Aluminum sec -butanolate

Structural formula
General
Surname	Aluminum sec -butanolate
other names	Of aluminum- sec butoxide Aluminum tri- sec -butoxide Aluminum sec -butoxide Aluminum tri- sec butoxide Aluminum sec -butylate Aluminum butan-2-olate
Molecular formula	C 12 H 27 AlO 3
Brief description	Flammable, yellowish liquid with an alcohol-like odor
External identifiers / databases
CAS number 2269-22-9 EC number 218-871-2 ECHA InfoCard 100.017.157 PubChem 61289 Wikidata Q27277944
properties
Molar mass	246.33 g · mol -1
Physical state	Liquid
density	0.96 g · cm 3 -1
boiling point	200-206 ° C at 40 hPa 180-182 ° C at 5 hPa
Vapor pressure	23 hPa at 195  ° C
solubility	Soluble in ethanol , isopropyl alcohol and toluene
Refractive index	1.4390
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 226-302-311 P: 280-302 + 352
Toxicological data	401 mg · kg -1 ( LD 50 ,  rat ,  orally ) 402 mg · kg -1 ( LD 50 ,  rabbit ,  transdermally )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Aluminum sec- butanolate (ASB) is the alcoholate salt made from aluminum and sec- butanol .

Extraction and presentation

Aluminum sec- butanolate can be produced by the reaction of aluminum and sec- butanol. It is a common production method for alcoholates. Either pure aluminum or aluminum dross can be used as the substrate. In the latter case, a purification, e.g. B. by means of vacuum distillation . The reason for this is the fact that aluminum dross contains a wide variety of impurities.

${\displaystyle {\ce {2 Al + 6 C4H10O -> 2 C12H27AlO3 + 3 H2}}}$

properties

Aluminum sec -butanolate is a flammable, slightly yellowish, oily liquid. Vapors can form explosive mixtures when heated above its flash point (26  ° C with closed cup). It is hygroscopic , sensitive to air and moisture and decomposes in water. The container should always be closed and kept in a dry and well-ventilated area. Aluminum sec -butanolate is not compatible with strong oxidants, acids, metals or halogens. Acute and chronic health hazards are possible. The lower explosion limit (LEL) is 1.7 % by volume and the upper explosion limit (UEL) is 9.8 % by volume . The ignition temperature is 406  ° C , temperature class T2.

use

Uses include the production of photosensitive alumina gel films; microporous, crystalline aluminophosphate AlPO-41 and pure mesoporous aluminum materials by hydrolysis with aluminum sec -butanolate as starting material. It is also an active catalyst and reduces aldehydes and ketones .

Individual evidence

1. ↑ ^{a b c d e f g h i j k} Entry on aluminum tri-sec-butanolate in the GESTIS substance database of the IFA , accessed on March 28, 2018(JavaScript required) .
2. ↑ ^{a b c} data sheet aluminum tri-sec-butoxide from Sigma-Aldrich , accessed on March 28, 2018 ( PDF ).
3. ↑ ^{a b c d} data sheet aluminum sec-butoxide from AlfaAesar, accessed on March 28, 2018 ( PDF )(JavaScript required) .
4. ↑ S.-J. Yoo et al .: Synthesis and characterization of high purity aluminum sec-butoxide from aluminum dross . In: Korean Journal of Chemical Engineering . tape 26 , 2009, p. 281-284 , doi : 10.1007 / s11814-009-0048-3 .
5. ↑ G. Zhao et al .: Preparation of Photosensitive Al ₂ O ₃ Gel Films and Their Application to Fine-Patterning . In: Kobunshi Ronbunshu . tape 53 , 1996, pp. 253-259 , doi : 10.1295 / coron . 53.253 .
6. ↑ HW Clark et al .: Synthesis and characterization of AlPO-41 in a mixed solvent system . In: Microporous Materials . tape 6 , 1996, pp. 115-124 , doi : 10.1016 / 0927-6513 (95) 00084-4 .
7. ^ F. Vaudry et al .: Synthesis of Pure Alumina Mesoporous Materials . In: Chemistry of Materials . tape 8 , 1996, pp. 1451-1464 , doi : 10.1021 / cm9600337 .
8. ↑ CJ Serna et al .: Hydrolysis of aluminum-tri- (sec-butoxide) in ionic and nonionic media . In: Clays and Clay Minerals . tape 25 , 1977, pp. 384-391 , doi : 10.1346 / CCMN.1977.0250603 .