Daler-Rowney Aquafine Watercolors and Sets - Naples Yellow, 8 ml, Tube

Pigment Information

This color contains the following pigments:

PR176-Benzimidazolone Carmine

PBr24-Chrome Antimony Titanate

Pigment Name

PR176-Benzimidazolone Carmine

Pigment Type

organic, azo

Chemical Formula

C32H24N6O5

Properties

Benzimidazolone Carmine is a staining, dull red transparent pigment with high tinting strength. Its color is similar to, although somewhat darker than, Rose Madder, the natural source of the historic color Alizarin Crimson. Because it stains and tints much more strongly than natural Rose Madder, care is required to achieve the same effects.

Permanence

Although it is not absolutely lightfast, Benzimidazolone Carmine has excellent lightfastness for a transparent red organic pigment, and as a result, it is often chosen as a more permanent pigment to replace Alizarin Crimson.

Toxicity

Benzimidazolone Carmine is not considered toxic.

History

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. They differ very widely in hue.

Pigment Name

PBr24-Chrome Antimony Titanate

Pigment Type

inorganic

Chemical Name

chrome antimony titanate

Chemical Formula

Properties

Chrome Antimony Titanate is a staining, opaque yellowish brown pigment. It is often used to replace the original Naples Yellow or Chrome Yellow, both of which are highly toxic pigments.

Permanence

Chrome Antimony Titanate has excellent lightfastness and weatherfastness.

Toxicity

Chrome Antimony Titanate has negligible acute toxicity. In testing with rabbits, it was shown to be minimally irritating to the skin and eyes. Since it has the hexavalent structure of a chromium yellow, whether Chrome Antimony Titanate is a potential carc

History

Chrome Antimony Titanate is used in ceramics, plastics, and industrial coatings.