Description
CI 73900 is classed chemically as a quinacridone colour.
Chemical Properties
The parent compound Pigment Violet 19 exists in three polymorphic modifications. The red gamma and violet beta forms are commercial pigments, whereas the red alpha form is metastable.
Uses
Quinacridone is mainly used for coloring plastics, coatings, resins, coating printing, inks, paints, rubber (including synthetic rubber) and plexiglass, and can also be used for dope (slurry) coloring of synthetic fibers.
Definition
A lightfast pigment used in
paints, printing inks, plastics, etc.
Properties and Applications
|
TEST ITEMS
|
SPECIFICATION
|
|
APPEARANCE
|
VIOLET POWDER
|
|
SHADE
|
BLUISH
|
|
HEAT RESISTANCE
|
300 °C min
|
|
LIGHT FASTNESS
|
7-8
|
|
ACID RESISTANCE
|
5
|
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ALKALI RESISTANCE
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5
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FASTNESS TO BLEEDING
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5
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OIL ABSORPTION
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40-50%
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|
SPECIFIC SURFACE
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30 m
2
/g
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DENSITY
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1.50 g/cm
3
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RESIDUE ON 80 MESH
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5.0% max
|
|
WATER SOLUBLE
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1.0% max
|
|
VOLATITE 105 °C
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1.0% max
|
|
TINTING STRENGTH
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100-105 %
|
Toxics Screening Level
An initial threshold screening level (ITSL) will not be established due to the lack of sufficient toxicity data. Quinacridone is a solid with relatively low oral toxicity and therefore, emissions may be evaluated based on the National Ambient Air Quality Standards (NAAQS) for particulate matter less than or equal to 2.5 microns (PM2.5)
