Product Name

  • Name

    Aluminium hydride

  • EINECS 232-053-2
  • CAS No. 7784-21-6
  • Article Data31
  • CAS DataBase
  • Density g/cm3
  • 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
  • Appearance
  • 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
  • Molecular Structure Molecular Structure of 7784-21-6 (Aluminium hydride)
  • Hazard Symbols
  • Synonyms alumane;Aluminum hydride [UN2463] [Dangerous when wet];α-ALUMINUM TRIHYDRIDE;alane;aluminum trihydride;Aluminum hydride (AlH3);aluminium trihydride;[AlH3];trihydridoaluminium;AlH3;
  • PSA 0.00000
  • LogP 0.33750

Synthetic route

lithium aluminium tetrahydride
16853-85-3

lithium aluminium tetrahydride

aluminium hydride
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;
lithium aluminium tetrahydride
16853-85-3

lithium aluminium tetrahydride

aluminium hydride
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

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

A

sodium tetrahydroborate
16940-66-2

sodium tetrahydroborate

B

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran ambient temp.;
In tetrahydrofuran ambient temp.;
Na(1+)*{AlH4}(1-)*BH3=Na{AlH4}*BH3

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

A

sodium tetrahydroborate
16940-66-2

sodium tetrahydroborate

B

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran ambient temp.;
In tetrahydrofuran ambient temp.;
NaAl2H7*4BH3

NaAl2H7*4BH3

A

sodium tetrahydroborate
16940-66-2

sodium tetrahydroborate

B

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran
thermic decompn.;
In tetrahydrofuran
thermic decompn.;
NaAl2H7*2BH3

NaAl2H7*2BH3

A

sodium tetrahydroborate
16940-66-2

sodium tetrahydroborate

B

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In tetrahydrofuran
thermic decompn.;
In tetrahydrofuran
thermic decompn.;
Nb2(AlH4)5

Nb2(AlH4)5

A

niobium

niobium

B

hydrogen
1333-74-0

hydrogen

C

aluminium hydride
7784-21-6

aluminium hydride

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

lithium aluminium tetrahydride

dibromophenylbismuthane
39110-02-6

dibromophenylbismuthane

A

B

aluminium hydride
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;
lithium aluminium tetrahydride
16853-85-3

lithium aluminium tetrahydride

dibromophenylbismuthane
39110-02-6

dibromophenylbismuthane

A

{Bi(C6H5)}x

{Bi(C6H5)}x

B

aluminium hydride
7784-21-6

aluminium hydride

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

lithium aluminium tetrahydride

zinc(II) iodide

zinc(II) iodide

A

zinc hydride*(0.1-0.3)diethyl ether

zinc hydride*(0.1-0.3)diethyl ether

B

aluminium hydride
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.;
lithium aluminium tetrahydride
16853-85-3

lithium aluminium tetrahydride

aluminum bromide

aluminum bromide

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In hexane in dry Ar glovebox or in vac. using Schlenk techniques; cold soln. of Al2Br6 in hexane added to suspn. of LiAlH4 in hexane preheated on oil bath(molar ratio of Al2Br6/LiAlH4 was 7:6); soln. addition rate was adjuste d so that temp. of mixt. ...;0%
sodium aluminum tetrahydride

sodium aluminum tetrahydride

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
With sulfuric acid In diethyl ether; toluene byproducts: Li2SO4, H2; in dry Ar glovebox or in vac. using Schlenk techniques; cold soln. of Al2Br6 in toluene/Et2O added to suspn. of NaAlH4 in toluene/Et2O preheatedon oil bath to 90°C (excess of NaAlH4 was 10-15 wt %); soln. add ition rate was adjusted so that ...;0%
alane N,N-dimethylethylamine complex
124330-23-0

alane N,N-dimethylethylamine complex

A

N,N-dimethyl-ethanamine
598-56-1

N,N-dimethyl-ethanamine

B

aluminium hydride
7784-21-6

aluminium hydride

Conditions
ConditionsYield
In neat (no solvent) at 131℃; Inert atmosphere;
n-Bu4

n-Bu4

aluminium hydride
7784-21-6

aluminium hydride

methoxybenzene
100-66-3

methoxybenzene

phenol
108-95-2

phenol

Conditions
ConditionsYield
With iodine In benzene cyclohexane; benzene99%
Quinuclidine
100-76-5

