Preparation
2,4-Dinitrophenol and Picric acid?or 2-Amino-4,6-dinitrophenol mixture with Sodium polysulfide solution heating.
Properties and Applications
blue black. In the Sodium sulfide solution solubility is very good, solution for blue black; In concentrated sulfuric acid for the blue black, dilution after black precipitation.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Fulling
|
Persperation Fastness
|
Soaping
|
|
Moderate
|
Severe
|
|
ISO
|
5
|
4
|
6-7
|
5
|
5
|
5
|
4-5
|
|
AATCC
|
5
|
3
|
7-8
|
4
|
|
|
4-5
|
