CheckVegan

Is Solvent Orange 1 vegan?

Solvent Orange 1

Vegan Vegan
Vegetarian Vegetarian

Solvent Orange 1 is a synthetic monoazo dye used as a colorant in cosmetics and other products, chemically identified as 4-(phenylazo)resorcinol.

Also known as 4-(Phenylazo)resorcinol
INCI name Solvent Orange 1
CAS number 2051-85-6
EC number 218-131-9
CI number CI 11920
CosIng ID 38152
Last reviewed 11 July 2026

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.

Report an issue