Ponceau 3R (C.I. 16155) is an azo dye that once was used as a red food colorant. References: Fuh MR, Chia KJ. Determination of sulphonated azo dyes in food by ion-pair liquid chromatography with photodiode array and electrospray mass spectrometry detection. Talanta. 2002 Mar 11;56(4):663-71. PubMed PMID: 18968541.

纯度：≥98%

CAS：3564-09-8