Da Vinci Artists' Permanent Watercolor - Naphthol Red (Mid-Tone), 37 ml tube
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$21.05
Blick Art Materials · recorded Oct 21, 2026, 6:24 AM UTC
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Product details
- Size
- 37 ml
- Blick SKU
- 00371-3603
About this product range
Da Vinci takes the name of their company very seriously. Their paints are exciting, intense, and rated among the best in the world for quality. The paints are permanent, with the highest tinting strength and pigment concentration available. However, they are especially soft, with a creamy consistency for smooth, easy dispersion with water. Available in both 15 ml (.51 oz) and 37 ml (1.25 oz) tubes. Da Vinci paints conform to artist's quality standard ASTM D-5067, and to safety standard ASTM D-4236.
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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