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Kirk-Othmer Encyclopedia of Chemical Technology

Aluminum Carboxylates

Standard Article

Arthur L. McKenna¹

¹Witco Corporation

DOI: 10.1002/0471238961.0112211313031105.a01
Article Online Posting Date: December 4, 2000

Abstract | Full Text: PDF (71K)

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Abstract

Aluminum salts of carboxylic acids, aluminum carboxylates, may occur as aluminum tricarboxylates (normal aluminum carboxylates), Al(OOCR)₃; monohydroxy (monobasic) aluminum dicarboxylates, (RCOO)₂Al(OH); and dihydroxy (dibasic) aluminum monocarboxylates, RCOOAl(OH)₂. Aluminum carboxylates are used in three general areas: textiles, gelling, and pharmaceuticals. Derivatives of low molecular weight carboxylic acids have been mainly associated with textile applications; those of fatty carboxylic acids are associated with gelling salts; and more complex carboxylates find applications in pharmaceuticals. Commercial products can be combinations of mono-, di-, and tricarboxylates and not just the individual species. Some aluminum carboxylates of commercial interest are monobasic aluminum acetate, C₄H₇AlO₅; dihydroxyaluminum aminoacetate, C₂H₆AlNO₄; aluminum monostearate, C₁₈H₃₇AlO₄; aluminum distearate, C₃₆H₇₁AlO₅; and aluminum tristearate, C₅₄H₁₀₈AlO₆.