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Is Methyl Blue vegan?

Methyl Blue is a synthetic triarylmethane dye with the molecular formula C₃₇H₂₇N₃Na₂O₉S₃, used as a histological stain to colour collagen blue in tissue sections. It is employed in differential staining techniques such as Mallory's trichrome and Gömöri trichrome stains, and can mediate electron transfer in microbial fuel cells.

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.