Acid Orange 3 is a nitro-class acid dye valued for its bright, clean, yellowish-orange shade. While offering excellent leveling properties, it is typically used in applications where high wet fastness is not a primary requirement. Its main advantages are its shade brilliance and ease of application, making it a cost-effective choice for colouring protein fibres like wool and silk, as well as for certain industrial colouring purposes where a vibrant orange is desired.
