Sennelier Watercolour S3 Quinacridone Gold (599)

Quinacridone Gold (599) Nickel Azo Yellow is a transparent, moderately staining yellow pigment with high tinting strength. It is considered a good colour match in botanical and landscape painting for natural gamboge (NY24), a historic yellow pigment with fair to poor lightfastness. PR206 offers a deep maroon or Bordeaux red. Quinacridone pigments have relatively low tinting strength in general. Red iron oxide is the synthetic version of PR102, a pigment made from earth reds or natural red iron oxides. Synthetic red iron oxides have mostly replaced natural red iron oxides and are brighter, more robust, finer, and more permanent.

Pigment Name: PY150—Nickel Azo Yellow

Nickel Azo Yellow is a transparent, moderately staining yellow pigment with high tinting strength. It is considered a good colour match in botanical and landscape painting for natural gamboge (NY24), a historic yellow pigment with fair to poor lightfastness.

Chemical Name: nickel azomethine yellow.

Permanence: Nickel azomethine yellow has excellent lightfastness.

Toxicity: Nickel azo yellow pigment is mildly toxic and often labelled hazardous. Avoid respiratory and skin exposure to pigment dust. It should be disposed of properly with other hazardous wastes, not washed down the sink. However, the contribution of artist pigments to levels of nickel metal complexes in the environment is almost insignificant. Nickel is often present naturally in the environment. Nickel is used heavily in steelmaking and many industrial processes and products.

History: Nickel azomethine yellow has been developed as an artist's pigment because it is closely matched to gamboge, a historic yellow.

Alternate Names: Gamboge Hue, New Gamboge.

Pigment Name: PR206—Quinacridone Pyrrolidine Red

Quinacridone Pyrrolidine Red offers a deep maroon or Bordeaux red. Quinacridone pigments have relatively low tinting strength in general. For this reason, quinacridone colours are often expensive because more pigment is required in the formulation.

Chemical Name: quinacridone pyrrolidine. Chemical Name: quinacridone pyrrolidine.

Permanence: Quinacridone pigments have excellent lightfastness.

Toxicity: Quinacridone Pyrrolidine Red has no known acute hazards. However, overexposure to quinacridone pigments may cause skin irritation. Quinacridone pigments contain a compound that is a skin, eye, and respiratory irritant.

History: It was developed as a maroon or Bordeaux red for automotive paints.

Alternate Names: Monastral Maroon

Pigment Name: PR101—Red Iron Oxide

Red Iron Oxide varies in hue and transparency, depending on hydration and slight impurities. Indian Red is a slightly duller, deep brick hue with a bluish undertone. It is very dense and opaque, with excellent tinting strength and covering power. It is dependable when mixed with all other permanent pigments and yields good flesh tints when mixed with Zinc White.

It is the synthetic version of PR102, a pigment made from earth reds or natural red iron oxides, and the names applied to PR101 and PR102 often overlap. Synthetic red iron oxides have mostly replaced natural red iron oxides and are brighter, more robust, finer, and more permanent. Indian Red is the highest grade bluish shade. Light Red, English Red, and Venetian Red are yellowish shades. Mars Violet is a dull and subdued bluish or purplish oxide. Chemical Name: iron oxides (synthetic), iron oxide, silica, alumina, lime, and magnesia or hydrated iron oxide.

Chemical Name: iron oxides (synthetic), iron oxide, silica, alumina, lime, and magnesia or hydrated iron oxide.

Permanence: Red iron oxide is very lightfast and has excellent permanence.

Toxicity: Red iron oxide has no significant hazards.

History: Natural red iron oxide comes from the mineral ore hematite, which the ancient Greeks called bloodstone from the word hema, meaning blood. It is one of the oldest pigments, has been used by every major civilization, and was an essential mineral for medieval alchemists. It was not widely used in artists' materials until the 17th century and was not produced in large quantities until the 18th century.

Alternate Names: Indian Red, Colcothar, English Red, Light Red, Mars Red, Mars Violet, Morelle Salt, Pompeian Red, Indian Red, Red Oxide, Sinopia, Spanish Red, Terra Rosa, Tuscan Red, Venetian Red, Venice Red.