| Characters：Brown black powder and soluble in water to become black with green light. Insoluble in other organic solvents. |
| Quality standard |
Index name |
Index |
Apperance strength，separated coloured light Color fastness in wool wool fabrics impurity content insoluble in water，% moisture content，% fineness（80 meshes residual content），%
|
brown black equal powder 100±3 of standard products similar to standard products accord to standard products ≤0.8 ≤8 ≤5
|
|
| Use： Used in silk and blending fabric dyeing, and used in leather, biology, wood and plastic dyeing. |
| Application performance：Colour fastness(grade) in cotton fabrics： |
Solarization |
Soaping |
Water leaching |
Perspiration |
Ironing |
Friction |
Acid and alkali resistance |
fading |
staining |
fading |
staining |
fading |
staining |
dry |
wet |
sulphuric acid |
acetic acid |
sodium carbonate |
3 |
3 |
1～2 |
3～4 |
1～2 |
3～4 |
2～3 |
3～4 |
3 |
1～2 |
3～4 |
4 |
3～4 |
|
