Agent Name

Diisobutylaluminum hydride

CAS Number

1191-15-7

Formula

C8-H19-Al

Major Category

Metals

Synonyms

Al-Alchili [Italian]; Al-Diisobutyl; Aluminum, diisobutylhydro-; Aluminum, hydrobis(2-methylpropyl)-; Aluminum, hydrodiisobutyl-; Bis(isobutyl)hydroaluminum; Dibal-H; Diisobutylaluminium hydride; Diisobutylaluminum; Diisobutylhydroaluminum; Hydrobis(2-methylpropyl)aluminum; Hydrodiisobutylaluminum; [ChemIDplus] UN3051

Category

Metals, Organic Compounds

Description

Colorless liquid; [Hawley]

Sources/Uses

Used as a reducing agent (pharmaceuticals, aldehydes, amides, and olefins), a polymerization catalyst for polyethylene, and an intermediate in silicones, certain polymers, and organic acid synthesis; [HSDB] Organic aluminum compounds are "some of the most important, highest volume, highest value organometallic compounds in production." [Ullmann]

Comments

Spontaneously ignites in air; [Hawley] Stored 25% w/w in hexane; Pyrophoric; Reacts violently with water, evolving extremely flammable gases; A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis and pulmonary edema; May have CNS effects; [MSDSonline] Organoaluminum compounds are corrosive; Harmful if absorbed through the skin or inhaled; The butyl alkyls and below are pyrophoric; Aluminum alkyls are eye irritants; [HSDB] Organic aluminum compounds can cause irritation or burns, depending upon concentration; [Ullmann] TLV withdrawn for aluminum alkyls because of inadequate toxicological data; [ACGIH] See "Aluminum." See "ORGANOMETALS."

Exposure Assessment
Dangerous When Wet

Yes - A material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour; [ERG 2004]

Lethal Concentration

LCLo (guinea pigs) = 70,000 mg/m3/1h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Aluminum alkyls."

Flammability (NFPA)

4: Burns readily

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: