|
| 2-Naphthalenesulfonic acid, 3,3'-[carbonylbis(imino-3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt Basic information |
| 2-Naphthalenesulfonic acid, 3,3'-[carbonylbis(imino-3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt Chemical Properties |
| 2-Naphthalenesulfonic acid, 3,3'-[carbonylbis(imino-3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt Usage And Synthesis |
Preparation | N,N’-bis(3-aminophenyl)urea double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled. | Properties and Applications | Claret. Soluble in water for orange brown, soluble in ethanol for orange. In the strong sulfuric acid to red, shallow orange for diluted. The dye solution to join strong hydrochloric acid for red orange brown, have precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation; Add 10% sodium hydroxide solution color micro become yellow.
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Soaping
|
Water
|
Fading
|
Stain
|
Fading
|
Stain
|
ISO
|
4
|
5
|
1
|
4
|
|
3-4
|
|
AATCC
|
5
|
5
|
1-2
|
3
|
|
4
|
|
|
| 2-Naphthalenesulfonic acid, 3,3'-[carbonylbis(imino-3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt Preparation Products And Raw materials |
|