CheckVegan

Is Acid Green 3 vegetarian?

Acid Green 3

Vegetarian Vegetarian
Vegan Vegan

Guinea Green B is a synthetic triarylmethane acid dye used to colour textiles and foods (formerly as Food Green 1). It is entirely synthetic in origin.

Also known as Acid Green 3, Food Green 1, Guinea Green
CAS number 4680-78-8
CI number CI 42085
Last reviewed 3 June 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