These water-resistant crayons are soft and easy to work with. They feature exceptional covering power, excellent lightfastness, and are great for underpainting. Their hardness allows them to be sharpened more easily for detail and edge work.
Color Swatch created using heavy to light application and was applied on 100 lb (163 gsm) drawing paper material.
Benzimidazolone Orange is a staining, yellowish orange pigment that can become dull in tints. It has an average drying time, and it loses some of its intensity as it dries. The yellowish orange varieties are more transparent.
Benzimidazolone Orange has excellent lightfastness and outstanding heat and solvent stability for a monoazo pigment.
Benzimidazolone Orange is not considered toxic.
The benzimidazolone group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis. Use of benzimidazolone pigments in the auto industry, especially Benzimidazolone Orange, became common in the 1980s because they were common replacements for lead chromate pigments, which were phased out during this period.
Permanent Orange, Benzimida Orange
Indanthren Brilliant Orange is insoluble in water.
The lightfastness of anthraquinone vat dyes is consdered to be good, and may be improved upon by the use of protective coatings to avoid exposure of the dye to oxygen.
No information is available.
Indanthren Brilliant Orange has been used as a vat dye for textiles.
Helio Brilliant Orange, Indanthrene Brilliant Orange, Vat Orange
® Caran d'Ache is a registered trademark.