R&F Pigment Stick - Alizarin Orange, 38 ml
It is a translucent colour with a muted orange mass tone between cadmium and Mars orange. But its undertone is a surprisingly fiery orange-yellow that becomes lemony when extended.
- Pigment Composition: PR177-Anthraquinone Red; PY83-Diarylide Yellow 83
- Dimension: 38 ml. stick measuring 5" x 3/4" diameter
- Paint Lines: Encaustic, Pigment Stick
- Opacity: Transparent
- Pigment Stick Drying Rate: Slow
- Classification: Synthetic Organic
- Chemical Composition: Disazo pigment, anthraquinone pigment
- Safety Information: Conforms to ASTM D-4236
Pigment Name: PR177 Anthraquinone Red
Classification: anthraquinone
Chemical Composition: Disazo pigment, anthraquinone pigment
Properties
Anthraquinone Red is a magenta-coloured pigment that is transparent and moderately intense. It tends to fade in tints and is suitable for all media.
Permanence
Anthraquinone Red masstone has good lightfastness and permanence, while its tint lightfastness is moderate. Overall, lightfastness and permanence vary by brand.
Toxicity
Anthraquinone Red has no significant acute toxicity.
History
Anthraquinone pigments originated as textile vat dyes before being used as pigments. They became more popular with artists once it was discovered that careful preparation and grinding helped them retain the brilliance of colour.
Pigment Name: PY83 Diarylide Yellow 83
Classification: Synthetic Organic
Chemical Composition: Organic, disazo
Properties
Diarylide Yellow is a semi-opaque, moderately staining, intense, deep reddish yellow pigment with good tinting strength.
Permanence
Diarylide Yellow 83 has excellent lightfastness and permanence. However, it can fade in tints, so some artists do not consider it suitable as an artist’s colour. Many other diarylide yellow pigments are reported to have fair to poor lightfastness, and some are entirely fugitive. Diarylide Yellow 83 is 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 essential in printing inks.
