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These artist grade watercolors continue the Blockx family legacy that began in 1865. They are made using the same processes developed many years ago. Pigments are mixed with only the finest quality ingredients, including the purest gum arabic and honey.
Color Swatches created using heavy application/diluted application and were applied on cold press watercolor paper (150 lb) material.
1,4-diketo-3,6-di(4'-tertiary butyl phenyl)-2,5-dihydro pyrrolo[3,4-c]pyrrole
This bluish red transparent pigment has high tinting strength. Diketo pyrrolo pyrrole pigments are noteworthy for their light stability, excellent weatherability, and outstanding heat stability.
Pyrrole Rubine has excellent permanence and lightfastness for an organic pigment in its color range.
Pyrrole pigments are considered to be non-toxic.
The Pyrrole group of synthetic organic pigments was developed in the 1980s. Pyrrole Rubine was first manufactured by Ciba Specialty Chemicals under the trade name Irgazine Ruby. Although not a perfect match for alizarin crimson, Pyrrole Rubine is one of several new pigments that has helped to close a traditional gap in the gamut of artist pigments, the lack of lightfast and transparent colors in the red/blue and red/violet parts of the spectrum.
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® Blockx is a registered trademark.