Winsor & Newton Professional Acrylics - Naphthol Red Medium, 200 ml tube

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Item #:01630-3744
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Winsor & Newton Professional Acrylic Paint - Naphthol Red Medium, 200 ml tube and swatch

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Product Details

Description:
Professional Acrylics
Color:
Naphthol Red Medium
Size:
200 ml (6.75 oz)
Format:
Tube
No.
423
Series:
2
Mfg #:
2337423

Colors on Monitors -

Due to differences in users’ monitors, the colors presented are an approximation of the true color.
Shipping Note - Due to manufacturer distribution restrictions, Winsor & Newton products cannot be shipped to addresses outside of North America.

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Pigment Information

This color contains the following pigments:

PR170-Naphthol Red


Pigment Name

PR170-Naphthol Red

Pigment Type

organic, naphthol AS

Chemical Formula

C26H22N4O4

Properties

Pigment PR170 is a bright deep red with bluish undertones. It has an average drying time. It has two crystaline forms that differ significantly in opacity. The more transparent form (F5RK) tends to be more bluish and is less lightfast.

Permanence

The lightfastness and weatherfastness of Pigment PR170 varies, depending on the application and the crystaline form. The opaque form (F3RK) has very good lightfastness, and is more weather resistant. The transparent form (F5RK) has lightfastness that is considered acceptable in pure applications, but it fades more in tints. Neither form is considered suitable 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 Red PR170 is a Naphthol AS pigment, chemically related to the diarylide yellow pigments. The Naphthol AS pigments comprise a range of reds. They are used in plastics, textiles, and printing inks.


Safety Data Sheet

UPC Code: 094376991215

ASIN #: B005LA051S