JOSPH ZS CL GRY 15ML

Item #:01767-2550
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Joseph Z's Cool Gray 2550
Joseph Z's Cool Gray 2550

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Product Details

Color:
Joseph Z's Cool Grey
Size:
15 ml
Mfg #:
284600245

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.

History


Safety Data Sheet

UPC Code: 743162034253

ASIN #: B07QGGJDHP