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Blick Artists' Soft Pastel - Rose Madder 3

Artists' Soft Pastel

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  • Blick Art Materials
    $3.56 USDShop
    Recorded Oct 22, 2026, 12:58 AM UTC

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Product details
Blick SKU
21948-3503
About this product range

Blick Artists' Soft Pastels are available in a variety of rich, vibrant colors and soft hues, ideal for all types of pastel painting and color sketching.

Created by combining the finest pigments with a minimal amount of binder, Artists' Soft Pastels have a velvety texture that offers easy laydown and consistent coverage. They're great for blending, layering and softening edges — all with minimal crumbling. They're also extremely lightfast.

Available by the individual stick, sets of full length sticks, or half stick sets that allow artists access to twice the color and twice the creative possibilities of the full stick sets. Individual sticks measure 2-1/2" L x 1/2" Dia (64 mm x 13 mm). Half sticks measure 1-1/4" L x 1/2" Dia (32 mm x 13 mm).

For professional quality at an affordable price, artists choose Blick Artists' Soft Pastels.

Please refer to the Item Specs tab of this page for lightfast ratings.

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
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).

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