Utrecht Artists' Oil Paint - Cadmium-Free Yellow Medium, 37 ml tube

Pigment Information

This color contains the following pigments:

PY73-Arylide Yellow

PY110-Isoindolinone Yellow

PY184-Bismuth Yellow

Pigment Name

PY73-Arylide Yellow

Pigment Type

monoazo

Chemical Formula

C17H15ClN4O5

Properties

This Hansa Yellow ranges from reddish yellow to greenish yellow with temperature shifts from cool to warm hues. It has good tinting strength and average to slow drying time.

Permanence

This Hansa Yellow has excellent lightfastness, particularly in the darker 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 a series of synthetic dyestuffs called Pigment Yellow. They were intended to be a synthetic replacement for Cadmium Yellow.

Pigment Name

PY110-Isoindolinone Yellow

Pigment Type

organic synthetic

Chemical Name

isoindolinone yellow

Properties

Isoindolinone Yellow is a high performance pigment of excellent brightness and an average drying time.

Permanence

Isoindolinone Yellow has excellent lightfastness.

Toxicity

Isoindolinone Yellow is not considered toxic.

History

The first isoindoline pigments were patented in 1946, and commercial production of pigments in this group began in the 1960s. Several isoindoline yellow pigments are available.

Pigment Name

PY184-Bismuth Yellow

Pigment Type

inorganic

Chemical Name

bismuth orthovanadate or bismuth vanadium oxide

Chemical Formula

BiVO4

Properties

Bismuth Yellow is an intense, light value, semi-opaque yellow pigment with good tinting strength.

Permanence

Bismuth Yellow has excellent lightfastness.

Toxicity

Bismuth orthovanadate is harmful if swallowed. It is irritating to the eyes, respiratory system, and skin. Exposure may cause conjunctivitis, rhinitis, and reversible irritation of the respiratory tract. More severe cases may cause bronchitis, bronchospas

History

Bismuth orthovanadate occurs naturally in several minerals. Although it was synthesized in the 1920s, it was not developed as a commercial pigment until the 1970s.