Bromine water is an orange solution of bromine. It becomes colourless when it is shaken with an alkene. Alkenes can decolourise bromine water, but alkanes cannot. The slideshow shows this process.

A major advance in alkene oligomerization catalysis was Brookhart’s 1995 report of highly active group 10 metal diimine systems. In contrast to nickel and palladium catalysts, the corresponding ...

Alkene, Olefine, Ethylenkohlenwasserstoffe ... 2) Addition von Halogenen, die bei Zimmertemperatur verläuft, wobei 1,2-Addukte gebildet werden: R-CH=CH-R + Br 2 → R-CH(Br)-CH(Br)-R. Besondere ...

(colorless) (purple) (colorless) (brown ppt.) Reaction of an alkene with aqueous potassium permanganate results in addition of two hydroxyl groups to each side of the double bond to form a glycol. To ...

In an addition reaction, the double bond of the alkene partially breaks when the reactant molecule attacks and adds on across it. Addition of bromine water can be used as a test for unsaturation.