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:
PY42—Mars Orange
Pigment Type
inorganic, earth
Chemical Name
iron oxide
Chemical Formula
Fe2O2 or Fe2O3 • H2O
Properties
Mars Orange is a bright, extremely light red and appears almost pinkish in contrast 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 excellent 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
PO61—Isoindoline Orange 61
Pigment Type
organic, azomethine
Chemical Name
isoindoline orange
Chemical Formula
n/a
Properties
Isoindoline Orange 61 is an opaque, yellowish orange pigment with moderate tinting strength.
Permanence
Isoindoline Orange 61 has very good lightfastness, although not as good as yellow pigments in the isoindoline group.
Toxicity
Isoindoline Orange 61 is not considered toxic.
History
The first isoindoline pigments were patented in 1946, and commercial production of pigments in this group began in the 1960s. Because of its high heat stability and relatively good lightfastness, PO61 is used in plastics, automotive finishes, and for printing inks. PO61 is often compared with PO13, which has higher tinting strength, but is not as lightfast.
Alternate Names
Permanent Orange.