wax

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wax,

substance secreted by glands on the abdomen of the bee and known commonly as beeswax; also various substances resembling beeswax. Waxes are mixtures comprising chiefly esters of monohydroxy alcohols, besides other esters and free fatty acids, free alcohols, and higher hydrocarbons. They differ from fats in that fats contain chiefly esters of glycerol. Waxes are generally harder and less greasy than fats, but like fats they are less dense than water and are soluble in alcohol and ether but not in water. Among the waxes derived from plants are carnauba wax, obtained from the leaves of a palmpalm,
common name for members of the Palmae, a large family of chiefly tropical trees, shrubs, and vines. Most species are treelike, characterized by a crown of compound leaves, called fronds, terminating a tall, woody, unbranched stem.
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 grown in Brazil, and candelilla wax, produced by a Mexican plant (Euphorbia antisyphilitica). Those of animal origin include wool wax, or lanolin, obtained from the surface of wool fibers and used in making certain creams, ointments, and soaps, in the processes of finishing and softening leather, and as an ingredient of some paints and varnishes; spermacetispermaceti
, solid waxy substance, white, odorless, and tasteless, separated from the oils obtained from the sperm whale (see sperm oil) and other marine mammals. A mixture of esters of fatty acids, it is composed chiefly of cetyl palmitate.
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, obtained from the sperm whale, and Chinese wax, which is deposited on certain trees in parts of Asia (especially China and India) by a species of scale insect. Mineral waxes include ozocerite and paraffinparaffin,
white, more-or-less translucent, odorless, tasteless, waxy solid. It melts between 47°C; and 65°C; and is insoluble in water but soluble in ether, benzene, and certain esters. Paraffin is unaffected by most common chemical reagents but burns readily in air.
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, both composed of hydrocarbons. Japan wax and bayberry (or myrtle) wax are composed chiefly of fats.

Bibliography

See L. Roth and J. Weiner, Waxes, Waxing and Wax Modifiers (1961); H. Bennett, Industrial Waxes (2 vol., 1963); P. E. Kolattukudy, ed., Chemistry and Biochemistry of Natural Waxes (1976).

wax

[waks]
(materials)
Any of a group of substances resembling beeswax in appearance and character, and in general distinguished by their composition of esters and higher alcohols, and by their freedom from fatty acids.

wax

A thermoplastic solid material obtained from vegetable, mineral, and animal matter; soluble in organic solvents; used in paste or liquid form as a protective coating or polish on wood and metal surfaces and as an additive in paints.

wax

1. any of various viscous or solid materials of natural origin: characteristically lustrous, insoluble in water, and having a low softening temperature, they consist largely of esters of fatty acids
2. any of various similar substances, such as paraffin wax or ozocerite, that have a mineral origin and consist largely of hydrocarbons
3. short for beeswax, sealing wax
4. Physiol another name for cerumen
5. a resinous preparation used by shoemakers to rub on thread
6. bone wax a mixture of wax, oil, and carbolic acid applied to the cut surface of a bone to prevent bleeding
References in periodicals archive ?
Asimismo, en el ACP en la Figura 4 que corresponde al grafico de factores individuales, se puede observar que los tratamientos CERA-F y GOMLACA-A que corresponde al recubrimiento de cera de la marca Hortiwax[R] almacenado en frio y Goma Laca almacenado a temperatura ambiente son los mas cercanos al CP 1, el cual muestra una varianza del 96.25% de los datos; caso contrario con los tratamientos TESTIGOA y SUSTGOMGUAR-A, que corresponden al testigo almacenado a temperatura ambiente y al tratamiento de Sustituto de Goma Guar almacenado a temperatura ambiente.
The court heard that Cera, of Princes Park Close in Hayes, was found with 26 wraps of cocaine, each with half a gram of the drug.
Anastasiades said that CERA's efforts in the area of market liberalisation and tariff regulation benefit consumers and added that all matters related to natural gas are going into the right direction through planning.
Esto fue evidente en el caso del arbol de la cera, el cual fue sujeto de varios analisis cientificos entre 1826 y 1857.
La perdida de peso acumulada durante las observaciones alcanzo un 1,86% en la fruta con tratamiento termico (TH) y con cera de abejas y aceite de palma, y un 2,04 % en la fruta con tratamiento termico (TH) y cera de mezcla de acidos grasos, sin diferencias estadisticas entre estos tratamientos (p<=0,05 segun prueba LSD Fisher).
Cera and Culkin first performed the play in Australia in 2012 and added Gevinson and director Anna D.
Cera served as parish priest of Las PiAaAaAeA~as until May 1832 when he cou no longer carry out his duties after a severe illness.
The interactions between Cera's uptight tourist and Crystal Fairy's Earth goddess in this largely improvised film prompt most of the laughs and the gang's psychedelic experience is a hoot.
Peppered with delightfully scattershot humour (the full title, Crystal Fairy & The Magic Cactus And 2012, gives a hint to its wackiness), it also has a vaguely serious side, though it is best remembered for Cera's drug-fuelled antics and Hoffmann's naked yoga out in the desert.
Michael Cera and Mary elizabeth Winstead star in this comedy
Considerando o exposto, este trabalho teve por objetivos: (i) verificar o efeito antagonico de agentes de controle biologico (ACBs); (ii) estudar as interacoes in vitro entre ACBs e o fitopatogeno; (iii) verificar o efeito da integracao dos antagonistas com bicarbonato de sodio e cera de carnauba no controle do bolor verde.
Para la realizacion de este estudio se utilizaron raices de yuca de las variedades HMC-1 y MPER 183, y como recubrimientos parafina china y cera Fresh Root[R] (TAO QUIMICA).