CAS Registry Number

CAS 6226-79-5 — Ponceau S (C.I.27195)

CAS 6226-79-5 C22H12N4Na4O13S4 MW 760.57

Ponceau S (C.I.27195) is a bright red azo dye widely used as a pH indicator in biochemical assays, food coloring (E124), and histological staining. It changes color in acidic and alkaline conditions, making it valuable for protein detection in gels and analytical applications. CAS 6226-79-5, molecular formula C22H12N4Na4O13S4, molar mass 760.57 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Ponceau S from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Ponceau Solution 0.1 % (w/v) in 5% (w/v) acetic acid

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Molekula products for CAS 6226-79-5

Ponceau S (C.I.27195)

SKU 43797916

In stock Stains & Indicators

Ponceau Solution 0.1 % (w/v) in 5% (w/v) acetic acid

SKU 90029153

Made to order Analytical Reagents

Molekula has supplied fine chemicals and biochemicals since 2000 from ISO 9001:2015 and ISO 14001:2015 certified facilities. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.