Black Oxide Pigment

SKU: NAP-GROUP-938381
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Color
Black
Processing time
Usually ships the next business day.
Pigment type
Inorganic, Earth, Natural
Description

Rublev Colours black oxide is a dense, opaque, heavy color that is absolutely permanent. It is comparatively cool to neutral in undertone, wets easily, and is non-greasy, when compared to carbon blacks. It is a useful pigment when these qualities are required.

Pigment Names
Common Names: English: black oxide
French: oxyde noir
German: Oxid Schwarzes
Italian: ossido nero
Japanese: 酸化物黒
Portuguese: óxido preto
Spanish: óxido negro
Alternate Names: English: black iron oxide, iron oxide
French: fer oxydé, naturelle noir Indien

Mars black is the name given to synthetic black iron oxide.
Origin and History

Black oxide is a recent development in modern pigments and was unknown in artists' palettes before the nineteenth century.

Source

The source of black oxide usually is from an iron ore called magnetite. Magnetite, also known as lodestone, is a ferrous ferric oxide (ferrosic oxide) that is a heavy, black color and opaque. Theoretically, black iron oxide contains slightly more iron metal than red oxide but not nearly as much as yellow oxide. The native mineral may contain varying amounts of manganese, sulfur, clay and silica.

Permanence and Compatibility

Black oxide is absolutely permanent colors for all uses on the artist's palette. It is compatible with all other pigments, and can be used with good results in all mediums.

Oil Absorption and Grinding

Black oxide absorbs a moderately low amount of oil. The oil absorption ratio is 10–15 parts by weight of linseed oil to 100 parts by weight of pigment. If the measurement were grams, it would require 100 grams (by weight) of pigment to grind 10 to 15 grams (by weight) of linseed oil to form a stiff paste. It makes an average drying oil paint, and forms a hard, fairly flexible film.

Toxicity

Black oxide is not considered toxic, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

Rublev Colours Pigment: Black Oxide

Pigment Information
Color: Black
Colour Index: Pigment Black 11 (77499)
Chemical Name: Ferrous ferric oxide produced from magnetite
Chemical Formula: Fe3O4
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Properties
Density: 5.15
Hardness (Mohs): 5.5–6.0
Refractive Index: n=2.42
Shipping from
This product is shipped from our supplier's warehouse in Willits, CA, United States
Our guarantee
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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