... solvent ink, water-based ink, plastic, coating, rubber, leather and coating printing. 1. Product NameTrade Name: Fast Blue Lake BOC ... 7EU Number: 215-410-7Chamical Family: Triphenylmethane 2. Physical, Chemical and Fastness PropertiesMolecular Weight: 7570-8538Molecular Formula: ------P.H. Value: ... 4Alkali Resistance: 3 3. ApplicationShade: Bluish VioletMain Application: Offset Ink and Water base Ink