
Grumbacher Academy Oil Color - Raw Umber, 150 ml tube
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Blick Art Materials
$17.42 USDShop
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Product details
- Size
- 150 ml
- Blick SKU
- 00418-8074
About this product range
Grumbacher Academy Oils are available in a range of 45 highly pigmented colors offering superior tinting strength at an affordable student price. The line includes a variety of single-pigment colors, as well as mixed hues and metallics. Every color in the range boasts an ASTM lightfast rating of ‘1-Excellent’ and most correlate to the Pre-Tested Professional line, allowing students to graduate to a professional-grade paint with ease.
The majority of colors in the range are ground in pure linseed oil. Titanium White Soft is ground in a mixture of linseed and poppyseed oil. Titanium White, Unbleached Titanium White, Zinc White, Pale Pink, Lemon Yellow, and Thalo Silver are ground in sunflower oil.
Pigment information
General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.
Raw Umber
- Pigment code
- PBr7
- Type
- earth
- Chemical name
- hydrated iron oxide
- Chemical formula
- α-FeO3+(OH) or Fe2O3 × MnO2
- Properties
- Raw Umber is a cool, transparent brown ranging from yellowish brown to greenish brown. It has surprisingly good tinting strength, a high level of opacity, mixes well with greens, and is quick drying in oil form. It has excellent color properties and can create a variety of subtle, clear tints when mixed with white. It grays when mixed with blue and white. Raw Umber can tend towards chalkiness in dark mixes in oil form.
- Permanence
- Raw Umber has excellent permanence.
- Toxicity
- Raw Umber itself is considered non-toxic. If contaminated by manganese compounds, it may be highly toxic if inhaled and moderately toxic if ingested.
- History
- This pigment gets its name from the Latin word umbra, meaning shadow or shade. Its full name is listed as terra di ombra, meaning earth of shadow/shade, due to its original extraction from the area of Umbria, Italy. It has been used as a pigment since prehistoric times. Currently, the finest umber comes from Cyprus.
- Description
- Chestnut Brown, Euchrome, Jacaranta Brown, Mars Brown, Raw Brown, Sicilian Brown. Cyprus Umber, Turkey Brown, and Turkey Umber are the best quality umbers.
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