R&F Encaustic Block, Indian Yellow 40ml

R&F Encaustic Paint Block - Indian Yellow, 40 ml

A deep rich translucent yellow. The original Indian Yellow came from India. It was processed fom cow’s urine and used in Europe in the 18^th and 19^th centuries for watercolour. It was fugitive in oil. The modern version has the same warm tones as the original.

• Pigment Composition: PY83-Diarylide Yellow 83
• Paint Lines: Encaustic, Pigment Stick
• Opacity: Transparent
• Pigment Stick Drying Rate: Slow
• Classification: Synthetic Organic
• Chemical Composition: Disazo pigment
• Safety Information: Conforms to ASTM D-4236

Safety Warnings: This product contains cadmium, a chemical known to the State of California to cause cancer.

Pigment Name: PY83-Diarylide Yellow 83

Pigment Type: Organic, disazo

Chemical Composition: Disazo pigment

Properties

Diarylide Yellow is a semi-opaque, moderately staining, intense deep reddish yellow pigment with good tinting strength.

Permanence

Diarylide Yellow 83 has very good lightfastness and permanence. However, it can fade in tints, so some artists do not consider it suitable as an artists’ colour. Many other diarylide yellow pigments are reported to have fair to poor lightfastness, and some are completely fugitive. Diarylide Yellow 83 is reputed to be one of the most permanent of the entire group.

Toxicity

Diarylide Yellow has no significant acute hazards, but chronic hazards have not been well studied.

History

Diarylide Yellow comes from a family of azo pigments called Diarylide. These yellow hued pigments were developed around 1940 and are very important in printing inks.