100-99-2 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 100-99-2 differently. You can refer to the following data:
1. clear colorless to light yellow solution
2. 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.
Uses
Different sources of media describe the Uses of 100-99-2 differently. You can refer to the following data:
1. Polyolefin catalyst, manufacture of primary
alcohols and olefins, pyrophoric fuel.
2. Triisobutylaluminum is used as a reducingagent. It is also used in combinationwith transition metal compounds as aZiegler-Natta catalyst in polymerization andhydrogenation reactions. A dilute solution ofthe compound is employed in commercialapplications.
3. Triisobutylaluminium is a useful reagent for preparing anti-corrosive coating materials.
Definition
A mixture of isomers
readily prepared by polymerizing isobutylene. A
typical mixture is 2,2,4,6,6-pentamethylheptane-
3 and 2-neopentyl-4,4-dimethylpentene-1. May be
depolymerized to simpler isobutylene derivatives.
Air & Water Reactions
Pyrophoric. Reacts violently with water producing flammable gas [Rose 1961].
Reactivity Profile
Triisobutylaluminium reacts violently with alcohols, phenols, amines, carbon dioxide, sulfur oxides, nitrogen oxides, halogens, and halogenated hydrocarbons, causing fire and explosion hazards [Handling Chemicals Safely 1980. p. 937].
Health Hazard
Different sources of media describe the Health Hazard of 100-99-2 differently. You can refer to the following data:
1. Inhalation of smoke from fire causes metal-fume fever (flu-like symptoms). Contact with liquid can cause severe burns of eyes and skin because of spontaneous ignition.
2. Being moisture sensitive, the pure liquid orits concentration solution can cause serverburns to the skin.
Fire Hazard
It is a highly pyrophoric compound, igniting
spontaneously in air. The flash point
is measured to be －18°C ( －1°F) (Aldrich
1996). A 1.0 M solution in hexane or toluene
is pyrophoric too. It decomposes explosively
with water. Reactions with lower alcohols,
halogenated hydrocarbons, halogens,
and common oxidizing substances can be
violent or explosive. Triisobutylaluminum is
thermally less stable than triethylaluminum,
decomposing above 50°C (122°F), producing
isobutene and hydrogen.
Safety Profile
A poison. Extremely
destructive to living tissue. A very dangerous
fire hazard; ignites on exposure to air.
Incompatible with moisture, acids, air,
alcohols, amines, halogens. To fight fire, use
CO2, dry sand, dry chemical. Do not use
water, foam, or halogenated extinguishing
agents. When heated to decomposition it
emits acrid smoke and irritating fumes.
Potential Exposure
Alkyl aluminum compounds are used as components of olefin polymerization catalysts. They are also used in the synthesis of higher primary alcohols and in pyrophoric fuels, as a catalyst in making ethylene gas; and in plating aluminum.
Shipping
ntial fire or explosion hazard. Shipping: UN3399 Organometallic substance, liquid, water-reactive, flammable, Hazard Class: 4.3; Labels: 4.3
Dangerous Dangerous when wet material, 3-Flammable liquid, technical name Required. UN3051-Spontaneously combustible. Also, this material is dangerous when wet. (Note: this number does not appear in the 49/CFR HazMat tables).
Incompatibilities
The lighter trialkylaluminums ignite spontaneously in air; can self-heat in the air at room temperature without any added energy and may ignite. These compounds are strong reducing agents. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Incompatible with water, oxygen (air), acids, alcohols, phenols, amines, carbon dioxide; sulfur oxides; halogenated compounds, and many other substances
Waste Disposal
Careful incineration
Check Digit Verification of cas no
The CAS Registry Mumber 100-99-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 100-99:
(5*1)+(4*0)+(3*0)+(2*9)+(1*9)=32
32 % 10 = 2
So 100-99-2 is a valid CAS Registry Number.
