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Aluminum hydride

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Name

Aluminum hydride

EINECS 232-053-2
CAS No. 7784-21-6 Density g/cm3
PSA 0.00000 LogP 0.33750
Solubility evolves H2 in H2O [HAW93] Melting Point decomposes at 160℃ [HAW93]
Formula AlH3 Boiling Point °Cat760mmHg
Molecular Weight 30.0054 Flash Point °C
Transport Information N/A Appearance N/A
Safety Hydrides of some metals (such as AsH3) are extremely toxic. Dangerous fire hazard. An unstable material which is spontaneously flammable in air or O2. Evolves explosive H2 upon contact with moisture. Severe explosion hazard by chemical reaction wherein H2 gas is produced, also in contact with methyl ethers contaminated by CO2. Mixtures with tetrazole derivatives are explosive. Reacts with oxidizing materials. On contact with acid or acid fumes, it can emit toxic fumes. See also HYDRIDES and ALUMINUM COMPOUNDS. Risk Codes N/A
Molecular Structure Molecular Structure of 7784-21-6 (Aluminium hydride) Hazard Symbols N/A
Synonyms

alumane;Aluminum hydride [UN2463] [Dangerous when wet];α-ALUMINUM TRIHYDRIDE;alane;aluminum trihydride;Aluminum hydride (AlH3);aluminium trihydride;[AlH3];trihydridoaluminium;AlH3;

Article Data 31

Aluminum hydride Synthetic route

16853-85-3

lithium aluminium tetrahydride

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran
In diethyl ether at 0℃; for 0.25h; Inert atmosphere;
In diethyl ether Inert atmosphere; Glovebox;
16853-85-3

lithium aluminium tetrahydride

7784-21-6

aluminium hydride

Conditions
ConditionsYield
With sulfuric acid Product distribution / selectivity;
With sulfuric acid In tetrahydrofuran at 5 - 11℃; for 1.5h; Product distribution / selectivity;
With sulfuric acid

Na(1+)*{AlH4}(1-)*2BH3=Na{AlH4}*2BH3

A

16940-66-2

sodium tetrahydroborate

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran ambient temp.;
In tetrahydrofuran ambient temp.;

Na(1+)*{AlH4}(1-)*BH3=Na{AlH4}*BH3

A

16940-66-2

sodium tetrahydroborate

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran ambient temp.;
In tetrahydrofuran ambient temp.;

NaAl2H7*4BH3

A

16940-66-2

sodium tetrahydroborate

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran
thermic decompn.;
In tetrahydrofuran
thermic decompn.;

NaAl2H7*2BH3

A

16940-66-2

sodium tetrahydroborate

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran
thermic decompn.;
In tetrahydrofuran
thermic decompn.;

Nb2(AlH4)5

A

niobium

B

1333-74-0

hydrogen

C

7784-21-6

aluminium hydride

Conditions
ConditionsYield
keeping at 0°C for 8 h;
16853-85-3

lithium aluminium tetrahydride

39110-02-6

dibromophenylbismuthane

A

B

7784-21-6

aluminium hydride

C

lithium bromide

lithium bromide

Conditions
ConditionsYield
In diethyl ether byproducts: H2; between -70 and -100°C;
In diethyl ether byproducts: H2; between -70 and -100°C;
16853-85-3

lithium aluminium tetrahydride

39110-02-6

dibromophenylbismuthane

A

{Bi(C6H5)}x

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In diethyl ether byproducts: LiCl, H2; -110°C;
16853-85-3

lithium aluminium tetrahydride

zinc(II) iodide

A

zinc hydride*(0.1-0.3)diethyl ether

zinc hydride*(0.1-0.3)diethyl ether

B

7784-21-6

aluminium hydride

Conditions
ConditionsYield
In diethyl ether; toluene byproducts: LiI; ratio ether-toluene = 3:7 by volume, various temps. and reaction times; sepd., washed with ether-toluene 3:7 and ether, dried (vac., 2 h, room temp.); elem. anal.;

Aluminum hydride Consensus Reports

Reported in EPA TSCA Inventory.

Aluminum hydride Standards and Recommendations

ACGIH TLV: TWA 2 mg(Al)/m3
DOT Classification:  4.3; Label: Dangerous When Wet

Aluminum hydride Specification

The Aluminum hydride, with the CAS registry number 7784-21-6, is also known as Alane.It belongs to the product categories of inorganic matter.This chemical's molecular formula is AlH3 and molecular weight is 30.01. Its EINECS number is 232-053-2. What's more,Its systematic name is Aluminum hydride.It is a colorless to white solid,Ignites in air with or without oxygen enrichment [Bretherick 1979 p. 221]. Explosively hydrolyzed by water (forms hydrogen gas) [Ruff J.K. Inorg. Synth 1967, 9, 34].Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.

Aluminium hydride is a powerful reducing agent. May react violently with oxidizers. Prolonged exposure to heat may cause spontaneous decomposition. Can also decompose spontaneously at ambient temperature with explosive violence. Occasionally, explosions have occurred when Aluminium hydride was stored in ether. The explosions have been blamed on the presence of carbon dioxide impurity in the ether [J. Amer. Chem. Soc. 70:877 1948]. Can emit toxic fumes on contact with acid or fumes from an acid. [Lewis]. At elevated temperatures, the hydride reduces carbon dioxide or sodium hydrogen carbonate to methane and ethane. These gases are the explosive products formed when CO2 extinguishers have been used during hydride fires. The 1:1 complexes of the hydride (as a complex with ether or dimethylamine) and various tetrazole derivatives are explosive. Tetrazoles include, 2-methyl, 2-ethyl, 5-ethyl, 2-methyl-5-vinyl, 5-amino-2-ethyl, etc., [US Pat. 3 396 170, 1968].

Physical properties about Aluminum hydride are: (1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0.

The Aluminum hydride indrafted or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.

You can still convert the following datas into molecular structure:
(1)SMILES:[AlH3];
(2)Std. InChI:InChI=1S/Al.3H;
(3)Std. InChIKey:AZDRQVAHHNSJOQ-UHFFFAOYSA-N.

The toxicity data of Aluminum hydride as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD intraperitoneal > 10gm/kg (10000mg/kg)   "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 10, 1999.
rat LD intratracheal > 500mg/kg (500mg/kg)   "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 10, 1999.
rat LD intratracheal > 500mg/kg (500mg/kg) BRAIN AND COVERINGS: RECORDINGS FROM SPECIFIC AREAS OF CNS

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 10, 1999.
rat LD oral > 10gm/kg (10000mg/kg)   "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 10, 1999.
rat LD subcutaneous > 10gm/kg (10000mg/kg)   "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 10, 1999.

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