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Synonyms: Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y
Congo red is the sodium salt, It is a secondary diazo dye. Congo red is water-soluble, yielding a red colloidal solution; its solubility is better in organic solvents such as ethanol.
C 5711 (OTTO) Congo red, certified Cas 573-58-0 - used to stain microscopic preparates, especially as a cytoplasm and erythrocyte stain.
WGK Germany 3
Certificate Of Analysis
(For eg. B 1615-0108)
Other Documents
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10127-02-3
Acridine Orange hemi(zinc chloride) salt, dye content, 90 %
5141-20-8
Light green SF yellowish
1945-77-3
Methyl thymol blue, GR
64071-86-9
Fast black k salt
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