketones, acids, anhydrides, esters, lactones, quinones, acyl chlorides, etc. to alcohols, nitriles to primary amines, and halogenated hydrocarbons to hydrocarbons. However, it usually cannot hydrogenate carbon-carbon double bonds. It is widely used as a reducing agent in medicine, fragrances, pesticides, dyes, and other fine organic syntheses.

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