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Blick Artists' Watercolor - Brown Madder, 14 ml tube

Item #:01728-8210
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Brown Madder
Brown Madder

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AP Non-Toxic.

Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems.

Product Details

Color:
Brown Madder
Size:
14 ml

Pigment Information

This color contains the following pigments:

PR188 -Naphthol Red

PR179-Perylene Maroon

PV19-Quinacridone Violet


Pigment Name

PR188 -Naphthol Red

Pigment Type

organic monoazo

Chemical Formula

C33H24Cl2N2O6

Properties

This Naphthol Red is yellowish, with a high tinting strength and average drying time. It produces warmer shades and tints.

Permanence

This Naphthol Red has excellent lightfastness, though it is generally not considered adequate for exterior use.

Toxicity

Naphthol Reds are not considered toxic. They may cause eye, skin, or respiratory irritation. Contact with dry pigment should be avoided.

History

Naphthol pigments are actually dyes that are "laked" to form pigments. First developed by the German chemical company Hoechst A.G. before World War I, their use in artist paints began in the 1920s.


Pigment Name

PR179-Perylene Maroon

Pigment Type

organic, anthraquinone

Chemical Formula

C26H14N2O4

Properties

Perylene Maroon is a transparent, dull to moderately dull, deep red pigment. Its transparency makes it useful as a glazing color.  Its mixing complement is Phthalo Green, and together they produce a pure black that is darker than most carbon-based pigments.

Permanence

Perylene Maroon has excellent permanence and lightfastness, and it can be an appropriate replacement for Anthraquinone Red in watercolor form.

Toxicity

Perylene Maroon has no significant acute toxicity. Its long term hazards are currently unknown.

History

Perylenes have been used as vat dyes since 1912, but they were not manufactured and sold as pigments until 1957.


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.


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