bromine still

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• Bromine number — is the amount of bromine in grams absorbed by 100 grams of a sample. The number indicates the degree of unsaturation. The Bromine Number is useful as a measure of aliphatic unsaturation in gasoline samples. The ARB, in its Motor Vehicle Fuels… …   Wikipedia

• bromine — /broh meen, min/, n. Chem. an element that is a dark reddish, fuming, toxic liquid and a member of the halogen family: obtained from natural brines and ocean water, and used chiefly in the manufacture of gasoline antiknock compounds,… …   Universalium

• chemical industry — Introduction       complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives.       Although the chemical industry may be described simply as the industry that uses chemistry and… …   Universalium

• Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …   Universalium

• Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… …   Wikipedia

• Metalloid —   13 14 15 16 17   2  B Boron …   Wikipedia

• Herbert Henry Dow — (February 26, 1866 Belleville, Ontario, Canada – October 15, 1930) was a Canadian born, American chemical industrialist. He attended the Case Institute of Technology in Cleveland, Ohio, where he became a member of the Phi Kappa Psi fraternity.… …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of …   Wikipedia

• Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …   Wikipedia