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.

6 (Xinhua) -- Jordan's Arab Potash Company (APC) signed on Monday an 813-million-U.S. dollar joint investment agreement with U.S. chemical manufacturing company Albemarle to boost bromine ...