Schmincke Horadam Aquarell Watercolor - Prussian Blue, Half Pan
Watercolor
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$7.89
Blick Art Materials · recorded Oct 21, 2026, 8:49 AM UTC
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Product details
- Blick SKU
- 86319-5220
About this product range
Schmincke Horadam Aquarell Half Pans are individually optimized and formulated using the highest-quality pigments, water-soluble resins, and natural gums. Produced in Germany since 1881, the company is now owned by the fourth generation of the original family. Today the line includes an array of brilliant, intense, professional-quality colors — many of them with the highest lightfastness ratings of 4 or 5 stars. Smooth flowing and intermixable, colors that have dried on the palette can be reactivated with a wet brush.
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.
Prussian Blue
- Pigment code
- PB27
- Type
- inorganic
- Chemical name
- ferric ferrocyanide/iron(III)-hexacyanoferrate(II)
- Chemical formula
- Fe7(CN)18(H2O)x or C6FeN6H4N
- Properties
- Prussian Blue is a semi-transparent, deep cyan-blue with a greenish undertone and a very high tinting strength unequaled by most pigments. It is similar to Phthalo Blue unless mixed with white, when it gives up intensity and becomes smoky. It can behave erratically and less reliably in oil and watercolor form depending on its manufacture. For permanent painting Phthalo Blue is considered a more reliable choice.
- Permanence
- Prussian Blue is lightfast and permanent in all techniques except for fresco. When mixed with Zinc White in watercolor or tempera form, it fades upon exposure to light and completely regains its chromatic strength in the dark. Modern manufacturing techniques have made this tendency less of an issue in recent years
- Toxicity
- Prussian Blue is moderately toxic if ingested. It will emit toxic hydrogen cyanide gas if heated, exposed to ultraviolet radiation, or treated with acid.
- History
- "The first of the modern pigments," Prussian Blue is the first artificial pigment with a known history. It was discovered by accident in 1704 by the Berlin color maker Heinrich Diesbach, who was trying to create a pigment with a red hue by mixing iron sulfate and potash. The potash Diesbach purchased from a local laboratory had been contaminated by animal oil and blood during previous experimentation. The resulting mixture yielded a very pale red that changed to purple and then deep blue when he tried to concentrate it. Since previous blue pigments came from lapis lazuli, an expensive stone, Diesbach’s discovery was extremely important for artists of the time.
- Description
- Berlin Blue, Bronze Blue, Iron Blue, Paris Blue, Paste Blue. Celestial Blue, Monthier Blue and Soluble Blue are varieties of Prussian Blue. Blue Lake is a reduced or let-down variety of Prussian Blue. Chinese Blue, Milori Blue, and Steel Blue are the three highest grades of Prussian Blue.
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