Index Number: Pigment Yellow 151
C.I. Structure Number: 13980
Chemical category: Benzimidazolones
Molecular formula: C₁₈ H₁₅N₅O₅
Relative molecular mass: 381.34
Ranbar yellow P3418/P3420/P3421 benzimidazolone yellow organic pigment, Pigment Yellow 151, gives a greener hue than CI Pigment Yellow 154 and a reddish hue than Pigment Yellow 175, with a hue angle of 97.4 degrees (1/3 SD) , Has good hiding power; excellent light fastness, color samples in alkyd melamine resin, exposed for 1 year, weather fastness has 5 gray card, dilute color (1; 3 TiO₂) is still 4 ；Heat resistance in HDPE of 1/3 standard depth is 260℃/5min;
It is suitable for high-end industrial coatings, automotive primers (OEM), and can be used in combination with phthalocyanines and inorganic pigments, and can also be used for coloring polyester laminated plastic film printing inks.
