Grumbacher Academy Oil Color - Cadmium Yellow Pale Hue, 37 ml tube

Pigment Information

This color contains the following pigments:

PW6:1-Buff Titanium

PY3-Hansa Yellow 10G

PY97-Permanent Yellow

Pigment Name

PW6:1-Buff Titanium

Pigment Type

inorganic

Chemical Name

titanium dioxide

Chemical Formula

TiO2

Properties

Buff Titanium is an warm, reddish, off-white pigment that shares the properties of Titanium White, including opacity and slow drying time.

Permanence

Buff Titanium is lightfast and permanant.

Toxicity

Titanium dioxide and iron oxide are naturally occuring and are abundant in the Earth's crust. Both are considered non-toxic. Particle sizes tend to be larger in Unbleached Titanium than for titanium dioxide pigments used in white paints.

History

Titanium dioxide often occurs in nature with iron oxide. Buff or unbleached titanium is a natural mineral form of titanium dioxide. A variety of processes are used to produce buff or unbleached titanium. Some manufacturers may add synthetic iron oxides to a titanium base, while others use naturally occuring titanium ores that contain impurities. In this respect, Buff Titanium or Unbleached Titanium is a color that that may vary from one manufacturer to another.

Pigment Name

PY3-Hansa Yellow 10G

Pigment Type

organic, monoazo

Chemical Formula

C16H12CL2N4O2

Properties

This Hansa yellow is a transparent yellow. It has great 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 colors like Phthalo Blue and Green. Because they are more transparent, they have great value as glazing colors.

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 a series of synthetic dyestuffs called Pigment Yellow. They were intended to be a synthetic replacement for Cadmium Yellow.

Pigment Name

PY97-Permanent Yellow

Pigment Type

organic, monoazo

Chemical Formula

C26H27ClN4O8

Properties

Permanent Yellow PY97 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. Similar in shade to Hansa Yellow 1, it offers much better fastness properties and good heat stability.

Permanence

Pigment PY97 has excellent lightfastness, particularly in the darker shades.

Toxicity

No significant acute hazards of PY97 are known, though 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. Permanent Yellow (PY97) represents a further development of this line, with the aim of producing a yellow pigment that is suitable for exterior use.