Winsor & Newton Professional Watercolor Sticks - Scarlet Lake (#603)

Item #:01774-9940
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Scarlet Lake
Scarlet Lake
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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

Scarlet Lake
Mfg #:

Pigment Information

This color contains the following pigments:

PR188 -Naphthol Red

Pigment Name

PR188 -Naphthol Red

Pigment Type

organic monoazo

Chemical Formula



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


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


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


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.

Safety Data Sheet

UPC Code: 884955033524

ASIN #: B00L5HP92G