Is Crystal violet (CI 42555) vegan?

Basic Violet 3 is also known as Crystal violet (CI 42555).

Crystal Violet is a triarylmethane dye used as a histological stain and in Gram's method for classifying bacteria. It exhibits antibacterial, antifungal, and anthelmintic properties and was formerly used as a topical antiseptic. It remains listed by the World Health Organization and is a fully synthetic compound.

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