Color Swatch created using heavy application/medium application/50% tint and was applied on acrylic primed canvas (7 oz) material.
This color contains the following pigments:
PR4—Permanent Red
Pigment Type
organic, monoazo
Chemical Name
n/a
Chemical Formula
n/a
Properties
Pigment PR4 is an opaque, bright yellowish red pigment with high tinting strength.
Permanence
Pigment PR4 has good lightfastness, but newer red pigments are considered more permanent and reliable.
Toxicity
Known also as D&C Red No 36, PR4 is used in cosmetic products such as lipsticks. It has been tested for carcinogenic and mutagenic effects in laboratory rats.
History
Because it is inexpensive and has a long history of use in cosmetic products, Permanent Red PR4 is widely used in artist materials where safety is more important than archival preservation, as in children's art materials.
Alternate Names
Blazing Red, Flaming Red, D&C Red No 36.
PR3—Toluidine Red
Pigment Type
organic, monoazo
Chemical Name
n/a
Chemical Formula
n/a
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.
Alternate Names
Eljon Red, Eljon Scarlet, Hansa Red, Hansa Scarlet, Kenalake Scarlet, Solintor Scarlet, Sunbrite Red