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Synonyms: Acid Blue 74, Indigo-5,5'-disulfonic acid disodium salt, Indigocarmine
Indigo carmine, or 5,5'-indigodisulfonic acid sodium salt, also known as indigotine or FD&C Blue #2, is a pH indicator with the chemical formula C16H8N2Na2O8S2.
I 1275 (OTTO) Indigo carmine, GR Cas 860-22-0 - used as a pH indicator, often in a 0.2% aqueous solution. It is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction.
azard Codes Xn
Certificate Of Analysis
(For eg. B 1615-0108)
Other Documents
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62758-13-8
Resazurin, GR
845-10-3
Methyl red sodium salt
10127-02-3
Acridine Orange hemi(zinc chloride) salt, dye content, 90 %
Eosin BA
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