Pigment orange 43
Synonyms: C. I. 71105
C. I. Pigment Orange 43
Vat Orange 7
Bisbenzimidazo[2, 1-b: 2', 1'-I]benzo[lmn][3, 8]phenanthroline
-8, 17-dione

Pigment Orange 43
Color Index NO.: C. I. P. O 43
CAS No.: 42612-21-5 /4424-06-0
Molecular Weight: 412
Molecular Formula: C26H12N4O2
Density 1.66
Chemical Family: Aminoketone

Property and application:
Mauve powder; Soluble in o-chlorophenol, slightly soluble in chloroform and pyridine, and insoluble in acetone, ethanol, ; Dark reddish yellow in the concentrated sulfuric acid; Olive in the alkaline rongalite solution, with red fluorescence; Reddish brown in the acid rongalite solution; The property resistant to fat, ethanol and kerosene xylene, etc. Solutions reaches 4 to 5; The color fastness resistant to water and linolic acid reaches 5 grade; Suitable for the pigmentation of paint, printing ink and alkene.