
Product details
- Blick SKU
- 21918-9161
About this product range
Blockx Soft Pastels are handmade in Belgium using pure pigments in the same tradition started by company founder and chemist Jacques Blockx in 1844. Four subsequent generations of Blockx family members have combined traditional methods with modern chemistry to create artist's colors that are pure, permanent, lightfast, and stable.
Colors are named in such a way as to make it easy for artists to choose the exact shades they need. For example, Apple Green's five shades are: Apple Green 641, Apple Green 642, Apple Green 643, Apple Green 644, and Apple Green 645.
If the color name ends in:
- 1 — the pure color is upgraded with black
- 2 — this is the pure color
- 3 — the pure color is tinted with white
- 4 — the pure color is tinted with more white
- 5 — the pure color is tinted with much more white
These watersoluble pastels are soft and velvety in texture, possess a superb tinting strength, and will draw on any surface, although they're best-suited for pastel paper.
Individually wrapped pastel sticks are 2-1/2" L x 1/2" Dia (65 mm x 12 mm).
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.
Burnt Sienna
- Pigment code
- PBr7
- Type
- earth
- Chemical name
- iron oxides
- Chemical formula
- Fe2O3
- Properties
- Burnt Sienna is a warm, mid-brown color formed by burning the yellow-brown limonite clay called Raw Sienna. It ranges from semi-opaque to semi-transparent due to the combination of its opaque, red-brown mass tone and its transparent, orangey undertone. It is an excellent mixing complement for blues and greens and creates salmon or peach colored tints when mixed with white. It can be useful for subduing bright colors and does not get chalky in dark mixtures.
- Permanence
- Burnt Sienna has good permanence and is considered one of the most versatile of the permanent pigments.
- Toxicity
- Burnt Sienna has no significant hazards.
- History
- Burnt Sienna has been used as a pigment since prehistoric times, but its current name came about during the Renaissance. It comes from the city of Siena, in Italy, and is short for terra di Siena, meaning earth of Siena. Sienna was famous for the mining and production of earth pigments from the Renaissance until World War II. Due to the depletion of clay deposits in Tuscany, Italian siennas now come from other areas, including Sicily and Sardinia.
- Description
- Caput Mortuum, Italian Earth, Natural Brown Iron Oxide, Sienna, Spanish Red, Vandyke Brown.
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