Ponceau S (C.I.27195) [6226-79-5] falls within a group of substances characterized by consistent performance as acid-red food dyes. Its molecular formula is C22H12N4Na4O13S4, with a molecular weight of 760.6. This compound is structurally related to other azo dyes, exhibiting a characteristic double bond between nitrogen atoms and two sulfur atoms. It requires careful handling due to potential irritation to skin and eyes. Ponceau S finds applications in various industries, particularly in food and textile production, where it imparts a distinctive red color.

• CAS Number: 6226-79-5
• Molecular Formula: C22H12N4Na4O13S4
• Molecular Weight: 760.6
• Exact Mass: 759.8874483