RES. U. S . MT. OFT.
6 C & E N NOV. 17, 1958
Bright, true colors made from dye Intermediates purified with
DARCO W h a t product, famous for purifying chemicals by removing color bodies, also helps keep colors bright and true . . . b y purifying a colorless chemical?
T h e answer, of course, i s D A R C O Activa ted Carbon. Seems tha t dye intermediates, which may be colorless themselves, contain impurities that could cause false or muddy colors in the finished dye . Intermediate makers find that D A R C O does a first-class job of adsorbing these impurities, preventing unwanted side reactions. They like D A R C O ' S low product retention too, because they get high yield along with efficient purification.
I f you've got a purification problem, try adsorption with D A R C O . It has helped chemical manufacturers get rid of color bodies, odors, colloids, floc-precursors, causes of haze and foam, and other ad-sorbable impurities for over 40 years. We'll be glad to talk over your applicat ion and show you how economically attractive DARCO purification is. Call or -write us today.
• CHEMICALS > # j ^ J l DIVISION
JWITLAS • m POWDER COMPANY
W I L M I N G T O N 9 9 , D E L A W A R E
In Canada: Atlas Powder Company, Canada/ Ltd. Brantford, Ontario, Canada