See also:action of allowing, or the thing allowed; particularly, a certain limited
See also:apportionment of
See also:money or
See also:food and
See also:diet (see
See also:DIETARY) . In commercial usage "
See also:allowance" signifies the deduction made from the
See also:weight of goods to make up for the weight of the box or package, waste, breakages, &c . Allowance, which is customary in most
See also:industries, varies according to the
See also:district or
See also:country; e.g. in the
See also:coal trade it is customary for the
See also:merchant to receive from the
See also:pit 21 cwts. of coal for every ton
See also:purchased by him, the difference of 1 cwt. being the allowance for the purpose of making
See also:good the waste caused through transhipment, screening and cartage (see TARE AND TRET.) ALLO%AN, or MESOXALYL
See also:UREA, C4H2N204 or CO/NH– C0NCO. an oxidation product of uric acid, being \NH—CO/ obtained from it by the action of
See also:cold nitric acid, C5H4N403 +
See also:H2O + 0= C4H2N204 + CO(
See also:NH2)2 . It crystallizes from
See also:water in colourless rhombic prisms, containing four molecules of water of
See also:crystallization, and possesses a very acid reaction . It serves as the starting-point for the preparation of many related substances .
See also:Zinc and hydrochloric acid in the cold convert it into
See also:alloxantin (q.v.),
See also:hydroxylamine gives nitroso-barbituric acid, C4H2N203: NOH, baryta water gives alloxanic acid, C4H4N205, hot dilute nitric acid oxidizes it to parabanic acid (q.v.), hot potassium hydroxide solution hydrolyses it to urea and mesoxalic acid (q.v.) and zinc and hot hydrochloric acid convert it into dialuric acid, C4H4N204 . M . Nencki has shown that alloxan combines with thiourea in alcoholic solution, in the presence of
See also:sulphur dioxide to
See also:form pseudothiouric acid, C5H6N4SO3 . Methyl and dimethylalloxans are also known, the former being obtained on oxidation of methyl uric acid, and the latter on oxidation of caffeine (q.v.) .
ALLOTROPY (Gr. liXXor, other, and rpo7ros, manner)
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