Is Victoria Blue 4R vegan?

Victoria Blue 4R

Vegan

Victoria Blue 4R is a synthetic triarylmethane dye with the Colour Index designation CI 42563, used in textile and biological staining applications. It is also known as Basic Blue 8.

Also known as Basic Blue 8
CAS number 2185-87-7
CI number CI 42563
Last reviewed 3 June 2026

Sources

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.