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Bone Black 500g

SKU: NAP-480-4050
The minimum order amount for this product line is $30.00
Bone Black 500g
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 1   US$ 29.14 
 2   US$ 28.97 
 3   US$ 28.86 
 4-5   US$ 28.79 
 6-7   US$ 28.69 
 8-11   US$ 28.62 
 12+   US$ 28.51 
Price: US$ 29.14
US$ 29.14

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Product description

Bone black is an impure black carbon pigment prepared from charring animal bones. Bone black is described in literature as being a deep blue-black to brown black color. It is composed of about 10% to 20% carbon and 80% calcium phosphate along with smaller amounts of other inorganic minerals. A fine particle size and high carbon content grade of bone black is sold commercially as ivory black.

Pigment Names
Current Names: English: bone black
Dutch: beender zwart
French: noir d'os
German: Beinschwarz
Italian: nero di osso
Portuguese: preto de osso
Russian: костяной черный
Spanish: negro de hueso
Synonyms: English: ivory black
Dutch: ivoor zwart
French: noir d'ivoire
German: Elfenbeinschwarz
Italian: nero d'avorio
Russian: слоновой кости черный
Spanish: negro de marfil
Alternate Names: English: animal black, animal charcoal, bone char, bone charcoal, drop black, ivory black, Frankfort black, German black, ossa sepiae, Paris black

Origin and History of Use
Numerous identifications of bone black are reported in literature. Bone black has been identified in prehistoric paintings and found in Egyptian, Greek and Roman art. It is found throughout European medieval and Renaissance art and later in both oil and watercolor paintings until modern times.

Many old masters used bone black in their work. In Rembrandt's paintings, the dark-colored umbers night have been almost enough for the background shadows, but the black clothing worn by his sitters called for an intense black pigment.

In the 19th century, a fine grade of bone black was sold as ivory black and an inferior grade sold as Paris black.

Bone black is animal charcoal prepared from bones, which have been exposed to high temperatures (550° C.) without access of air. The bones are roasted in closed vessels. The residue of the ignition is a black matter, which, when reduced to powder, forms bone black, sometimes incorrectly called ivory black. Ivory by carbonization will furnish a black, which, on account of its fineness and intensely black color, is more esteemed than the ordinary bone black, but it is much more expensive and largely unavailable today.

In manufacturing bone black, the bones are first boiled in water or a solvent to remove the fat and then subjected to destructive distillation in closed containers, vented to remove the ammonia, called bone-spirit, together with a dark tarry liquid (bone-oil). When the bones cease to release vapors, the residue is charred bone or bone black. Bone consists of protein collagen with inorganic matter. As a result of the decomposition of the animal matter in this destructive distillation, the nitrogen and hydrogen, united as ammonia, and a part of the charcoal, in the form of carbonic acid gas, distill over, while the remainder of the charcoal is left in the closed containers.

Carbon pigments formed by the pyrolysis of animal matter, such as ivory black and bone black, fall within the category of cokes as the protein collagen softens or liquefies before charring. Cokes are defined as a carbonized matter from a precursor in a liquid or plastic state. They thus do not show evidence of their former structure but rather form irregular, porous lumps. Ivory and bone contain a high percentage of inorganic matter, elephant ivory about 55%. The inorganic components of this latter material are comprised of calcium phosphate (82%), magnesium phosphate (15%), and calcium phosphate (2%), and consequently the pigments formed from these contain an even higher proportion of inorganic material, mostly as hydroxyapatite, Ca5(OH)(PO4)3.

Maximilian Toch describes how ivory black differs from bone black, "Ivory black is prepared from charred ivory, and contains only about 20% of carbon black, the balance of it being phosphate of lime or bone material, but it is unlike any other black, on account of its intensity." (Materials for Permanent Painting, p. 134) Today, ivory black is no longer made in commercial amounts so that pigments and paints named ivory black do not contain charred ivory but rather are a fine particle size grade of bone black with a high carbon content.

Natural Pigments uses the term "bone black" to describe its grade of bone black pigment with a high carbon content of at least 18% and very fine particle size. Other manufacturers would typically designate this grade of bone black as "ivory black."

Permanence and Compatibility
Bone black is a permanent color for all uses on the artist's palette. The stable blue-black pigment is denser than carbon black and has a good working quality for oil paints and watercolors. It is compatible with all other pigments and can be used with good results in all mediums.

Oil Absorption and Grinding
Bone black absorbs a moderately high amount of oil. The oil absorption ratio is 40–50 parts by weight of linseed oil to 100 parts by weight of pigment. If the measurement were grams, it would require about 40 grams (by weight) of raw linseed oil to grind 100 grams (by weight) of bone black to form a stiff paste. It makes an average drying oil paint.

Bone black is not considered hazardous, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

Rublev Colours Pigment: Bone Black
Rublev Colours Pigment: Bone Black

Pigment Information
Color: Black
Colour Index: Pigment Black 9 (77267)
Chemical Name: Hydroxyapatite (calcium phosphate) and carbon
Chemical Formula: Ca5(OH)(PO4)3 and C
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Density: 2.29
Oil Absorption: 40-50 grams oil/100 grams pigment
Refractive Index: 1.65-1.70


Color: Black
Color Index: Pigment Black 9 (77267)
Chemical Name: Hydroxyapatite (calcium phosphate) and carbon
Acrylic: I
Oil: I
Watercolor: I
Density: 2.29
Oil Absorption: 40-50 grams oil/100 grams pigment
Refractive Index: 1.65-1.70

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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Product weight: 1.10 lbs

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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Bone Black 500 g
Rublev Colours Pigment: Bone Black

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