PWC Extra Fine Professional Watercolor - Payne's Grey, 15 ml, Tube

Item #:86302-2562
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PWC Extra Fine Professional Watercolor - Payne's Grey, 15 ml, Swatch with Tube
PWC Extra Fine Professional Watercolor - Payne's Grey, 15 ml, Swatch with Tube
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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:
Payne's Grey
Description:
Extra Fine Professional Watercolor
Size:
15 ml (.5 oz)
Format:
Tube
No.
688

Pigment Information

This color contains the following pigments:

PB66-Indigo

PBk31-Paliogen Black


Pigment Name

PB66-Indigo

Pigment Type

synthetic, organic

Chemical Name

2,2’-Bis(2,3-dihydro-3- oxoindolyliden)

Chemical Formula

C16H10N2O2

Properties

Indigo is a deep blue pigment, almost violet dye that can be laked as a pigment.

Permanence

Indigo is fugitive. Indigoid Blue is the famous blue dye used in many blue jeans and other denim products, famous for the way it fades! Although a few paint manufacturers offer a genuine indigo color based on PB66, it should be used only for applications that are not permanent, or where the color is required for historic reasons. Most paint manufacturers replicate this historic hue with other more permanent pigments.

Toxicity

Although natural indigo is known to be mildly toxic, its toxicity is believed to be the result of other natural alkoids found in plant sources, not of the indigo dye itself. The acute and chronic toxicity of synthetic indigo dyes has been studied and has

History

Indigoid Blue is a synthetic version of Indigo, a famous dye and laked pigment that has been used since ancient times. The chemical compound that constitutes the indigo dye is called indigotin. More than 30 species of plants, found in many parts of the world, can be used to produce indigo dye. Indigo dye became the rage in Europe during the late Middle Ages. Although genuine indigo from plant sources is available, only the synthetic version is now used in commercial dye and pigment products. Genuine Indigo is designated NB1 (Natural Blue 1). The synthetic dye molecule was first synthesized by Bäyer in 1878, and it later became available as a commercial dye, quickly replacing natural sources.


Pigment Name

PBk31-Paliogen Black

Pigment Type

organic, anthraquinone

Chemical Name

Perylene

Chemical Formula

Properties

Paliogen Black is a semitransparent pigment that paints out black in pure form, but tints to a dark green, ideal for painting shadows.

Permanence

Paliogen Black is very lightfast.

Toxicity

History

Paliogen Black was developed for typewriter and printer  ribbons. Although black, it is transparent in the infrared spectrum.


Safety Data Sheet

UPC Code: 8803332572199