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00495-3410 — Scarlet Lake Extra

Old Holland has been making artist colors since 1664, as one of the oldest continuously operating companies in the art supply industry. The company is known for uncompromising adherance to its techniques and standards. All color making is done by hand

Scarlet Lake Extra

This color contains the following pigments:

PR168—Indanthren Brilliant Orange
PR209—Quinacridone Red

PR168—Indanthren Brilliant Orange

Pigment Type

organic, anthraquinone

Chemical Name

n/a

Chemical Formula

n/a

Properties

Indanthren Brilliant Orange is insoluble in water.

Permanence

The lightfastness of anthraquinone vat dyes is consdered to be good, and may be improved upon by the use of protective coatings to avoid exposure of the dye to oxygen.

Toxicity

No information is available.

History

Indanthren Brilliant Orange has been used as a vat dye for textiles.

Alternate Names

Helio Brilliant Orange, Indanthrene Brilliant Orange, Vat Orange

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PR209—Quinacridone Red

Pigment Type

organic, quinacridone

Chemical Name

n/a

Chemical Formula

n/a

Properties

Quinacridone Red is a bright, clean red pigment with 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 Red has excellent permanence and lightfastness.

Toxicity

Quinacridone Red 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.