Quinacridone

Quinacridone (CAS 1047-16-1, EC 213-879-2, C.I. 73900 / C.I. 73915) is a synthetic organic pigment commercially known under trade names including Monastral Red B, Monastral Red Y, and Cinquasia Red B. It belongs to the linear trans-quinacridone class and carries no assigned E-code, as it is not approved for food use.

In coatings and automotive finishes, quinacridone delivers high chroma red-to-violet hues through intermolecular hydrogen bonding that produces exceptional lightfastness and heat stability. In plastics compounding, it functions as a colorant that resists migration and maintains color integrity under processing temperatures exceeding 300°C. It also serves as a photoinitiator component in certain UV-curable ink systems.

Quinacridone is supplied as a solid nanomaterial and is subject to REACH registration obligations, including nanomaterial notification requirements under EU regulations. Procurement teams should verify supplier SDS documentation for particle size characterization and confirm compliance with applicable workplace exposure and classification standards. HS code 29339900 applies for import classification.