Search the Dictionary

A hydrocarbon (C

A hydrocarbon obtained by decomposition of certain piperidine derivatives.

A variety of calcite, or calcium carbonate, consisting of aggregated globular concretions about the size of a pea; -- called also peastone, peagrit.

A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.

A marine gadoid fish (Pollachius carbonarius), native both of the European and American coasts. It is allied to the cod, and like it is salted and dried. In England it is called coalfish, lob, podley, podling, pollack, etc.

ng the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water.

The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye), or as a white crystalline (pearlash).

n Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium).

can be oxidized so as to form a corresponding aldehyde and acid having the same number of carbon atoms; -- distinguished from secondary and tertiary alcohols. -- Primary amine (Chem.), an amine containing the amido group, or a derivative of ammonia in which only one atom of hydrogen has been replaced by a basic radica…

o sodium sulphide by roasting with charcoal, and converting the sodium sulphide to sodium carbonate by roasting with lime. -- Mesne process. See under Mesne. -- Process milling, the process of high milling for grinding flour. See under Milling. -- Reversible process (Thermodynamics), any process consisting of a cycl…

An extinct genus of brachiopods, very characteristic of the Carboniferous rocks.

A heavy gaseous hydrocarbon, C3H8, of the paraffin series, occurring naturally dissolved in crude petroleum, and also made artificially; -- called also propyl hydride.

A hypothetical hydrocarbon radical, C3H5, isomeric with allyl and glyceryl, and regarded as the essential residue of glycerin. Cf. Allyl, and Glyceryl.

The unsymmetrical hypothetical hydrocarbon radical, CH3.CH2.CH, analogous to ethylidene, and regarded as the type of certain derivatives of propane; -- called also propylidene.

A hydrocarbon radical regarded as an essential residue of propine and allied compounds.

A colorless gaseous hydrocarbon (C3H6) of the ethylene series, having a garlic odor. It occurs in coal gas, and is produced artificially in various ways. Called also propene.

A hydrocarbon of the aromatic series, metameric with mesitylene and cumene, found in coal tar, and obtained as a colorless liquid.

rnace in the presence of oxidizing substances, by which it is freed from a portion of its carbon and other impurities. Puddling furnace, a reverberatory furnace in which cast iron is converted into wrought iron or into steel by puddling.

A kind of thick paste or cement compounded of whiting, or soft carbonate of lime, and linseed oil, when applied beaten or kneaded to the consistence of dough, -- used in fastening glass in sashes, stopping crevices, and for similar purposes. Putty powder, an oxide of tin, or of tin and lead in various proportions, much…

One of the less volatile hydrocarbons of coal tar, obtained as a white crystalline substance, C16H10.