Is Reactive Blue 4 vegan?

Blue MX-R (Reactive Blue 4) is a synthetic reactive anthraquinone dye used in textile dyeing and as a dye ligand in affinity chromatography for protein purification. It is classified under the Colour Index as CI 61205.

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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.