Sennelier Dry Pigment - Permanent Red Deep, 150 g jar

Pigment Information

This color contains the following pigments:

PR3-Toluidine Red

PR48:2-Ruby Red

Pigment Name

PR3-Toluidine Red

Pigment Type

organic, monoazo

Chemical Formula

Properties

Toluidine Red is a semi-opaque, yellowish red pigment with high tinting strength. .

Permanence

Toluidine Red has very good lightfastness.

Toxicity

Toluidine Red is not regarded as toxic.

History

Toluidine Red or Toluidine Scarlet has been used in inks, textiles, artist materials, and plastics.

Pigment Name

PR48:2-Ruby Red

Pigment Type

organic, monoazo

Chemical Name

beta-oxynaphthoic acid lake, calcium salt

Chemical Formula

Properties

Ruby Red is a common name used for the calcium salt of beta-oxynaphthoic acid (BONA) lake pigment PR:48. It is substantially bluer than other shades of PR:48. BONA pigment lakes have high tinting strength.

Permanence

Beta-oxynaphthoic acid (BONA) lake pigments are more lightfast than their beta-naphthol counterparts. Although their lightfastness makes them the pigment of choice in many applications, they may shift slightly in color or lose intensity under some conditions.

Toxicity

History

Ruby Red is a lake pigment of beta-oxynaphtholic acid, a dye that resembles the common beta-Naphthol pigments. Beta-oxynaphthoic acid may have been synthesized as early as 1887. Commerical use of BONA lake pigments began in the 20th century. Ruby Red is used in printing and plastics.