Title: Aluminum Chloride
CAS Registry Number: 7446-70-0
Molecular Formula: AlCl3
Molecular Weight: 133.34
Percent Composition: Al 20.24%, Cl 79.77%
Literature References: Prepd from aluminum metal in a heated stream of HCl gas: Gattermann-Wieland, Praxis des Organischen Chemikers (de Gruyter, Berlin, 40th ed., 1961) p 295; H. J. Becher in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 812. Manufacture: Faith, Keyes & Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 72-75. Monograph: ACS Monograph Series no. 87, entitled "Anhydrous Aluminum Chloride in Organic Chemistry," C. A. Thomas, Ed. (Reinhold, New York, 1941).
Properties: White when pure; ordinarily gray or yellow to greenish. Fumes in air; strong odor of HCl; when heated in small quantities volatilizes without melting. Combines with water with explosive violence and liberation of much heat. Freely sol in many organic solvents, such as benzophenone, benzene nitrobenzene, carbon tetrachloride, chloroform. Keep tightly closed and protected from moisture. For physical properties see C. A. Thomas, loc. cit.
Derivative Type: Hexahydrate
CAS Registry Number: 7784-13-6
Trademarks: Anhydrol (Dermal); Driclor (Stiefel); Drysol (Person & Covey); Xerac (Person & Covey)
Properties: Colorless crystals, or white or slightly yellow deliquesc, cryst powder; odorless or slight HCl odor. One gram dissolves in 0.9 ml water, 4 ml alc; sol in ether, glycerol, propylene glycol. Keep well closed.
CAUTION: Anhydrous form is a strong irritant.
Use: The anhydrous form suitable as an acid catalyst, esp in Friedel-Crafts type reactions; in cracking of petroleum; in manuf rubbers, lubricants. The hexahydrate form used in preserving wood; disinfecting stables, slaughterhouses, etc.; in deodorants and antiperspirant preparations; refining crude oil; dyeing fabrics; manuf parchment paper.
Therap-Cat: The hexahydrate as anhidrotic.
Keywords: Astringent. |