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BlockxPaints

Blockx Artists' Watercolor - Cadmium Purple, 15 ml tube

Watercolor

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  • Blick Art Materials
    $23.07 USDShop
    Recorded Oct 22, 2026, 3:32 AM UTC

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Product details
Size
15 ml
Blick SKU
01706-6030
About this product range

These artist grade watercolors continue the Blockx family legacy that began in 1865. They are made using the same processes developed many years ago.

Only the finest ingredients go into the manufacture of Blockx watercolors. Rare, tough pigments are ground slowly and repeatedly on stone mills to achieve the optimum particle size, and to eliminate overheating and iron pollution. The pigments are then blended with pure, light gum Arabic, honey made from selected flowers, and chemically pure glycerin and water.

The result is a variety of stable, transparent colors with wonderful working properties.

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.

Cadmium Red

Pigment code
PR108
Type
inorganic, cadmium
Chemical name
cadmium sulfide and cadmium selenide
Chemical formula
CdS x CdSe
Properties
Cadmium Red is a bright, warm red that ranges in shade from orange-red to maroon and is available in light, medium, and dark versions. It is strong and opaque, with good tinting strength. Cadmium Red dries slowly. It grays down when mixed with white, mixes well with blues to create a range of browns, and mixes well with Cadmium Yellow to create a strong orange. It also works well in neutral mixes. Cadmium pigments have been partially replaced by azo pigments, which are similar in lightfastness to the cadmium colors, cheaper, and non-toxic. Hues vary by brand. Cadmium Red is usually available in either a pure grade or a cadmium-barium mix. The cadmium-barium mix has the same permanence as pure Cadmium Red, but it has a lower tinting strength.
Permanence
Cadmium Red is lightfast and permanent in most forms, but like many cadmium pigments, it will fade in fresco or mural painting. Its improved lightfastness has helped it to replace Vermilion on the artist’s palette.
Toxicity
Cadmium Red is a known human carcinogen. It is extremely toxic if inhaled and slightly toxic if ingested.
History
Cadmiums get their names from the Latin word cadmia meaning zinc ore calamine, and the Greek word kadmeia, meaning Cadmean earth, first found near Thebes, the city founded by the Phoenician prince Cadmus. Metallic cadmium was discovered in 1817 by Friedrich Strohmeyer, but Cadmium Red was not introduced until 1907 in Germany.
Description
Cadmium Scarlet, Selenium Red.

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