The item under consideration is Sudan III (C.I. 26100), a dye primarily used for lipid staining within the field of life science. It belongs to the substance groups of Naphthols, substituted, and Azo compounds and diazo compounds. The molecular formula of Sudan III is C22H16N4O with a Molecular Weight of 352.4 g/mol. The compound's structure can be represented by the SMILES notation C1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C=CC4=CC=CC=C43)O. This chemical carries a Warning signal word according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) due to its potential for skin irritation and suspected carcinogenicity.

• CAS Number: 85-86-9
• Molecular Formula: C22H16N4O
• Molecular Weight: 352.4
• Exact Mass: 352.13241115
• GHS Signal Word: Warning
• Hazard Statements:
• H315 (21.3%): Causes skin irritation [Warning Skin corrosion/irritation]
• H351: Suspected of causing cancer [Warning Carcinogenicity]