C 5711
Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y
573-58-0
certified by the Biological Stain Commission
C32H22N6Na2O6S2
32041421
85%
696.66
Bottle
18%
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.
Hematology & histology
Solid
Dye content, ≥85%
>360 °C(lit.)
WGK Germany 3 RTECS QK1400000
62758-13-8
846-70-8
24886-73-5
32638-88-3