颜料红 68; C. I. 颜料红 68; 颜料红 68 [CI 15525]; CI 15525; PIGMENT RED 68; Benzoic acid, 2-chloro-5-(2-hydroxy-1-naphthalenyl)azo-4-sulfo-, calcium sodium salt (2:1:2); Pigment red 68 calcium-sodium salt (C.I. 15525); Bis[2-chloro-5-[(2-hydroxy-1-naphthalenyl)azo]-4-(sodiosulfo)benzoic acid]calcium salt; 2-Chloro-5-((2-hydroxy-1-naphthalenyl)azo)-4-sulfobenzoic acid, calcium sodium salt (2:1:2)