Daniel Smith Extra Fine Watercolor – Joseph Z's Cool Grey, 15 ml tube
Daniel Smith Extra Fine Watercolor – Joseph Z's Cool Grey, 15 ml tube
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Pigment Information
This color contains the following pigments:
PV19-Quinacridone Violet
PBk6-Lamp Black
PB36-Cobalt Chromite Blue Green Spinel
Pigment Name
PV19-Quinacridone Violet
Pigment 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.
Toxicity
Quinacridone Violet has no known acute hazards. Overexposure to quinacridone pigments may cause skin irritation. Quinicridone pigments contain a compound found to be a skin, eye, and respiratory irritant.
History
Although quinacridone compounds became known in the late 19th century, methods of manufacturing so as to make them practical for use as commercial pigments did not begin until the 1950s. Quinacridone pigments were first developed as coatings for the automotive industry, but were quickly adopted by artists.
Pigment Name
PBk6-Lamp Black
Pigment 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.
Pigment Name
PB36-Cobalt Chromite Blue Green Spinel
Pigment Type
inorganic
Chemical Name
Oxides of Cobalt and Chromium
Chemical Formula
Co(Al,Cr)2O4
Properties
Cobalt Chromite Blue is an opaque pigment with moderately low tinting strength.
Permanence
Cobalt salts have excellent lightfastness and temperature stability.
Toxicity
Cobalt salts are toxic when ingested or inhaled, and slightly toxic on contact with the skin. Evidence of Chromium(III) carcinogenicity is inconclusive. Chromium(III) salts appear in greenish pigments.
DJ284600245
TU
1
Watercolors
0.06
DS W/C 15ML JOSEPH Z COOL GREY