CheckVegan

Is C.I. Pigment Red 53 vegetarian?

C.I. Pigment Red 53

Vegetarian Vegetarian
Vegan Vegan

C.I. Pigment Red 53 is a synthetic azo pigment, the barium salt of a chlorinated hydroxynaphthalene azo dye, used as a colorant in inks, paints, and plastics.

Also known as Benzenesulfonic acid, 5-chloro-2-(2-(2-hydroxy-1-naphthalenyl)diazenyl)-4-methyl-, barium salt (2:1)
CAS number 15958-19-7
EC number 225-935-3
Last reviewed 10 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue