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Aleuritic Acid (Shellac Aleuritic Powder)
 

Aleuritic Acid (9, 10, 16-trihydroxypalmitic acid), obtained from shellac by saponification, is a unique acid containing three hydroxyl groups of which two are of adjacent carbon atoms.

Aleuritic Acid is moderately soluble in hot water and crystallises out on cooling the solution. It is soluble in the lower alcohols such as methyl, ethyl and isopropyl alcohols. 

Techinal grade Aleuritic Acid (purity 99%) a slight yellow and almost odourless solid, is now manufactured by us. There is a continuous growing demand of aleuritic acid in the fields of perfumery and pharmaceuticals due to it being an excellent starting material for the synthesis of civetone, ambrettolide, isoambrettolide etc, which have the musk like odour.


Civetone
 
Civetone is obtained from Shellac Aleuritic Acid, and is used for manufacturing of Perfumes. Civetone is fast growing and is very much in demand with perfume manufacturing companies such as France, Italy, Germany, USA etc.

Physical properties
White powder or granuals. Moderately soluble in hot water and in lower alcohol such as methyl alcohol, ethyl alcohol and isopropyl alcohol.

Chemical properties
Moisture 1% Acid value Melting point 90 to 98 depending upon requirement Molecular weight Specific gravity Chemical indentification 9,10,16 trihydroxy palmitic acid

Uses and Applications
Synthesis of fragrances such as civetone, exaltone, ambrettolide and isoambrettolide. Synthesis of glucose manoaleuritate. The other suggested applications of aleuritic acid are the following:

  • Glucose manoaleuritate (a non-toxic non-hemolytic water-soluble compound) in medicine as an isocaloric substitute for dietary tripalmitin.

  • Preparation of plastics with good adhesive properties by the condensation of aleurtic acid with Pithalic andydride and glycerin, rosin etc.

  • Aleuritic esters for compounding with cellulose esters for the preparation of lacquers, plastics and fibres.

Chemical Structure

Specification of Aleuritic Acid

Acid Value

168-178

Melting Point

96±1șC

Molecular Weight

Approx 304

Specific Gravity

1.114

Moisture

1% max.

Appearance

White Powder

Appearance in Alcohol

Clear