Color Swatch created using full strength/50/50 and was applied on cold press Bristol board (2 ply) material.
This color contains the following pigments:
PR101—Mars Orange
Pigment Type
n/a
Chemical Name
iron oxides
Chemical Formula
Fe2O2 or Fe2O3 • H2O
Properties
Mars Orange is a bright, extremely light red and appears almost pinkish when contrasted with darker colors. It has incredible tinting strength and opacity. The synthetic form of Mars Orange is made from iron oxides and is cleaner, brighter, and denser than its ochre-based counterparts.
Permanence
Mars Orange has good permanence and lightfastness.
Toxicity
Mars Orange has no significant hazards.
History
The word Mars refers to the Roman god of iron and war. Mars Orange has been manufactured as a pigment since the 17th century.
Alternate Names
n/a
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
PR5—Naphthol Red
Pigment Type
monoazo
Chemical Name
n/a
Chemical Formula
C30H31ClN4O7S
Properties
This Naphthol Red is a bright deep red with bluish undertones. It has an average drying time.
Permanence
This Naphthol Red has fair to good lightfastness, not because of its masstone, but because it fades in tints. Not suitable for exterior use.
Toxicity
Naphthol Reds are not considered toxic. They may cause eye, skin, or respiratory irritation. Contact with dry pigment should be avoided.
History
Unknown.
Alternate Names
Naphthal, Naphthol Bordeaux, Naphthol Carbamide, Naphthol Carmine, Permanent Carmine, Permanent Red.