Quinuclidine

aluminium hydride
7784-21-6

aluminium hydride

(1-azabicyclo{2.2.2}octane)aluminium hydride
33959-83-0

(1-azabicyclo{2.2.2}octane)aluminium hydride

Conditions
ConditionsYield
In diethyl ether addn. of C7H13N to a soln. of AlH3 (from LiAlH4 and H2SO4) in ether (equimol. amts.), crystn. at -30°C; sepn. from the mother liquor, washing (cold pentane, 2 times), drying (oilpump vac.), sublimation (high-vac., 60°C); elem. anal.;90%
aluminium hydride
7784-21-6

aluminium hydride

sodium hydrogencarbonate
144-55-8

sodium hydrogencarbonate

ortho-nitrofluorobenzene
1493-27-2

ortho-nitrofluorobenzene

4-amino-3-fluorophenol
399-95-1

4-amino-3-fluorophenol

Conditions
ConditionsYield
With sulfuric acid In water86%
With sulfuric acid In water86%
p-cresol
106-44-5

p-cresol

1,3-bis(1-methylethenyl)-benzene
3748-13-8

1,3-bis(1-methylethenyl)-benzene

aluminium hydride
7784-21-6

aluminium hydride

1,3-Di[2-(2-hydroxy-5-methylphenyl)-2-propyl]-benzene

1,3-Di[2-(2-hydroxy-5-methylphenyl)-2-propyl]-benzene

Conditions
ConditionsYield
In n-heptane; acetone80%
ethyl bromide
74-96-4

ethyl bromide

methylene chloride
74-87-3

methylene chloride

aluminium hydride
7784-21-6

aluminium hydride

dimethylsilicon dichloride
75-78-5

dimethylsilicon dichloride

chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

Conditions
ConditionsYield
79.2%
N,N,N,N,-tetramethylethylenediamine
110-18-9

N,N,N,N,-tetramethylethylenediamine

aluminium hydride
7784-21-6

aluminium hydride

AlH3*N,N,N′,N′-tetramethyl-ethylenediamine
1436851-44-3, 221131-55-1, 32995-50-9

AlH3*N,N,N′,N′-tetramethyl-ethylenediamine

Conditions
ConditionsYield
In tetrahydrofuran Schlenk technique;74%
Quinuclidine
100-76-5

Quinuclidine

aluminium hydride
7784-21-6

aluminium hydride

bis(1-azabicyclo{2.2.2}octane)aluminium hydride
33959-84-1

bis(1-azabicyclo{2.2.2}octane)aluminium hydride

Conditions
ConditionsYield
In diethyl ether addn. of C7H13N to a soln. of AlH3 (from LiAlH4 and H2SO4) in ether (2:1 molar ratio), crystn. at -30°C; sepn. from the mother liquor, washing (cold pentane, 2 times), drying (oilpump vac.), sublimation (high-vac., 60°C); elem. anal.;72%
rhenocene hydride

rhenocene hydride

aluminium hydride
7784-21-6

aluminium hydride

(bis(cyclopentadienyl)rhenium hydride)(aluminium hydride)

(bis(cyclopentadienyl)rhenium hydride)(aluminium hydride)

Conditions
ConditionsYield
In diethyl ether addn. of a soln. of AlH3 in ether to a stirred soln. of Cp2ReH in ether under dry Ar; stirring the mixt. for 3 h, filtering off the formed ppt., washing with ether and drying in a vacuum, elem. anal.;65%
Na(1+)*(C5H5)3Yb(1-) = Na[(C5H5)3Yb]
155804-70-9

