Tripropylalumane

C9H21Al

tripropylalumane

CAS102-67-0
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
Danger

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Identification

CAS Number
102-67-0
EC Number
203-045-6
UN Number
3394
Index Number
013-004-00-2
PubChem CID
16683069

Physical-chemical properties

Molecular Formula
C9H21Al
Molar Mass
156.24 g/mol
IUPAC Name
tripropylalumane

Chemical Identifiers

InChI
InChI=1S/3C3H7.Al/c3*1-3-2;/h3*1,3H2,2H3;
InChI Key
CNWZYDSEVLFSMS-UHFFFAOYSA-N

Overview

Tripropylalumane (CAS 102-67-0) is an organometallic aluminum compound with highly reactive pyrophoric and water-reactive properties. This organoaluminum reagent belongs to the family of trialkylaluminum compounds, characterized by three propyl groups bonded to a central aluminum atom. With a molecular formula of C9H21Al and molecular weight of 156.24 g/mol, tripropylalumane exhibits extreme reactivity toward moisture and oxygen, making it a valuable but hazardous chemical intermediate in specialized industrial applications. The compound presents significant safety challenges due to its classification as a pyrophoric liquid (Pyr. Liq. 1) and water-reactive substance (Water-react. 1), meaning it can spontaneously ignite in air and react violently with water. Its corrosive properties (Skin Corr. 1B) require stringent handling procedures, specialized storage under inert atmosphere, and appropriate personal protective equipment. The GHS hazard pictograms GHS02 and GHS05 reflect its flammable and corrosive nature, while its ADR classification 4.2 indicates requirements for transport as a spontaneously combustible substance. In industrial applications, tripropylalumane serves primarily as a catalyst component in polymerization reactions, particularly in the production of polyolefins where precise control of polymer structure is required. It also functions as an alkylating agent in organic synthesis and as a cocatalyst in Ziegler-Natta polymerization systems. Like other organometallic compounds such as magnesium ethane and sodium methanolate, it requires specialized handling expertise and controlled reaction conditions. OYSI provides tripropylalumane to qualified industrial customers with comprehensive technical support and safety documentation for specialized chemical processes.

Safety & Classification

Danger
Classification:

Pyr. Liq. 1; Water-react. 1; Skin Corr. 1B

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H250

Catches fire spontaneously if exposed to air.

H260

In contact with water releases flammable gases which may ignite spontaneously.

H314

Causes severe skin burns and eye damage.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Skin Contact

Harmful

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number3394
ADR Class4.2
Packing GroupI
Tunnel CodeB/E
Proper Shipping NameTripropylaluminium, flüssig, pyrophor
Marine PollutantNo

Frequently Asked Questions

What is tripropylalumane?

Tripropylalumane is an organometallic compound with the molecular formula C9H21Al and CAS number 102-67-0. It belongs to the family of trialkylaluminum compounds, featuring three propyl groups bonded to a central aluminum atom. With a molecular weight of 156.24 g/mol, this chemical is classified as highly hazardous due to its pyrophoric nature, water-reactive properties, and corrosive effects on skin. It requires careful handling under controlled conditions.

What are the physical and chemical properties of tripropylalumane?

Tripropylalumane is typically a colorless to pale yellow liquid at room temperature with high reactivity characteristics. The compound is extremely sensitive to moisture and air, readily igniting upon contact with oxygen (pyrophoric). It reacts violently with water, releasing flammable gases and heat. The substance is soluble in dry organic solvents but must be stored under inert atmosphere conditions due to its instability in ambient conditions.

What is tripropylalumane used for?

Tripropylalumane is primarily used as a catalyst and co-catalyst in polymerization reactions, particularly in the production of polyolefins. It serves as an alkylating agent in organic synthesis and is employed in the preparation of other organometallic compounds. The substance is also utilized in specialized chemical processes requiring strong Lewis acids and in research applications involving aluminum-carbon bond chemistry.

How to handle tripropylalumane safely?

Tripropylalumane must be handled under inert atmosphere (nitrogen or argon) using appropriate personal protective equipment including chemical-resistant gloves, face shields, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods. Avoid contact with water, moisture, and oxidizing materials. Use non-sparking tools and ensure proper grounding to prevent static electricity buildup. Emergency shower and eyewash stations should be readily accessible.

How to store tripropylalumane correctly?

Tripropylalumane must be stored in tightly sealed containers under dry inert gas atmosphere, away from heat sources, sparks, and flames. Storage areas should be cool, dry, and well-ventilated with temperatures controlled below 25°C. Keep strictly separated from water, alcohols, acids, and oxidizing agents. Containers should be made of suitable materials resistant to the chemical and stored in secondary containment systems to prevent accidental releases.

What to do in case of contact with tripropylalumane?

Tripropylalumane contact requires immediate action due to its corrosive nature. For skin contact, remove contaminated clothing and flush with copious amounts of water for at least 15 minutes, then seek medical attention. In case of eye contact, rinse immediately with water for 15 minutes while holding eyelids open. If inhaled, move to fresh air and provide oxygen if breathing is difficult. Never use water on spills as it causes violent reactions.

How to dispose of tripropylalumane properly?

Tripropylalumane disposal must follow hazardous waste regulations and cannot be disposed of through normal waste streams. The substance should be carefully neutralized by trained personnel using appropriate quenching agents under controlled conditions. Contact licensed hazardous waste disposal companies for proper treatment and disposal. All containers, even empty ones, must be treated as hazardous waste due to residual reactive material and potential fire hazards.

How to transport tripropylalumane?

Tripropylalumane is classified under ADR Class 4.2 (substances liable to spontaneous combustion) with Packing Group I, indicating maximum danger level. Transportation requires specialized packaging meeting UN specifications, proper labeling with GHS02 and GHS05 pictograms, and appropriate shipping documentation. Vehicles must comply with ADR requirements for Class 4.2 materials, and drivers need specialized training for transporting dangerous goods.

Is tripropylalumane subject to specific regulations?

Tripropylalumane is subject to comprehensive chemical safety regulations including REACH registration requirements in Europe and CLP classification as Pyr. Liq. 1, Water-react. 1, and Skin Corr. 1B. While not currently listed as SVHC, it requires safety data sheets, proper labeling with danger signal words, and compliance with occupational exposure limits. Industrial users must implement risk management measures and report usage under applicable chemical safety legislation.

Where to buy tripropylalumane in Europe?

Tripropylalumane is available through specialized chemical distributors in Europe, including OYSI, which supplies high-quality organometallic compounds to industrial customers. Due to its hazardous nature and specialized applications, purchase typically requires technical consultation and compliance verification. Buyers must demonstrate proper handling capabilities, storage facilities, and regulatory compliance before procurement. Contact OYSI for availability, technical specifications, and regulatory support for your specific application needs.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.