General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.
Indanthrene Blue
- Pigment code
- PB60
- Type
- organic, vat dyes
- Chemical name
- complex, insoluble anthraquinone
- Chemical formula
- C28H14N2O4
- Properties
- Indanthrene Blue is a clear, clean, deep blue organic pigment. It has moderate to high tinting strength and is not as overpowering as Phthalo Blue. Hansa Yellow Deep, Benzimidazolone Orange, and Raw Umber are its best mixing complements.
- Permanence
- Indanthrene Blue is permanent with excellent lightfastness in both masstone and tints.
- Toxicity
- Indanthrene Blue varies in its acute toxicity, though toxicity is generally slight.
- History
- Indanthrene Blue is the oldest vat dye, discovered and patented in 1901 by Rene Bohn. It is considered the first anthraquinone vat dye, a group of dyes characterized by excellent lightfastness. The pigment originates from this dye.
- Description
- Indanthrone.
Quinacridone Violet
- Pigment code
- PV19
- Type
- organic synthetic, quinacridone
- Chemical formula
- C20H12N2O2
- Properties
- Quinacridone Red is a high performance, transparent pigment with an average drying time and uneven dispersal. It is another name for Quinacridone Violet (PV19) and Quinacridone Red (PR192). Quinacridone pigments have relatively low tinting strength in general. For this reason, quinacridone colors are often expensive, because more pigment is required in the formulation.
- Permanence
- Quinacridone Violet has excellent lightfastness and is considered the most lightfast organic pigment in this shade range.
- Description
- Quinacridone Red (PR192), Quinacridone Red (PR19), Gamma Quinacridone (PV19)
Lamp Black
- Pigment code
- PBk6
- Type
- inorganic
- Chemical name
- carbon
- Chemical formula
- C
- Properties
- Lamp black is a very opaque, heavily staining black pigment that does not have much covering power. It is typically the most opaque black in watercolor form. Though a very pure black, it tends to muddy slightly in mixtures, is one of the slowest drying pigments in oils, and should not be used under other colors.
- Permanence
- Lamp Black is very lightfast and absolutely permanent. It is used in all techniques in permanent painting.
- Toxicity
- Lamp Black is slightly toxic by skin contact and inhalation. It is a possible human carcinogen.
- History
- Lamp Black is a carbon based black traditionally produced by collecting soot (known as lampblack) from oil lamps. It is the black found in Egyptian murals and tomb decorations and was the most popular black for frescoing until the development of Mars Black.
- Description
- Carbon Black, Channel Black, Oil Black, Vegetable Black. Flame Black is an impure version of Lamp Black.