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Caran d’Ache Pastel Cubes have a soft, powdery texture that allows for generous shading. The 3-1/4” x 1/4" shape is easy to handle and the colors are very lightfast.
Color Swatches created using heavy to light application and were applied on 100 lb (163 gsm) drawing paper material.
beta-oxynaphthoic acid lake, manganese salt
Permanent Red is a common name used for the manganese salt of beta-oxynaphthoic acid (BONA) lake pigment PR:48. It is more blue than other shades of PR:48, with the exception of PR48:2. BONA pigment lakes have high tinting strength.
Beta-oxynaphthoic acid (BONA) lake pigments are more lightfast than their beta-naphthol counterparts. Although their lightfastness makes them the pigment of choice in many applications, they may shift slightly in color or lose intensity under some conditions. Pigment PR48:4 is considered more lightfast and durable than other PR48 salts.
Beta-oxynaphthoic acid may have been synthesized as early as 1887. Commerical use of BONA lake pigments began in the 20th century. Pigment PR48:4 is used in packaging and plastics.
Perylene Maroon is a transparent, dull to moderately dull, deep red pigment. Its transparency makes it useful as a glazing color. Its mixing complement is Phthalo Green, and together they produce a pure black that is darker than most carbon-based pigments. Perylene Maroon is not suitable for acrylics.
Perylene Maroon has excellent permanence and lightfastness, and it can be an appropriate replacement for Anthraquinone Red in watercolor form.
Perylene Maroon has no significant acute toxicity. Its long term hazards are currently unknown.
Perylenes have been used as vat dyes since 1912, but they were not manufactured and sold as pigments until 1957.
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Material Safety Data Sheet
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