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ArtistSupplySource.com » Painting & Painting Accessories » » » Natural Pigments Prussian Blue 1 kg - Color: Blue
 

Natural Pigments Prussian Blue 1 kg - Color: Blue

SKU: NAP-417-171K
Natural Pigments Prussian Blue 1 kg - Color: Blue
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 1   US$ 97.61 
 2   US$ 97.02 
 3   US$ 96.68 
 4-5   US$ 96.44 
 6-7   US$ 96.10 
 8-11   US$ 95.85 
 12+   US$ 95.51 
Price: US$ 97.61
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Product description

Details

Prussian blue, discovered in 1704 or 1705, is generally regarded as the first of the modern colors. In truth it is something of an anomaly, appearing well before the blossoming of chemistry as a science in the late eighteenth century. Like so many other innovations in color, it was the result of a serendipitous accident.

Color Names
Current Names English: Prussian blue
French: bleu prussien, bleu de Prusse
German: Preussisch Blau
Italian: azzurro di Prussia
Japanese: konjō, berensu
Russian: берлинская лазаурь
Spanish: azul de Prussia
Synonyms English: Berlin blue, iron blue, Milori blue, Paris blue, Turnsbull blue
German: Berlinerblau, Pariserblau, Turnbullsblau
Italian: azzurro di Berlin
Spanish: azul de Berlin
Origin and History

A Berlin-based color maker, Heinrich Diesbach, was working in the laboratory of the alchemist Johann Konrad Dippel, and in the course of preparing a red lake pigment, Diesbach asked Dippel for some potash (a potassium alkali).

Presumably to economize, Diesbach requested a batch of potash contaminated with oils prepared from animal blood. It was a false economy, for his pigment turned out very pale. Attempting to concentrate it, he succeeded instead in turning it deep blue. He had no idea what had transpired, but was astute enough to recognize the blue material as a potential pigment in its own right, and was soon manufacturing it according to a jealously guarded recipe.

Iron blue was first mentioned in 1710 in a Latin text written by an unknown author and its properties were described in a reference from 1726. It is said to have been discovered by the chemist and painter Diesbach in 1704, but other sources mention the chemist Johann Conrad Dippel, for whom Diesbach worked.

The first mention of its manufacture was by the English chemist John Woodward in 1726. Potash and ox blood were heated until they glowed and then subsequently boiled with rainwater. The "blood lye" obtained in this way was heated together with a sulfate and alum. This produced a green intermediate product, also called "mountain green" or "crysocollage green." The material was then washed and filtered. After a treatment with hydrochloric acid, the product eventually turned to a deep blue color. It was particularly valued for mixing light blues, and appears in skies by Watteau, Canaletto and Gainsborough.

Source

Our Prussian blue is made according to the process originated by the French colormarker, Milori & Company, Lyons, France, known as the Milori process.

Permanence and Compatibility

Prussian blue is stable in weak acids, but is decomposed by weak alkalis, so it is suitable for oil, encaustic (non-emulsified type), egg tempera and watercolor, but not fresco and casein.

Oil Absorption and Grinding

Prussian blue absorbs a moderately high amount of oil (45 grams of linseed oil per 100 grams of pigment) to make a paste.

Toxicity

Prussian blue is not considered toxic, however, care should be used in handling the dry powder pigment to avoid inhaling the dust.

Rublev Colours Pigment: Prussian Blue
Rublev Colours Pigment: Prussian Blue

Pigment Information
Color: Blue
Colour Index: Pigment Blue 27 (77510:1)
Chemical Name: Ammonium iron(III) hexacyanoferrate(II)
Chemical Formula: Fe(NH4) [Fe (CN)6]•xH2O
CAS Number: 25869-00-5
EINECS Number: 247-304-1
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Lightfastness (1–8)
Full Shade 7–8
Tint 2
Chemical Resistance (1–5)
Acid 4
Alkali 2
Properties
Specific Gravity (g/cm3): 1.80
Refractive Index: 1.56–1.662
Particle Size (Average): 400µm
pH (10% Aqueous Slurry):  3.0–5.0
Heat Stability: 177° C (350° F)
Oil Absorption (g oil/100g): 40–50 g
Munsell Value: 4.54PB 2.43/6.16




Specifications:

Color: Blue
Color Index: Pigment Blue 27 (77510:1)
Chemical Name: Ammonium iron(III) hexacyanoferrate(II)
CAS Number: 25869-00-5
Acrylic: I
Oil: I
Watercolor: I
Acid Number: 4
Refractive Index: 1.56–1.662
Average Particle Size: 400µm
pH:  3.0–5.0
Oil Absorption: 40–50 g
Munsell Value: 4.54PB 2.43/6.16


Natural Pigments

Natural Pigments is a limited liability company based in Willits, California. We manufacture and distribute rare and hard-to-find materials for fine artists and decorators. We specialize in supplying artists' materials that were used in historical painting since pre-historic times up to and including the nineteenth century.

We constantly search for materials and products of the finest quality so that we can bring them direct to you from the source. To do so, we travel the world to find materials specifically for use by professional artists and decorators. We obtain minerals from mines in Afghanistan, Chile, Russia, Ukraine and Uzbekistan, to name a few places, processing these into natural pigments. We purchase resins, gums and plants from India, Kenya and Malaysia to make natural varnishes and painting mediums.

Our mission is to provide the largest variety of natural pigments, paints and other professional artists' supplies, enabling us to bring you a selection that makes shopping for rare and hard-to-find art materials easy. Our objective is to promote the education and use of these materials among artists by providing detailed information for their employment in encaustic, fresco, oil, watercolor and tempera painting.
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This product is shipped from our warehouse in Gretna, NE, USA.
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
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Detailed images
Prussian Blue (Milori Blue) 1 kg
Prussian Blue (Milori Blue)




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