Sennelier Artists' Extra Fine Oil Paint - Chromium Green Light, 200 ml tube

Pigment Information

This color contains the following pigments:

PG36-Phthalo Green

PO43-Perinone Orange

PW6-Titanium White

PR107-Antimony Vermilion

Pigment Name

PG36-Phthalo Green

Pigment Type

organic

Chemical Name

polybromopolychlorinated copper(II) phthalocyanine

Chemical Formula

C32H3Cl13CuN8 to C32HCl15CuN8 or C32H16CuN8Cl15 (PG7) or C32Br6Cl10CuN8 (PG36)

Properties

Phthalo Green is a transparent, cool, bright, high intensity color used in oil and acrylics. It comes from a Phthalocyanine Blue pigment where most of the hydrogen atoms have been replaced with chlorine, forming highly stable molecules.  Pigment PG36 differs from PG7 in that a portion of the chlorine atoms are replaced with bromine atoms, which are reactively similar, but cause a yellow shift that is especially noticeable in mixtures. Phthalo Green has similar pigment properties and permanence to Phthalo Blue. It is slow drying and an excellent base color for mixing a range of bright greens. Phthalo Green is considered a very good alternative to Viridian because it is intense and mixes well and can be used to emphasize mineral colors in various tints. However, its tinting strength is very high, so it can overpower other colors.  This pigment most closely resembles the discontinued and toxic Verdigris.

Permanence

Phthalo Greens are completely lightfast and resistant to alkali, acids, solvents, heat, and ultraviolet radiation. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.

Toxicity

Phthalo Green has no significant hazards, but it contained PCBs (polychlorinated biphenyls) until 1982.

History

This bright blue-green was developed in 1935 and has been in use since 1938.

Pigment Name

PO43-Perinone Orange

Pigment Type

vat, anthraquinone

Chemical Formula

C26H12N4O2

Properties

Perinone Orange is a strong, clean, reddish orange pigment classified as a vat pigment. It has an average drying time.

Permanence

Perinone Orange has excellent lightfastness and weatherfastness.

Toxicity

Perinone Orange is not considered toxic.

History

Perinone orange is often used in plastics and vinyls, automotive finishes, and printing inks. Its high cost limits its application to products for which superior lightfastness and weather resistance is essential. In textiles, it is used in synthetic fabrics that must survive in harsh conditions, such as tents and awnings.

Pigment Name

PW6-Titanium White

Pigment Type

inorganic

Chemical Name

titanium dioxide

Chemical Formula

TiO2

Properties

Titanium White is the most brilliant of the white pigments. It is considered an all purpose oil color useful in all techniques and the best all around white. Its masstone is neither warm nor cool, placing it somewhere between Lead White and Zinc White. It is less prone to cracking and yellowing than Lead White, but it still yellows easily. Titanium White dries slowly in oil form, more slowly than Lead White but more quickly than Zinc White. It is opaque in oil and acrylic forms and semi-opaque in watercolor form. This pigment has good chemical stability, and its tinting strength is superior to both Lead White and Zinc White.

Permanence

Titanium White has excellent permanence and lightfastness.

Toxicity

Titanium dioxide is highly stable and is regarded as non-toxic.

History

Titanium is the ninth most abundant element in the Earth's crust, however mineral deposits that are economical to mine are less common. Titanium dioxide was first discovered in 1821, although it could not be mass produced until 1919. Widespread use of the pigment began in the 1940s. Since that time, it has become the most commonly used white pigment. The name comes from the Latin word Titan, the name for the elder brother of Kronos and ancestor of the Titans, and from the Greek word tito, meaning day or sun.

Pigment Name

PR107-Antimony Vermilion

Pigment Type

inorganic

Chemical Name

antimony trisulfide

Chemical Formula

Sb2S3 or Sb2S5 or Sb2S3 + Sb2O3

Properties

Depending on conditions, the pigment can range from orange to deep red. It is insoluble in water. Because it is heat resistant, it has been used to color glass.

Permanence

Lightfast and permanent, although it blackens on contact with lead pigments.

Toxicity

Antimony Vermilion is highly toxic by inhalation and ingestion. Skin contact can cause allergies and ulcers. It reacts explosively with some organic materials.

History

Antimony trisulfide was synthesized in 1842, and was used in artist pigments during the 19th century. Antimony Vermilion developed a bad reputation in the 19th century because it reacted with lead. Antimony trisulfide pigments have been replaced by cadmiums.