Compound Q&A
What are the physical and chemical properties of Sudan Black (CAS: 4197-25-5)?
Answer
Sudan Black (CAS: 4197-25-5) is a deep brown to black dye commonly used in microscopy and histology. It is insoluble in water but soluble in organic solvents. Chemically, it is a polycyclic aromatic hydrocarbon and exhibits strong basic properties. Its molecular weight is around 172.23 g/mol. Sudan Black is not highly reactive but tends to adsorb onto surfaces, which affects its stability and solubility in different media.
About
CAS No
4197-25-5
English Name
Sudan Black
Molecular Formula
C29H24N6
Molecular Weight
456.55 g/mol
SMILES
CC(N1)(C)NC2=CC=CC3=C(/N=N/C4=C5C=CC=CC5=C(/N=N/C6=CC=CC=C6)C=C4)C=CC1=C23
InChIKey
YCUVUDODLRLVIC-VPHDGDOJSA-N
Last Updated: 2025-09-05 20:45
