R&F Pigment Stick - Magenta Earth, 38 ml

Magenta Earth has a reddish-brown, almost mahogany top tone. Extended out, it reveals a purplish plum colour. When rubbed, it becomes a delicate pinkish brown. Mix of Quinacridone Magento and Stil de Grain.

• Pigment Composition: PV19-Quinacridone Violet; PR101-Red Iron Oxide
• Dimension: 38 ml. stick measuring 5" x 3/4" diameter
• Paint Lines: Encaustic Pigment Stick
• Opacity: Semi-Transparent
• Pigment Stick Drying Rate: Fast
• Classification: Mixed
• Chemical Composition: Quinacridone Magenta + Still de Grain
• Safety Information: Conforms to ASTM D-4236

Pigment Name: PV19 Quinacridone Violet

Classification: Synthetic Organic, Quinacridone

Chemical Composition: Quinacridone Magenta

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 generally have relatively low tinting strength. For this reason, quinacridone colours 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. Quinacridone pigments contain a compound found to be a skin, eye, and respiratory irritant.

History

Although quinacridone compounds became known in the late 19th century, manufacturing methods to make them practical for use as commercial pigments began in the 1950s. Quinacridone pigments were first developed as coatings for the automotive industry but were quickly adopted by artists.

Pigment Name: PR101 Red Iron Oxide

Classification: Synthetic Organic, Earth

Chemical Composition: Iron oxides (synthetic), iron oxide, silica, alumina, lime, and magnesia or hydrated iron oxide

Properties

Red iron oxide varies in hue and transparency, depending on hydration and slight impurities. Indian Red is a slightly duller, deep brick hue with a bluish undertone. It is very dense and opaque, with excellent tinting strength and covering power. It is dependable when mixed with all other permanent pigments and yields good flesh tints when mixed with Zinc White. It is the synthetic version of PR102, a pigment made from earth reds or natural red iron oxides, and the names applied to PR101 and PR102 often overlap. Synthetic red iron oxides have mostly replaced natural red iron oxides and are brighter, more robust, refined, and permanent. Indian Red is the highest grade bluish shade. Light Red, English Red, and Venetian Red are yellowish shades. Mars Violet is a dull and subdued bluish or purplish oxide.

Permanence

Red iron oxide is very lightfast and has excellent permanence.

Toxicity

Red iron oxide has no significant hazards.

History

Natural red iron oxide comes from the mineral ore hematite, which the ancient Greeks called bloodstone from the word hema, meaning blood. Hematite is one of the oldest pigments, has been used by every major civilization, and was an essential mineral for medieval alchemists. It was not widely used in artists' materials until the 17th century and was not produced in large quantities until the 18th century.