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.
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
|
ALKALI RESISTANCE
|
5
|
FASTNESS TO BLEEDING
|
5
|
OIL ABSORPTION
|
40-50%
|
SPECIFIC SURFACE
|
30 m
2
/g
|
DENSITY
|
1.50 g/cm
3
|
RESIDUE ON 80 MESH
|
5.0% max
|
WATER SOLUBLE
|
1.0% max
|
VOLATITE 105 °C
|
1.0% max
|
TINTING STRENGTH
|
100-105 %
|