Schmincke Norma Professional Oil Paint - Madder Red, 35 ml, Tube

Pigment Information

This color contains the following pigments:

PR207-Quinacridone Scarlet

PR264-Pyrrole Rubine

Pigment Name

PR207-Quinacridone Scarlet

Pigment Type

organic, quinacridone

Chemical Formula

C20H12N2O2 or C20H10N2O2

Properties

Quinacridone Scarlet is a yellowish red pigment with an average drying time and some uneven dispersion. Quinacridone pigments have relatively low tinting strength in general. For this reason, quinacridone colors are often expensive, because more pigment is required in the formulation.

Permanence

Quinacridone Scarlet has excellent permanence and lightfastness. It is considered one of the most lightfast organic synthetic pigments in this shade range.

Toxicity

Quinacridone Scarlet has no known acute hazards. Overexposure to quinacridone pigments may cause skin irritation. Quinicridone pigments contain a compound found to be a skin, eye, and respiratory irritant.

History

Although quinacridone compounds became known in the late 19th century, methods of manufacturing so as to make them practical for use as commercial pigments did not begin until the 1950s. Quinacridone pigments were first developed as coatings for the automotive industry, but were quickly adopted by artists.

Pigment Name

PR264-Pyrrole Rubine

Pigment Type

organic, aminoanthroquinone

Chemical Name

1,4-diketo-3,6-di(4'-tertiary butyl phenyl)-2,5-dihydro pyrrolo[3,4-c]pyrrole

Properties

This bluish red transparent pigment has high tinting strength. Diketo pyrrolo pyrrole pigments are noteworthy for their light stability, excellent weatherability, and outstanding heat stability.

Permanence

Pyrrole Rubine has excellent permanence and lightfastness for an organic pigment in its color range.

Toxicity

Pyrrole pigments are considered to be non-toxic.

History

The Pyrrole group of synthetic organic pigments was developed in the 1980s. Pyrrole Rubine was first manufactured by Ciba Specialty Chemicals under the trade name Irgazine Ruby. Although not a perfect match for alizarin crimson, Pyrrole Rubine is one of several new pigments that has helped to close a traditional gap in the gamut of artist pigments, the lack of lightfast and transparent colors in the red/blue and red/violet parts of the spectrum.