PO62

Benzimidazolone Orange H5G, one of the more interesting modern oranges. This is a color that turns up in a handful of the attempts to replace Cadmium Orange, though the Benzimidazolone Orange we've tried has a yellow note in it. PO62 doesn't have the same high chroma as a cadmium orange PO20, nor does it have the same opacity. However, setting the cadmium discussion aside, in its own right this is an interesting pigment.

From a health and safety standpoint it may metabolize to a mutagen, and or cause a condition called methemoglobinemia. Author Monona Rossol has more on this, so please consult her work for additional information.

Benzimidazolone Orange seems to have good lightfastness overall with a slight fall off in tints- we wish it were even a little more lightfast as it's a nice, not-quite-highest-chroma orange. Even though Gamblin describes this color as the same masstone as Cadmium Orange, we'd actually have to disagree based on their version of it, which does not quite share the same high chroma as most of our samples of PO20. We'd say this color is slightly less chromatic than cadmium orange.