Da Vinci Artists' Permanent Watercolor - Thioindigo Violet, 15 ml tube

Pigment Information

This color contains the following pigments:

PV19-Quinacridone Violet

PR88-Thioindigoid Red

Pigment Name

PV19-Quinacridone Violet

Pigment Type

organic synthetic, quinacridone

Chemical Formula

C20H12N2O2

Properties

Quinacridone Red is a high performance, transparent pigment with an average drying time and uneven dispersal. It is another name for Quinacridone Violet (PV19) and Quinacridone Red (PR192). 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 Violet has excellent lightfastness and is considered the most lightfast organic pigment in this shade range.

Toxicity

Quinacridone Violet has no known acute hazards. 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

PR88-Thioindigoid Red

Pigment Type

indigoid, vat

Chemical Formula

C16H4Cl4O2S2

Properties

Thioindigoid Red is a relatively clean red considered to be a vat pigment. It has an average drying time.

Permanence

Thioindigoid Red has excellent lightfastness.

Toxicity

Thioindigoid Red is not considered toxic.

History

Unknown.