Nomenclature
CAS number: 555-31-7
2-Propanol aluminum salt (3:1); aluminum isopropylate.
C
9H
21AlO
3; mol wt 204.24.
C 52.93%, H 10.36%, Al 13.21%, O 23.50%.
Al[OCH(CH
3)
2]
3.
Description and references
Prepd from aluminum and isopropyl alcohol in
the presence of mercuric chloride: Young et al., J. Am. Chem. Soc. 58, 100 (1936); by adding excess isopropyl
alcohol to a benzene soln of AlCl3 at 6°: Teichner, Compt. Rend. 237, 810 (1953). Forms trimers and tetramers:
Shiner et al., J. Am. Chem. Soc. 85, 2318 (1963); Oliver et al., J. Inorg. Nucl. Chem. 31, 1609 (1969); Worrall, J. Chem. Educ. 46, 510 (1969). Toxicity: Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969). Review: Whitaker in Adv. Chem. Ser. 23, entitled “Metal-Organic
Compounds,” M. Sittig, Ed. (ACS, Washington DC, 1959) pp 184-189.
Properties
Hygroscopic white solid, mp 119°. Solidifies rather slowly after distillation.
bp10 135°; bp7.5 131°; bp5.5 125.5°; bp2.5 113°; bp1.5 106°; bp0.5 94°. Sol in ethanol, isopropanol, benzene, toluene, chloroform,
carbon tetrachloride, petroleum hydrocarbons. Decomposed by water.
LD50 orally in
rats: 11.3 g/kg (Smyth).Use
Meerwein-Ponndorf reactions; alcoholysis and ester
exchange; synthesis of higher alkoxides, chelates, and acylates; formation
of aluminum soaps, formulation of paints; waterproofing finishes for
textiles.