CheckVegan

Is Acid Black 41 vegetarian?

Acid Black 41

Vegetarian Vegetarian
Vegan Vegan

Naphthalene Blue Black CS is a synthetic azo dye used in the textile industry for dyeing wool and other fibres, known also as Blauschwartz NSF and Acid Black 41.

Also known as Acid Black 41, Blauschwartz NSF, Naphthalene Blue Black CS
CAS number 5850-37-3
CI number CI 20480
Last reviewed 3 June 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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