InChI:InChI=1/3C4H9.Al/c3*1-4(2)3;/h3*4H,1H2,2-3H3;/rC12H27Al/c1-10(2)7-13(8-11(3)4)9-12(5)6/h10-12H,7-9H2,1-6H3
100-99-2Relevant articles and documents
Die Reaktion des Tri(isobutyl)alans mit Kalium-eine Neuuntersuchung; Kristallstruktur des Kalium
Uhl, Werner,Wagner, Juergen
, p. 151 - 160 (1992)
The synthesis of hexa(isobutyl)dialanate with an aluminium-aluminium bond from tri(isobutyl)alane and potassium is described in the literature.We have repeated this reaction under the conditions given, but have not been able to trace the dialanate.Instead
Structural characterization of Al10O6 iBu16(μ-H)2, a high aluminum content cluster: Further studies of methylaluminoxane (MAO) and related aluminum complexes
Wu, Feng-Jung,Simeral, Larry S.,Mrse, Anthony A.,Eilertsen, Jan L.,Negureanu, Lacramioara,Gan, Zhehong,Fronczek, Frank R.,Hall, Randall W.,Butler, Leslie G.
, p. 44 - 47 (2007)
The first structurally characterized isobutyl-containing aluminoxane compound is presented. The Al10O6iBu 16(μ-H)2 (I) cluster is produced from neat octakis-isobutyltetraluminoxane (Al4O2iBu 8) at 80°C in 6-8 h followed by slow crystallization. The crystal is triclinic (space group P1) with the molecule lying on an inversion center. This aluminoxane contains both nearly linear, 154(2)°, aluminum-bridging hydrides and three-coordinate aluminum sites. Solid-state 27Al magic-angle spinning (MAS) NMR experiments were done at 19.6 and 40 T (833 MHz and 1.703 GHz, 1H) and at 30-35 kHz spinning speeds, leading to the determination of the Cq and η values for the two four-coordinate Al sites and a lower limit of Cq for the three-coordinate Al site. Geometry-optimized restricted Hartree-Fock calculations at the double-ζ level of an idealized structure (methyl substituted, D2h geometry) yielded Cq and η in close agreement with experiment; C q agrees within 3 MHz.
General copper-catalyzed coupling of alkyl-, aryl-, and alkynylaluminum reagents with organohalides
Shrestha, Bijay,Thapa, Surendra,Gurung, Santosh K.,Pike, Ryan A. S.,Giri, Ramesh
, p. 787 - 802 (2016/02/18)
We report the first example of a very general Cu-catalyzed cross-coupling of organoaluminum reagents with organohalides. The reactions proceed for the couplings of alkyl-, aryl-, and alkynylaluminum reagents with aryl and heteroaryl halides and vinyl bromides, affording the cross-coupled products in good to excellent yields. Both primary and secondary alkylaluminum reagents can be utilized as organometallic coupling partners. These reactions are not complicated by β-hydride elimination, and as a result rearranged products are not observed with secondary alkylaluminum reagents even for couplings with heteroaryl halides under "ligand-free" conditions. Radical clock experiment with a radical probe and relative reactivity study of Ph3Al with two haloarenes, 1-bromonaphthalene and 4-chlorobenzonitrile, having two different redox potentials indicates that the reaction does not involve free aryl radicals and radical anions as intermediates. These results combined with the result of the Hammett plot obtained by reacting Ph3Al with iodoarenes containing p-H, p-Me, p-F, and p-CF3 substituents, which shows a linear curve (R2 = 0.99) with a ρ value of +1.06, suggest that the current transformation follows an oxidative addition-reductive elimination pathway.
Transition metal compound having indenyl-containing metallocene
-
, (2008/06/13)
The novel transition metal compound of the invention is represented by the following formula (I): STR1 wherein M is a transition metal; R1 is a hydrocarbon group of 2 to 6 carbon atoms, R2 is an aryl group of 6 to 16 carbon atoms; X1 and X2 are each a halogen atom or the like; and Y is a divalent hydrocarbon group, a divalent silicon-containing group or the like. An olefin polymerization catalyst component of the present invention comprises the aforementioned transition metal compound.
Polymerization of olefins in the presence of a supported catalyst
-
, (2008/06/13)
A supported catalyst component for an olefin polymerization catalyst comprising a solid particulate support, a magnesium halide, and optionally a Group 4 or 5 transition metal compound, a Group 2 or 13 organometal compound, and an electron donor, wherein a majority of particles of the solid particulate support is in the form of an agglomerate of subparticles. A process for preparing this supported catalyst component. A catalyst composition comprising this catalyst component and a cocatalyst. An olefin polymerization process using such a catalyst composition.
