Color Swatch created using heavy application/medium application/50% tint and was applied on acrylic primed canvas (7 oz) material.
This color contains the following pigments:
PBk28—Black Spinel
Pigment Type
inorganic
Chemical Name
copper chromite black
Chemical Formula
n/a
Properties
Black Spinel is a very neutral opaque black pigment, excellent for tinting to create neutral grays.
Permanence
Black Spinel has excellent lightfastness.
Toxicity
Black Spinel is mildly toxic. The pigment itself has an extremely fine particle size. It causes irritation and ulceration to skin. Respiratory exposure and exposure to dust are serious concerns.
History
Black Spinel is much more expensive than carbon-based blacks. Its use as a pigment has been limited to applications where a truly neutral black or gray tone is needed.
Alternate Names
Jet Black, Ebony Black, Neutral Black, Copper Chromite Black.
PBr24—Chrome Antimony Titanate
Pigment Type
inorganic
Chemical Name
chrome antimony titanate
Chemical Formula
n/a
Properties
Chrome Antimony Titanate is a staining, opaque yellowish brown pigment. It is often used to replace the original Naples Yellow or Chrome Yellow, both of which are highly toxic pigments.
Permanence
Chrome Antimony Titanate has excellent lightfastness and weatherfastness.
Toxicity
Chrome Antimony Titanate has negligible acute toxicity. In testing with rabbits, it was shown to be minimally irritating to the skin and eyes. Since it has the hexavalent structure of a chromium yellow, whether Chrome Antimony Titanate is a potential carcinogen has been a subject of controversy. At this time, regulations in the USA do not require it to be labeled in any way.
History
Chrome Antimony Titanate is used in ceramics, plastics, and industrial coatings.
Alternate Names
Chrome Antimony Titanium Buff Rutile, Chrome Titanate, Chrome Titanate Brown
PG26—Cobalt Green Deep
Pigment Type
inorganic
Chemical Name
Cobalt chromium oxide
Chemical Formula
n/a
Properties
This pigment offers a deep but dull and opaque tone of Cobalt Green. It has moderate covering power, but low tinting strength. It is primarily for use on its own, or for mixing with other cobalt colors. It is an alternative to cobalt(II) zinc oxide, another form of Cobalt Green.
Permanence
Cobalt pigments are absolutely lightfast.
Toxicity
Cobalt chromium oxide is slightly toxic, and is a possible carcinogen.
History
Cobalt chromium oxide is an alternative Cobalt Green to the better known cobalt zinc oxide. Both pigments were used by landscape artists before phthalocyanine-based pigments became widely available in the 20th century.
Alternate Names
n/a
