M. Graham Artists' Oil Color - Nickel Quinacridone Gold, 37 ml tube

Pigment Information

This color contains the following pigments:

PO48-Quinacridone Gold

PY150-Nickel Azo Yellow

Pigment Name

PO48-Quinacridone Gold

Pigment Type

organic, quinacridone

Chemical Formula

C20H12N2O2 or C20H10N2O4

Properties

Quinacridone Gold is a high performance pigment. It lacks brightness and cleanliness in tints, and it may disperse unevenly. It has an average drying time. 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 Gold has excellent lightfastness and is considered the most lightfast pigment in its shade range.

Toxicity

Quinacridone gold is not considered toxic. 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

PY150-Nickel Azo Yellow

Pigment Type

inorganic

Chemical Name

nickel azomethine yellow

Chemical Formula

C30H18Cl2N6NiO4

Properties

Nickel Azo Yellow is a transparent, moderately staining yellow pigment with high tinting strength. It is considered a good color match in botanical and landscape painting for natural gamboge (NY24), a historic yellow pigment with fair to poor lightfastness.

Permanence

Nickel azomethine yellow has excellent lightfastness.

Toxicity

Nickel azo yellow pigment is mildly toxic, and is often labeled as hazardous. Avoid respiratory and skin exposure to pigment dust. It should be disposed of properly with other hazardous wastes, not washed down the sink.

History

Nickel azomethine yellow has been developed as an artist pigment becasue it is a close match for gamboge, a historic yellow.