R&F Encaustic Paint Block - Phthalo Blue, 40 ml

It is very powerful and makes very clean tints. Greener than Ultramarine and Cobalt Blues.

• Pigment Composition: PB15:3-Phthalo Blue
• Paint Lines: Encaustic, Pigment Stick
• Opacity: Transparent
• Pigment Stick Drying Rate: Medium
• Classification: Synthetic Organic
• Chemical Composition: Copper Phthalocyanine
• Safety Information: Conforms to ASTM D-4236

Pigment Name: PB15:3-Phthalo Blue

Classification: Organic

Chemical Composition: Beta copper phthalocyanine

Properties

Phthalo Blue PB15:3 is a structural variant of Phthalo Blue PB15 that produces more greenish tones.

Permanence

Phthalo Blues are lightfast, stable, and permanent for all paint uses. Due to their stability, they are currently used in inks, coatings, and many plastics and are considered a standard pigment in printing ink and the packaging industry.

Toxicity

Phthalo Blues have no significant hazards, although those made before 1982 contained some PCBs (polychlorinated biphenyls).

History

Developed by chemists using the trade name Monastral Blue, the organic blue dyestuff, now known as Phthalo Blue, was presented as a pigment in November 1935 in London. Its discovery was accidental. The dark colour was observed in a kettle where a dye was being made from a British dyestuff plant. The demand for such a pigment came from commercial printers who wanted a cyan to replace Prussian Blue.