Most if not all solid lithium aluminum hydride will contain some form of insoluble oxides from slight air exposure. You should be able to filter the insolubles - keeping air exposure to a minimum is the key. This procedure should be done entirely under argon (argon is typically a drier gas than nitrogen). If the final solution is exposed to air at any time, insolubles will be formed which will then require further filtration to get clear again.
212776
Lithium aluminum hydride solution
1.0 M in THF
Synonym(s):
LAH, Lithium alanate, Lithium tetrahydroaluminate
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About This Item
Linear Formula:
LiAlH4
CAS Number:
Molecular Weight:
37.95
MDL number:
UNSPSC Code:
26111700
PubChem Substance ID:
NACRES:
NA.22
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form
liquid
Quality Level
reaction suitability
reagent type: reductant
concentration
1.0 M in THF
density
0.905 g/mL at 25 °C
storage temp.
2-30°C
SMILES string
[Li+].[AlH4-]
InChI
1S/Al.Li.4H/q-1;+1;;;;
InChI key
OCZDCIYGECBNKL-UHFFFAOYSA-N
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Related Categories
Application
Reactant or reagent for:
LAH is a powerful reducing agent for many different reduction reactions such as that of ketones to alcohols
- The preparation of thermoplastic polyester polyamides from oleic acid
- Lithium-polymer batteries
- Hydrodefluorination of gem-difluoromethylene derivatives
- Asymmetric aldol reactions
- Synthesis of Li-Al-N-H composites with hydrogen absorption / desorption properties
LAH is a powerful reducing agent for many different reduction reactions such as that of ketones to alcohols
Packaging
The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.
Legal Information
Sure/Seal is a trademark of Sigma-Aldrich Co. LLC
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Central nervous system, Respiratory system
Supplementary Hazards
Storage Class Code
4.3 - Hazardous materials which set free flammable gases upon contact with water
WGK
WGK 1
Flash Point(F)
1.4 °F - closed cup
Flash Point(C)
-17 °C - closed cup
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The nature of the solute species present in ethereal solutions of LiAlH(4) is of crucial importance for understanding the mechanisms for the reduction of ketones and other functional groups by LiAlH(4). We have employed a combination of theoretical and experimental
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Product 212776, Lithium aluminum hydride solution, appears to container a precipitate in it. Is it still OK to use?
1 answer-
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What is the Department of Transportation shipping information for this product?
1 answer-
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.
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Why is Product 212776, Lithium aluminum hydride solution, considered carcinogenic?
1 answer-
The carcinogen reference comes from Tetrahydrofuran (THF). The solution is 90% THF. The THF reference is form the National Toxicology Program (NTP) database.
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