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323403

Sigma-Aldrich

Lithium aluminum hydride

greener alternative

pellets, reagent grade, 95%

Synonym(s):

LAH, Lithium alanate, Lithium tetrahydroaluminate

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About This Item

Linear Formula:
LiAlH4
CAS Number:
16853-85-3
Molecular Weight:
37.95
EC Number:
240-877-9
MDL number:
MFCD00011075
UNSPSC Code:
26111700
PubChem Substance ID:
24859363
NACRES:
NA.22

grade

reagent grade

Quality Level

200

Assay

95%

form

pellets

reaction suitability

reagent type: reductant

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size

10 mm × 6 mm

mp

125 °C (dec.) (lit.)

greener alternative category

, Enabling

SMILES string

[Li].[AlH3]

InChI

1S/Al.Li.4H/q-1;+1;;;;

InChI key

OCZDCIYGECBNKL-UHFFFAOYSA-N

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General description

Lithium aluminum anhydride is effective as a selective reducing agent.The anhydride may be prepared by reacting lithium hydride with aluminum chloride. It is soluble in ether and it can reduce carboxyl group to primary alcohol group with great ease. Other organic compounds that can be reduced by lithium aluminum hydride are aldehydes, ketones, acid chlorides, acid anhydrides, halides, quinones, nitrogen compounds.
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Application

Lithium aluminum hydride (LAH) can be used as a promising material for hydrogen storage applications. Its properties include high gravimetric and volumetric hydrogen densities.
Lithium aluminum hydride can be used to prepare undec-10-en-1-ol, a key intermediate for the preparation of polythioethers.

Pictograms

FlameCorrosion
GHS02,GHS05

Signal Word

Danger

Hazard Statements

H260,H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1A - Water-react 1

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

监管及禁止进口产品

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Certificates of Analysis (COA)

Lot/Batch Number
STBL4550
STBL4615
STBL1235
STBK6741
STBK6740

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Why should I use Product 323403, the LAH pellets, instead of a fine crystalline powder?

    The pellets are recommended for safety reasons. Powdered lithium aluminum hydride can form potentially explosive dust-air mixtures. But use of the lithium aluminum hydride pellets, which can tolerate exposure to air for a short period of time, avoids the dusting associated with the powder. Please note that longer dissolving times, perhaps up to 90 minutes at room temperature, need to be taken into account when using the pellet form.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Sasol Encyclopaedia of Science and Technology null
Renewable sulfur-containing thermoplastics via AB-type thiol-ene polyaddition
van den Berg O, et al.
European Polymer Journal, 49(4), 804-812 (2013)
Reduction of Organic Compounds by Lithium Aluminum Hydride. III. Halides, Quinones, Miscellaneous Nitrogen Compounds1.
Nystrom RF and Brown WG
Journal of the American Chemical Society, 70(11), 3738-3740 (1948)
Reductions by lithium aluminum hydride.
Brown WG
Organic Reactions (1951)
Regeneration of lithium aluminum hydride
Graetz J, et al.
Journal of the American Chemical Society, 130(52), 17790-17794 (2008)
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