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Indigo carmine, or 5,5′-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by sulfonation, which renders the compound soluble in water. It is approved for use as a food colorant in the U.S and E.U.It has the E number E132. It is also a pH indicator. Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction. Another use is as a dissolved ozone indicator through the conversion to isatin-5-sulfonic acid. This reaction has been shown not to be specific to ozone, however: it also detects superoxide, an important distinction in cell physiology] It is also used as a dye in the manufacturing of capsules.

GLOBAL COLORCHEM – A Company with Passion for colors
Welcome to GLOBAL COLORCHEM. GLOBAL COLORCHEM presents you full range of world class SYNTHETIC AND NATURAL FOOD COLORS, FOOD FLAVORS, EMULSION FLAVORS, COLORS FOR BAKERIES AND CONFECTIONARIES, FOOD ADDITIVES, FOOD AND PHARMA CHEMICALS. All Our incredible, class apart ,well researched products will surely draw your attention once you give us the opportunity to reach you. Driven by high values and business ethics our only vision and misson is to grow with your whole hearted support and move forward hand in hand in years to come.
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