Grumbacher Finest Artists' Watercolor - True Red, 14 ml tube

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Blick Art Materials
$19.97 USDShop
Recorded Oct 22, 2026, 3:04 AM UTC

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Product details

Size: 14 ml
Blick SKU: 01724-3710

About this product range

Grumbacher Finest Artists' Watercolors are professional grade colors formulated with premium grades of pigments sourced throughout the world. Each of the rich, fully pigmented colors in the line is uniformly combined in a balanced medium designed to ensure fluid, even washes.

Pigment information

General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.

Naphthol Red

Pigment code: PR188
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.
Description: Naphthal, Naphthol Bordeaux, Naphthol Carbamide, Naphthol Carmine, Permanent Carmine, Permanent Red.

Naphthol Red

Pigment code: PR170
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.
Description: Naphthal, Naphthol Bordeaux, Naphthol Carbamide, Naphthol Carmine, Permanent Carmine, Naphthol Crimson, Permanent Red, Permanent Red F3RK (more opaque), Permanent Red F5RK (more transparent).