ONE THAT COMES IN A PACKAGING THAT IS INNOVATIVE, ELEGANT, HANDY AND FEELS RIGHT.
Iridescent, developed in 1796, means “rainbow” and described as whatsoever metamorphosed into yielding a rainbow of brilliant, intense, penetrating, luminous colour sheen that reflects changes of colour in the light.
COMPOSITION AND PERMANENCE
Pigment Combination: Iridescent, PY3-Hansa Yellow 10G, PBk7-Lamp Black
1 PIGMENT NAME: PY3-HANSA YELLOW 10G
Pigment Type: Organic, monoazo
Properties
This Hansa yellow is transparent. It has excellent brightness and tinting strength, and its drying time ranges from average to slow. Hansa Yellow makes more intense tints and cleaner secondaries than Cadmium Yellows, especially when mixed with other organic or modern colours like Phthalo Blue and Green. Because they are more transparent, they have great value as glazing colours.
Permanence
This Hansa Yellow has fair to good permanence, particularly in the lighter shades.
Toxicity
Hansa Yellow has no significant acute hazards, though its chronic hazards have not been well studied.
History
Hansa Yellows were first made in Germany just before WW1 from synthetic dyestuffs called Pigment Yellow. They were intended to be a synthetic replacement for Cadmium Yellow.
2 Pigment Name: PBk7-Lamp Black
Pigment Type: Inorganic
Chemical Name: Carbon
Properties
Lampblack is a very opaque, heavily staining black pigment that does not have much covering or tinting power. It is typically the opaquest black in watercolour form. Though a very pure black, it tends to muddy slightly in mixtures. Natural sources may be brownish or bluish in tone because of impurities. When used in oil paints, it is one of the slowest drying pigments and should not be used in underpainting or applied in layers underneath other colours.
Permanence
Lamp Black is very lightfast and permanent. It is used in all techniques in permanent painting.
Toxicity
Carbon itself is not considered hazardous; however, other combustion products that are hazardous are often present as impurities when Lamp Black is produced from natural materials. For this reason, commercial preparations of the pigment should be considered.
History
Lamp Black is a carbon-based black traditionally produced by collecting soot (known as lampblack) from oil lamps. It has been used as a pigment since prehistoric times. It is the black found in Egyptian murals and tomb decorations and was the most popular black for fresco painting until the development of Mars Black.
