Armenian Crimson Ocher Pigment

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SKU
453-11

Armenian Crimson Ocher is an iron oxide of a crimson red hue. We make our hematite from iron ore deposits in the Lori province of Armenia. It is a lustrous pigment of considerable tinting strength and opacity.

Series 3

Armenian Crimson Ocher is a natural earth containing clay tinted by iron oxide that gives an exceptionally cool red hue. Our Armenian Crimson Ocher contains about 15% iron oxide and 48% silica. Armenian Crimson Ocher is obtained from iron ore deposits in the Lori province of Armenia.

Source

Red ocher is a natural earth containing clay tinted by iron oxide and is composed of hematite, clay (aluminum silicate), quartz (silicate), calcite (calcium carbonate) and traces of other minerals. Hematite is a mineral composed of iron oxide minerals (α-Fe2O3) that occur as natural earth. Depending upon the content of iron oxide and other minerals, the color of red ocher varies from deep red to brownish red. Red iron oxide minerals, such as hematite, are found around the world and have been used as pigments since prehistory.

Permanence and Compatibility

Red ochers are among the most permanent colors among 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

Red ochers absorb a medium amount of oil (see table below), which may slow the drying of oil paint, but because iron oxide is a drier in oil, it dries fast and forms an excellent film.

Toxicity

Red ochers are not considered toxic, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

Pigment Information
Color: Red
Colour Index: Pigment Red 102 (77491)
Chemical Name: Iron Oxide
Chemical Formula: α-Fe2O3
Chemical Composition
SiO2: 58.67%
Al2O3: 17.06%
Fe2O3: 11.22%
MgO: 0.12%
CaO: 0.59%
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Properties
Bulk Density: 0.58 g/cm3
Oil Absorption: 26 g/100 g
Particle Size: sub-0 to 15 microns: 80-85%
16 to 29 microns: 15-20%
30 microns and above: 0.1%
Residual (Mesh 325): <0.1%
pH: 8.9
Thermal Color Stability: <850 °C
More Information
SKU453-11
BrandRublev Colours
VendorNatural Pigments
Processing TimeUsually ships the next business day.
ColorRed
Pigment TypeInorganic, Natural

Health and Safety

There are no acute or known chronic health hazards with the anticipated use of this product. Protect yourself against potentially known hazards by keeping it out of your body. Do this by avoiding ingestion, excessive skin contact and inhalation of dusts. Conforms to ASTM D4236.

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Armenian Crimson Ocher Pigment
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