Myricyl palmitate

Methyl oxalate (p. loi) Cet l palmitate (Spermaceti). .. Myricyl palmitate (Bees... 

The chemical components of beeswax are alkyl esters of monocarboxylic adds (71-72%), choiesteryi esters (0.6-0.8%), coloring matter (0.3%), lactone (0.6%), free alcohols (1 — 1-1%), free wax acids (13.5-14.5%), hydrocarbons (10.5-11.5%), moisture and mineral impurities (0.9-2%). Myricyl palmitate (C46H92O2) is the principal constituent of the simple alkyl esters (49—53%) the simple esters include alkyl esters of unsaturated fatty acids. The complex esters include hydroxylated esters the chief component of which is believed to be ceryl hydroxypalmitate, CudlmOj. The principal free wax acid component is ceiotic acid (C26H52O2). The principal hydrocarbon is hentriacontane (C3iHm). 

Waxes are also esters of fatty acids. However, the alcohol in a wax is not glycerol it is often a very long chain alcohol. For example, one of the main compounds in beeswax is myricyl palmitate,... 

Beeswax, White, occurs as a yellow-white solid, somewhat translucent in thin layers, with a faint, characteristic odor, free from rancidity. It is the bleached, purified wax from the honeycomb of the bee Apis mellifera L. (Fam. Apidae), and it consists primarily of myricyl palmitate (myricin), cerotic acid and ester, and some high-carbon paraffins. Its specific gravity is about 0.95. Beeswax, White, is insoluble in water and sparingly soluble in cold alcohol. Boiling alcohol dissolves cerotic acid and part of the myricin. It is completely soluble in chloroform, in ether, and in fixed and volatile oils. It is partly soluble in cold carbon disulfide and is completely soluble in it at temperatures of 30° or above. 

Beeswax consists of 70-75% of a mixture of various esters of straight-chain monohydric alcohols with even-numbered carbon chains from C24 to C36 esterified with straight-chain acids. These straight-chain acids also have even numbers of carbon atoms up to 35 together with some Cig hydroxy acids. The chief ester is myricyl palmitate. Also present are free acids (about 14%) and carbohydrates (about 12%) as well as approximately 1 % free wax alcohols and stearic esters of fatty acids. 

A wax found in beeswax is myricyl palmitate. What fatty acid and what alcohol are used to form ttiis compound ... 

Myricyl palmitate (beeswax) is made up of the fatty acid palmitic acid and the alcohol myricyl alcohol— CH3(CH2)2sCH20H. 

Beeswax which contains myricyl palmitate, paraffins, cerotic acid, and esters. 

The UVCB definition for this substance is The wax obtained from the honeycomb of the bee. It consists primarily of myricyl palmitate, cerotic acid and esters and some high-carbon paraffins. Although the method of isolation or purification is not stated in the definition, the listing assumes that other than mechanical means were used this substance is not a natural product for purposes of TSCA. ... 

Waxes are another class of lipids. Like fats and phospholipids, waxes are esters, but unlike these other lipids, they involve monohydroxy alcohols instead of glycerol. For example, beeswax, a substance secreted by the wax glands of bees, is mainly myricyl palmitate,... 

Waxes are esters of fatty acids with alcohols other than glycerol, such as myricyl alcohol (1-triacontanol, CsoHeiOH). Beeswax, from the honeycomb of bees, is chiefly myricyl palmitate. Carnauba wax, used in shoe polish and floor waxes, is a mixture of myricyl alcohol, cerotic acid (C26H53COOH), and myricyl cerotate. 

In some cases the fatty acids are combined with other bases than glycerol. As examples may be cited beeswax, containing myricin or myricyl palmitate, and spermaceti, consisting chiefly of cetin or cetyl palmitate, and herein lies the essential difference between fats and waxes, but as these substances are not soap-making materials, though sometimes admixed with soap to accomplish some special object, they do not require further consideration. 

C6H12 Acetone Myricyl palmitate Styrene Air Formula X... 

Palmitic Acid, CH3(CH2)i4.COOH, m.p. 62° C., occurs in many plant and animal fats and waxes, especially palm oil, Japan wax, and myrtle wax. It is present in spermaceti as cetyl palmitate and in beeswax as myricyl palmitate. The acid is insoluble in water, slightly soluble in cold alcohol, and easily soluble in hot or boiUng alcohol. 

Beeswax, secreted by the honey-bee during digestion, is used for building the comb. It is chiefly myricyl palmitate, and is largely employed in the manufacture of polishes. 

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