CAS 101-50-8

4-Aminoazobenzene-3,4′-disulfonic acid

Description:

4-Aminoazobenzene-3,4′-disulfonic acid, also known as Sudan I or by its CAS number 101-50-8, is an organic compound characterized by its azo group (-N=N-) linking two aromatic rings, specifically an amino-substituted benzene. This compound is a water-soluble dye, notable for its bright orange-red color, which is attributed to the conjugated system of double bonds in its structure. It possesses two sulfonic acid groups (-SO3H) that enhance its solubility in water and contribute to its application in dyeing textiles and as a pH indicator. The amino group (-NH2) allows for further chemical modifications, making it versatile in various chemical reactions. However, it is important to note that 4-Aminoazobenzene-3,4′-disulfonic acid has raised health concerns due to its potential carcinogenic properties, leading to regulatory scrutiny in many countries. As such, its use is often restricted or monitored in consumer products.

Formula: C₁₂H₁₁N₃O₆S₂

InChI: InChI=1S/C12H11N3O6S2/c13-11-6-3-9(7-12(11)23(19,20)21)15-14-8-1-4-10(5-2-8)22(16,17)18/h1-7H,13H2,(H,16,17,18)(H,19,20,21)

InChI key: InChIKey=DCYBHNIOTZBCFS-UHFFFAOYSA-N

SMILES: N(=NC1=CC=C(S(=O)(=O)O)C=C1)C2=CC(S(=O)(=O)O)=C(N)C=C2

Synonyms:

• 2-Amino-5-((4-Sulfophenyl)Azo)-Benzenesulfonicaci
• 2-Amino-5-(4-Sulfophenyl)Azo-Benzenesulfonic Acid
• 2-Amino-5-(4-sulfophenylazo)benzenesulfonic acid
• 2-Amino-5-[2-(4-sulfophenyl)diazenyl]benzenesulfonic acid
• 2-Sulfo-4-[(4-sulfophenyl)azo]aniline
• 2-amino-5-[(E)-(4-sulfophenyl)diazenyl]benzenesulfonic acid
• 4-(4-Amino-3-Sulfophenylazo)-Benzenesulfonicaci
• 4-Amino-1,1′-azobenzene-3,4′-disulfonic acid
• 4-Amino-3,4'-Disulfoazobenzene
• 4-Amino-3,4′-disulfo-1,1′-azobenzene
• 4-Amino-Azobenzene-4'-Disulfonicacid
• 4-Aminoazobenzene-3,4'-Disulfonic
• Benzenesulfonic acid, 2-amino-5-[(4-sulfophenyl)azo]-
• Benzenesulfonic acid, 2-amino-5-[2-(4-sulfophenyl)diazenyl]-
• Benzenesulfonic acid, 6-amino-3,4′-azodi-
• NSC 57606
• P-Aminoazobenzene-3,4'-disulfonic acid
• Para amino azobenzene-3,4-disulfonic acid