应用领域
油墨染料, 皮革染料, 油漆染料, 纸张染料, 纺织染料
Appearance
Uniform black powder
Coloured light
With standard approximation
Strength
For the standard of 100 points
Impurity content of insoluble in water
≤1%
In the dyeing fastness of cotton fabric
Accord with a standard grade