Great American Handmade Pastel - SOM Dark Brown 1, 810.1

Item #:21925-8031
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Som Dark Brown 1
Som Dark Brown 1

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Product Details

Color:
SOM Dark Brown 1
No.
810.1

Pigment Information

This color contains the following pigments:

PBr33-Zinc Iron Chromite Brown

PBk28-Black Spinel


Pigment Name

PBr33-Zinc Iron Chromite Brown

Pigment Type

inorganic

Chemical Name

zinc-iron-chromite spinel

Chemical Formula

ZnO + Fe203 + Cr2O3

Properties

Zinc Iron Chromite Brown is a dark reddish brown pigment that is opaque and staining.

Permanence

Zinc Iron Chromite Brown is exceptionally lightfast, heat resistant, weather resistant, and durable.

Toxicity

Zinc Iron Chromite Brown has not been identified as hazardous, but it is likely to contain impurities that are irritating to the skin or lungs. Pigment from natural ores may contain traces of heavy metals.

History

Because of its exceptional durability and heat resistance, Zinc Iron Chromite is used as a brown pigment in ceramics.


Pigment Name

PBk28-Black Spinel

Pigment Type

inorganic

Chemical Name

copper chromite black

Chemical Formula

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.


Safety Data Sheet