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chain compound

(Encyclopedia)chain compound: see aliphatic compound. ...

CS, chemical compound

(Encyclopedia)CS, chemical compound (orthochlorobenzalmalonitrile) used in riot control and, by the military, as a harassing agent. The compound is dispersed as an aerosol or as a finely divided powder. Exposure to...

compound eye

(Encyclopedia)compound eye: see eye.

open-chain compound

(Encyclopedia)open-chain compound: see aliphatic compound. ...

decay of organic matter

(Encyclopedia)decay of organic matter or putrefaction, process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-living tissue as a ...

magnesia, chemical compound

(Encyclopedia)magnesia, common name for the chemical compound magnesium oxide, MgO. It occurs as colorless, cubic crystals. It is refractory, melting at about 2,800℃. It is very slightly soluble in pure water but...

Sabatier, Paul, French organic chemist

(Encyclopedia)Sabatier, Paul, 1854–1941, French organic chemist, D.Sc. Collège de France, 1880. He joined the faculty at the Univ. of Toulouse in 1882 and taught there until he retired in 1930. Sabatier was a co...

salt, chemical compound

(Encyclopedia)salt, chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases). Salts are also prepared by methods other than neutralization. A metal can c...

An Najaf

(Encyclopedia)An Najaf än näˈjäf [key], city (2020 pop. 874,000), S central Iraq, on a lake near the Euphrates River. The city, one of Shi'a Islam's holiest, is also called Mashad A...

Xi'an

(Encyclopedia)Xi'an shēˈänˈ, sēˈ– [key], city (1994 est. pop. 2,114,900), capital of Shaanxi prov., China, in the Wei River valley. Situated on the Longhai RR, China's principal east-west line, it is an imp...