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Trimethylaluminum

Trimethylaluminum structure

CAS No:
75-24-1
Formula:
C3H9Al
Chemical Name:
Trimethylaluminum
Synonyms:
Aluminum,trimethyl-;Trimethylaluminum;Alane,trimethyl-;Trimethylaluminium;Trimethylalane;Trimethylaluminum (Al(CH3)3);26628-81-9
Categories:
Organic Chemistry > Organometallic Compounds

Description

The aluminum alkyls are highly flammable and reactive, colorless to yellow liquids at room temperature. The lighter trialkylaluminums ignite spontaneously in air. They are normally supplied and used in a 20% solution with a hydrocarbon solvent, such as hexane, heptane, benzene, toluene. Properties may depend on solvent. Reacts violently with water.

Liquid

Trimethylaluminum Basic Attributes

Molecular Weight：

72.09

Exact Mass：

72.051964

BRN：

3587197

EC Number：

200-853-0

UNII：

AV210LG46J

UN Number：

3051

DSSTox ID：

DTXSID9058787

HScode：

29319090

Characteristics

PSA：

XLogP3：

1.75140

Appearance：

Clear colorless Liquid

Density：

0.752 g/cm³ @ Temp: 20 °C

Melting Point：

15.4 °C

Boiling Point：

130 °C

Flash Point：

40 °F

Refractive Index：

1.432 (12ºC)

Water Solubility：

Solubility in water: reaction.;soluble in aromatic, saturated aliphatic and cycloaliphatic hydrocarbons.

Storage Conditions：

0-6°C

Vapor Pressure：

69.3 mmHg ( 60 °C)

Toxicity：

Inhalation-Rat LC50: 10000 mg/m3/15 minutes

Flammability characteristics：

It can spontaneously ignite in case of air, chlorine, oxidant and high temperature; emit toxic aluminide gas

Safety Information

Packing level：

Hazard category：

4.3

Transport codes：

UN 3399 4.3/PG 1

wgk germany：

hazard class code：

11-14-17-34-50/53-65-67-14/15-63-48/20-51/53-20-62

safety instructions：

26-36/37/39-45-61-62-6A-43A-24/25-16-43-60-33-25-24

RTECS Number：

BD2204000

Marks：

F,C,N

Storage features：

Treasury ventilated at low temperature and dry; packed with nitrogen; stored separately from oxidant

Stability/Shelf Life：

Spontaneously flammable in air.

Precautionary statement(s)：

P210-P231 + P232-P280-P301 + P310-P302 + P334-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P331-P370 + P378-P422

Hazard Statements：

H225-H250-H260-H304-H314-H336-H361d-H373

Fire Hazards：

Flammable - 3rd degree, Reactive - 3rd degree

GHS Classification：

|Danger|H250 (98.2%): Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids; Pyrophoric solids]|P210, P222, P223, P231+P232, P260, P264, P280, P301+P330+P331, P302+P334, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P335+P334, P363, P370+P378, P402+P404, P405, P422, and P501|Aggregated GHS information provided by 222 companies from 12 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Toxicity

Toxicity class：

moderately toxic

Trimethylaluminum Use and Manufacturing

Uses

Trimethylaluminum is used as an olefin polymerization catalyst and a pyrotechnic fuel. It is also used to produce linear primary alcohols and olefins, etc. It can be used for vapor deposition of metal organic compounds.

Fillers

Production

500,000 - 1,000,000 lb

Manufacturing Info：

All other basic organic chemical manufacturing|Aluminum, trimethyl-: ACTIVE

Use Classification：

Fire Hazards -> Flammable - 3rd degree, Reactive - 3rd degree

Computed Properties

Molecular Weight:72.09
Exact Mass:72.0519637
Monoisotopic Mass:72.0519637
Heavy Atom Count:4
Complexity:8
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Downstream Products

Ethylbenzene

Toluene

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