calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate];CI 15525;PIGMENT RED 68;Benzoic acid, 2-chloro-5-(2-hydroxy-1-naphthalenyl)azo-4-sulfo-, calcium sodium salt (2:1:2);C.I. PIGMENT RED 68);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)
calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate] Usage And Synthesis
Chemical Properties
Bright yellow light red. Excellent resistance to solvents such as ethanol, xylene and nitrocellulose. Thermal stability is 140°C. Acid and alkali resistance is poor, and there is migration phenomenon.
Uses
Calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate] is mainly used for printing ink, can also be used for the coloring of plastics.
Synthesis
Calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate] is prepared by diazotization of 2-chloro-5-amino-4-sulfobenzoic acid, coupling with β-naphthol, and precipitation of calcium salts.
calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate] Preparation Products And Raw materials
![calcium disodium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulphonatobenzoate] Structure](CAS/GIF/5850-80-6.gif)
