Is Basic Green 4 vegan?
Basic Green 4
Malachite Green is a synthetic triarylmethane organic dye used traditionally for dyeing silk, leather, and paper, and controversially as an antimicrobial agent in aquaculture. Despite its name, it is not derived from the mineral malachite but is named for the similarity in colour. It is identified as Basic Green 4.
| Also known as | [4-[.alpha.[4-(dimethylamino)phenyl]benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium chloride (CI 42000), 18015-76-4, Basic Green 4, Diamond Green B, Malachite Green, Malachite green hydrochloride, Malachite green oxalate, Victoria Green B |
|---|---|
| INCI name | Basic Green 4 |
| CAS number | 569-64-2 |
| EC number | 209-322-8 |
| CI number | CI 42000 |
| CosIng ID | 54817 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
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