Schmincke Horadam Aquarell Artist Watercolor - Shire Grey, Supergranulation, 15 ml, Tube

Pigment Information

This color contains the following pigments:

PY159-Zirconium Praesodymium Yellow

PB74-Cobalt Zinc Silicate Blue Phenacite

PBk11-Mars Black

Pigment Name

PY159-Zirconium Praesodymium Yellow

Pigment Type

inorganic

Chemical Name

zirconium, silica, praseodymium oxide

Properties

This greenish yellow pigment is temperature stable and is used for coloring enamels, glazes, and ceramics.

Pigment Name

PB74-Cobalt Zinc Silicate Blue Phenacite

Pigment Type

inorganic

Chemical Name

cobalt zinc silicate

Chemical Formula

(CoZi)2SiO4

Properties

Cobalt-zinc silicate is semi opaque and semi-soluble in water. It produces a warmer and darker blue that standard Cobalt Blue (PB28), and is used most often in glass and ceramics.

Permanence

Cobalt-zinc silicate is extremely lightfast and temperature stable.

Toxicity

Cobalt-zinc silicate is toxic, and its toxictiy may be of greater concern that for Cobalt Blue (PB28) because it is semi-soluble in water.

History

Since the discovery of processes for mining Cobalt Blue (PB28) in the 19th century, additional processes for manufacturing and purifying other cobalt salts have become available. Their use as artist pigments has followed.

Pigment Name

PBk11-Mars Black

Pigment Type

earth

Chemical Name

iron oxides

Chemical Formula

FeO or Fe2O3

Properties

Mars Black is an opaque black with a strong and cool masstone, a slightly warm tint, and a warm brown undertone. It is not as black as Ivory Black, but it dries more quickly and has three times the tinting strength. Mars Black is normally the only black available in acrylic form and that is safe to over paint. It can be used in all media without reservation and is widely used as an alternative to Lamp Black and Ivory Black.

Permanence

Mars Black is very lightfast with excellent permanence.

Toxicity

Mars Black has no significant hazards and is the only major black pigment considered non-toxic.

History

The word Mars refers to the Roman god of iron and war. Mars Black was developed in the early 20th century from inorganic, synthetic iron oxide.