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Without color; not distinguished by any hue; transparent; as, colorless water.

A limpid, colorless, inflammable liquid from the slow oxidation of alcohol under the influence of platinum black.

and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a peculiar, unpleasant odor, and is produced for use as an illuminating gas in a number of ways, but chiefly by the action of water on calcium carbide. Its light is very brilliant. Watts.

Free from color; colorless; as, in Physiol. Chem., the achromic point of a starch solution acted upon by an amylolytic enzyme is the point at which it fails to give any color with iodine.

Colorless; achromatic.

A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating. Watts.

A colorless, mobile, and very volatile liquid obtained from alcohol by certain of oxidation.

A colorless liquid, C4H8O2, obtained by condensation of two molecules of acetaldehyde: CH3CHO + CH3CHO = H3CH(OH)CH2CO; also, any of various derivatives of this. The same reaction has been applied, under the name of aldol condensation, to the production of many compounds.

A crystalline, transparent, colorless substance found in the allantoic liquid of the fetal calf; -- formerly called allantoic acid and amniotic acid.

A colorless liquid prepared from herring brine and containing amines, used as a local antiseptic.

eight isomeric liquid compounds, C5H11OH; ordinarily, a mixture of two of these forming a colorless liquid with a peculiar cough-exciting odor and burning taste, the chief constituent of fusel oil. It is used as a source of amyl compounds, such as amyl acetate, amyl nitrite, etc.

One of a group of metameric hydrocarbons, C5H10, of the ethylene series. The colorless, volatile, mobile liquid commonly called amylene is a mixture of different members of the group.

; as, amylic ether. Amylic alcohol (Chem.), one of the series of alcohols, a transparent, colorless liquid, having a peculiar odor. It is the hydroxide of amyl. -- Amylic fermentation (Chem.), a process of fermentation in starch or sugar in which amylic alcohol is produced. Gregory.

ed as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colorless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made.

A compound of arsenic and hydrogen, AsH3, a colorless and exceedingly poisonous gas, having and odor like garlic; arseniureted hydrogen.

Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins.…

rmediate in composition between benzoic or benzyl alcohol, and benzoic acid. It is a thin colorless liquid.

e, used as an intestinal antiseptic and as a substitute for creosote in phthisis. It is a colorless crystalline pewder.

fferent forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B.

An oily, colorless fluid, CBr