in C.I. Pigment Blue 15 (C.I. 74160) points out the method (2) use 4-Sulfophthalic acid?preparation phthalocyanine. The sun and alkali resistance is better than the fastness of the products directly Copper phthalocyanine, but for cellulose low affinity.
Properties and Applications
blue. Soluble in water to blue. The strong sulfuric acid for yellow-green, in strong hydrochloric acid for green, precipitation; In the nitric acid decomposition; In the green light for sodium hypochlorite red; In insurance powder solution for palm red.
