sodium diethyldihydroaluminate Property

Density 

0.875

EPA Substance Registry System

Aluminate(1-), diethyldihydro-, sodium, (T-4)- (17836-88-3)

Safety

Hazard Codes 

F,Xn

Risk Statements 

63-11-22-36/38-48/20-65-67

Safety Statements 

16-26-36/37-62

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P330Rinse mouth.

P501Dispose of contents/container to..…

sodium diethyldihydroaluminate Chemical Properties,Usage,Production

Chemical Properties

Sodium diethyldihydridoaluminate, NaAlH2(C2H5)2, is a white, crystalline substance, mp 85 – 87℃, which ignites spontaneously in air. It is insoluble in aliphatic but fairly soluble in aromatic hydrocarbon solvents. The solubility of sodium diethyldihydridoaluminate in toluene can be considerably increased by addition of a small amount of THF. Solutions of this reagent must be kept under an inert atmosphere, since they lose their activity by hydrolysis and oxidation if exposed to air. The reducing power of this hydride is comparable with that of LiAlH4. The ethyl groups generally do not take part in the reduction, but give rise to large volumes of ethane when the intermediate aluminate complex is hydrolyzed. This ethane should be safely disposed of, preferably by burning.

Preparation

Sodium diethyldihydridoaluminate is produced by reaction of sodium, aluminum, and triethyl aluminum in toluene at ca. 150℃and 7 MPa hydrogen pressure.
3 Na+Al+2 Al(C2H5T3)3 H2→3 NaAlH2(C2H5)3