Na(1+)*(C5H5)3Yb(1-) = Na[(C5H5)3Yb]

aluminium hydride
7784-21-6

aluminium hydride

[AlH2(C4H8O)4](1+)*[(C5H5)3YbNaYb(C5H5)3](1-)=[AlH2(C4H8O)4][(C5H5)3YbNaYb(C5H5)3]

[AlH2(C4H8O)4](1+)*[(C5H5)3YbNaYb(C5H5)3](1-)=[AlH2(C4H8O)4][(C5H5)3YbNaYb(C5H5)3]

Conditions
ConditionsYield
With triethyl amine In tetrahydrofuran; diethyl ether; benzene byproducts: NaAlH4; reaction under dry Ar: Yb-complex is suspended in a THF/benzene mixture, addn. of a soln. of AlH3 in ether and addn. of NEt3 with stirring, further stirring for 2 h; filtn., evapn. of filtrate, decanting, vac. drying, elem. anal.;60%
piperidine
110-89-4

piperidine

aluminium hydride
7784-21-6

aluminium hydride

bis(μ-piperidinido)tetrakis(piperidinido)dialuminium
174744-41-3

bis(μ-piperidinido)tetrakis(piperidinido)dialuminium

Conditions
ConditionsYield
In tetrahydrofuran (argon); stirring (room temp., 5 h); removal of solvent, washing (light petroleum), dissoln. (toluene), crystn. on cooling to -30°C for 12 h; elem. anal.;57%
tetrafluoroboric acid

tetrafluoroboric acid

dodecacarbonyl-triangulo-triruthenium
15243-33-1

dodecacarbonyl-triangulo-triruthenium

aluminium hydride
7784-21-6

aluminium hydride

A

H4(ruthenium)4(carbonyl)12

H4(ruthenium)4(carbonyl)12

B

dihydrotetraruthenium tridecacarbonyl

dihydrotetraruthenium tridecacarbonyl

Conditions
ConditionsYield
In tetrahydrofuran; diethyl ether N2 atmosphere; addn. of soln. of AlH3 in Et2O to soln. of Ru-compd. in THF (-20°C), protonation with HBF4; IR spectroscopy;A 20%
B 40%
In tetrahydrofuran; diethyl ether N2 atmosphere; addn. of soln. of AlH3 in Et2O to soln. of Ru-compd. in THF (-50°C), protonation with HBF4;
cis-Mo(CO)4{Ph2PNH(CH2)3N(Me)(CH2)3NHPPh2}
84537-77-9

cis-Mo(CO)4{Ph2PNH(CH2)3N(Me)(CH2)3NHPPh2}

aluminium hydride
7784-21-6

aluminium hydride

{((C6H5)2PN(CH2)3N(CH3)(CH2)3NP(C6H5)2)Mo(CO)3H}(3-)*3Li(1+)={((C6H5)2PN(CH2)3N(CH3)(CH2)3NP(C6H5)2)Mo(CO)3H}Li3
123263-81-0

{((C6H5)2PN(CH2)3N(CH3)(CH2)3NP(C6H5)2)Mo(CO)3H}(3-)*3Li(1+)={((C6H5)2PN(CH2)3N(CH3)(CH2)3NP(C6H5)2)Mo(CO)3H}Li3

Conditions
ConditionsYield
In tetrahydrofuran N2-atmosphere; refluxed for 4h; not isolated, detected by IR-spectroscopy;40%
1-Heptene
592-76-7

