Page 16 Advertisement 1

New Zealand Listener, Volume 30, Issue 760, 12 February 1954, Page 16

BR 0 MIN E I ancient Rome, purple was the sign of Imperial rank The dye they used for colouring their robes came from a sea- snail called murex brandaris, found in the Mediterranean. This dye is now known to be a compound of the element bromine the only bromine compound ever found in a living organism. Bromine, a brown, fuming liquid related chemically to the greenish-yellow gas chlorine; is highly corrosive and dangerous to handle. Its name derives from the Greek Bpcpos' ~a stench. Most of the bromine needed by industry today is, like that used by the Romans; extracted from seawater, but the extrac- tion process is carried out by chemists instead of by sea-snails During the war ICI: helped to develop a factory in Cornwall where bromine is extracted from seawater to make ethylene dibromide-a chemical used with tetra-ethyl lead in the produc- tion of anti-knock petrol. Photography needs silver bromide, which is used in practically all films and plates and many kinds of photographic paper; methyl bromide is employed in one type of modern fre extinguisher, and potassium bromide in medicine ICI: uses bromine compounds to make some of the "Caledon" and Durindone dyestuffs used for the dyeing of cotton. ICL IMPERIAL CHEMICAL INDUSTRIES (NZ) LTD: PILLY pvckLinG C 0 U G H P A StILE $ ES P E C |ALLY F 0 R KID D | E $ Mothers, they're flavoured to their liking, Glucose coated socthing, and cen be taken freely. Your CHEMIST will be pleased to show You these laboratory produced pastilles in beautifully coloured tin con- tainers. Simpkins" M/3D1. Glucose Products Distributors ALSO ASk FOR SIMPKINS Muir & Neil Pty. Ltd., GLUCOSE & HALIBUT Auckland: BARLEY SUGAR