Rublev Colours Natural Black Oxide is deep black with high tinting strength, opaque, and brushes long. This mineral black is from the last remaining European companies operating the ochre deposits in the French quarries in the heart of the Luberon Massif. A dense, permanent, black is a natural mineral, iron oxide. It is comparatively neutral in undertone and non-greasy compared to carbon blacks. It is a valuable color when these qualities are required.
Composition and Permanence| Natural Black Oxide | |
| Color: | Black |
| Binder: | |
| Additive(s): | None |
| Pigment Information | |
| Pigment: | |
| Pigment Classification: | Natural inorganic |
| Colour Index: | Pigment Black 11 (77499) |
| Chemical Name: | Natural Iron Oxide from magnetite ore |
| Chemical Formula: | Fe3O4 |
| CAS No. | |
| Properties | |
| Code: | 908 |
| Series: | 2 |
| Opacity: | Opaque |
| Tinting Strength: | High |
| Drying Rate: | Medium |
| ASTM Lightfastness: | I |
| Permanence: | A |
| Safety Information: | No acute or known chronic health hazards are associated with this product’s anticipated use (most chemicals are not thoroughly tested for chronic toxicity). Protect yourself against potentially unknown chronic hazards of this and other chemical products by keeping them out of your body. Do this by avoiding ingestion, excessive skin contact, and inhaling spraying mists, sanding dust, and vapors from heating. Conforms to ASTM D-4236 |
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Some separation of pigment and oil may occur in Rublev Colours Artist Oils, and it is a natural process when no wax or stabilizers are added to the paint to prevent it.
All color swatches on this website are approximations of the actual color of the oil paint. We have carefully matched the color in these pictures on calibrated color monitors to the actual color. However, your results may vary due to the wide variance among color monitors.
Color Swatch Note: The color swatch was created with a thick application of color (left side) and a tint (right side) made with equal parts of color and titanium white, applied to acrylic-primed cotton canvas.
Drawdown Note: The image of the “drawdown” shows a premixed paint film 6 mils (0.006 inches) thick, applied to a standard test card to examine color consistency, opacity, and other qualities. The drawdowns show the color’s full strength (mass tone) on the left and, on the right, mixed with titanium white at a 1:2 ratio. The bottom area of the drawdowns is scraped to show undertones.