1-Heptene

magnesium sulfate anhydride

magnesium sulfate anhydride

di-μ-chlorobis[(p-cymene)chlororuthenium]

di-μ-chlorobis[(p-cymene)chlororuthenium]

dichloroacetic acid methyl ester
116-54-1

dichloroacetic acid methyl ester

aluminium hydride
7784-21-6

aluminium hydride

tricyclohexylphosphine
2622-14-2

tricyclohexylphosphine

(E)-6-dodecene
7206-17-9

(E)-6-dodecene

Conditions
ConditionsYield
In nitrogen; toluene35.2%
[1,3-(tBu)2(C5H3)]2Sm

[1,3-(tBu)2(C5H3)]2Sm

aluminium hydride
7784-21-6

aluminium hydride

aluminium hydride*TMEDA

aluminium hydride*TMEDA

A

(C5H3(C(CH3)3)2)5Sm4(AlH4)4H3((CH3)2NC2H4N(CH3)2)2

(C5H3(C(CH3)3)2)5Sm4(AlH4)4H3((CH3)2NC2H4N(CH3)2)2

B

aluminium
7429-90-5

aluminium

Conditions
ConditionsYield
In diethyl ether byproducts: H2; dropwise addn. of AlH3 in ether to soln. of Sm-compd. in diethyl ether, addn. of AlH3*TMEDA, stirred for 24 h; pptn. filtered off, filtrate concd., sepn. after 48 h, washed with pentane, dried in vac.; elem. anal.;A 35%
B n/a
N,N,N'N'-tetramethyl-1,3-propanediamine
110-95-2

N,N,N'N'-tetramethyl-1,3-propanediamine

aluminium hydride
7784-21-6

aluminium hydride

C7H18N2*AlH3

C7H18N2*AlH3

Conditions
ConditionsYield
In tetrahydrofuran at -40℃; for 504h; Schlenk technique;24%

diethyl ether
60-29-7

diethyl ether

aluminium hydride
7784-21-6

aluminium hydride

((C5H5)2YCl)2AlH3(O(C2H5)2)

((C5H5)2YCl)2AlH3(O(C2H5)2)

Conditions
ConditionsYield
In diethyl ether AlH3 added to suspn. of Cp2YCl in Et2O under Ar; filtered, filtrate concd., ppt. sepd., dried in vac.;20%
ethyl (2E)-3-[2-(4-methoxyphenyl)cyclopropyl]prop-2-enoate

ethyl (2E)-3-[2-(4-methoxyphenyl)cyclopropyl]prop-2-enoate

aluminium hydride
7784-21-6

aluminium hydride

ethyl 3-[2-(4-methoxyphenyl)cyclopropyl]propionate

ethyl 3-[2-(4-methoxyphenyl)cyclopropyl]propionate

Conditions
ConditionsYield
In ethyl acetate
ethyl (2E)-3-[2-(3-methoxyphenyl)cyclopropyl]prop-2-enoate

ethyl (2E)-3-[2-(3-methoxyphenyl)cyclopropyl]prop-2-enoate

aluminium hydride
7784-21-6

aluminium hydride

ethyl (2E)-3-[2-(3-hydroxyphenyl)cyclopropyl]propanoate

ethyl (2E)-3-[2-(3-hydroxyphenyl)cyclopropyl]propanoate

Conditions
ConditionsYield
In ethyl acetate
1α,3β-bis-triisopropylsilyloxy-20-oxo-5,6-transpregnacalciferol

1α,3β-bis-triisopropylsilyloxy-20-oxo-5,6-transpregnacalciferol

propargyl aluminium

propargyl aluminium

aluminium hydride
7784-21-6

aluminium hydride

mercury (II) chloride
7487-94-7

mercury (II) chloride

propargyl bromide
106-96-7

propargyl bromide

1α,3β-bis-triisopropylsilyloxy-20-propargyl-20-hydroxy-9,10-secopregna-5(E),7,10(19)-triene

1α,3β-bis-triisopropylsilyloxy-20-propargyl-20-hydroxy-9,10-secopregna-5(E),7,10(19)-triene

Conditions
ConditionsYield
In tetrahydrofuran; toluene

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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