Schmincke Horadam Aquarell Artist Watercolor - Volcano Brown, Supergranulation, Half Pan

Pigment Information

This color contains the following pigments:

PR108:1-Cadmium-Barium Red

PBk11-Mars Black

Pigment Name

PR108:1-Cadmium-Barium Red

Pigment Type

inorganic

Chemical Name

cadmium selenosulfide lithopone

Chemical Formula

CdS + CdSe + BaSO4

Properties

Cadmium Red PR108:1 shares the properties of Cadmium Red PR108, except that it is slightly more orange in tone and has lower tinting strength.

Permanence

Cadmium selenosulfide lithopone has excellent lightfastness. It shares the permanence of pure cadmium selenosulphide (Cadmium Red PR108).

Toxicity

Cadmium Red is a known human carcinogen. It is extremely toxic if inhaled and slightly toxic if ingested. Barium sulfate is extremely insoluble in water, and thus is not biologically active. It is used medically as a contrast medium in radiological proced

History

Cadmium Red PR108:1 is cadmium red pigment that contains 15% or more barium sulfate. It is used to create a fuller spectrum of reds and oranges from cadmiums, and also to create a less expensive alternative to PR108.

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.