Spanish red is a brown red natural earth based on hematite deposits in Spain containing 85% iron oxide. It is a strong tinting color that is opaque.
Rublev Colours Aqueous Pigment Dispersions are pigments dispersed in water ready to be mixed with water-based mediums. These dispersions are especially made for use with traditional painting mediums, such as egg, casein, fresco, watercolors and distemper (glue tempera). They are also ideally suited for use with gesso for making toned grounds for drawing and painting.
Pigment dispersions from Rublev Colours contain only naturally-derived ingredients, in addition to pigment and water, making them ideally suited for traditional and natural mediums. Unlike other pigment dispersions that are typically made for acrylic medium, Rublev Colours Aqueous Dispersions do not contain coalescent solvents, artificial dispersing resins and other additives that interfere with natural mediums.
Rublev Colours Aqueous Dispersions make preparing traditional mediums easy; you do not have to hassle with powders, grinding pigments with expensive tools and calculating pigment-binder ratios to make water-based paint. They make adding the right amount of paint binder simple and easy. For example, preparing egg tempera has never been easier, because the dispersion makes measuring the right amount of pigment easy—you simply add egg and stir—there's no guessing how much egg to add to the pigment.
|Pigment Names |
|Current Names: ||English: red oxide |
French: oxyde rouge
German: Oxid rot
Italian: rosso ossido
Portuguese: vermelho óxido
Spanish: rojo óxido
|Historical Names: ||English: Spanish brown, red iron oxide, red oxide, ferric oxide, mineral rouge |
French: rouge Espagnol
Spanish: rojo español
|Synthetic Names: ||Mars red is the name given to the synthetic precipitated form of red iron oxide. |
Origin and History
Spanish red was the name given to red ocher and iron oxides produced in Spain since antiquity. After the 16th century, red ocher pigments produced in other countries were often given the name of "Spanish red" because of the popularity of the pigment among artists. Natural reds such as Spanish red or Persian red contain at least 50% iron oxide as hematite with tinting strength increasing with α-Fe2O3 content up to 95%.
Spanish red (red iron oxide) is produced in Spain by leaching a massive crude deposit with bacteria suspended in water. The mix is sprayed on the ore, and the run-off collected and chemically treated to recover high-purity iron oxide. The mine in Spain produces a red iron oxide purity that ranges from 83 to 88% by weight.
Permanence and Compatibility
Minerals containing iron oxide yield pigments that are nontoxic, non-bleeding, relatively inert, weather resistant, and light fast. Spanish red is permanent, light fast and can be used with all pigments and in all vehicles.
Oil Absorption and Grinding
Spanish red absorbs a moderate amount of oil.
Spanish red is not classified as harmful if swallowed or as irritating to the eyes or skin. Care should be used in handling the dry powder pigment to avoid inhaling the dust. Pigment: Spanish Red
|Pigment Information |
|Color: ||Red |
|Colour Index: || Pigment Red 102 (77491)|| |
|Chemical Name: ||Iron Oxide |
|Chemical Formula: ||α-Fe2O3 |
|ASTM Lightfastness Rating |
|Acrylic: ||I |
|Oil: ||I |
|Watercolor: ||I |
|Density: ||4.4g/cm3 @ 20º C |
|Hardness: || |
|Refractive Index: ||1.65 |
|Oil Absorption: ||28g oil/100 g pigment |