Order
Intermediate

7,7'-(Carbonyldiimino)bis(4-hydroxy-2-naphthalenesulfonic acid) disodium salt

C.A.S. No.: 20324-87-2

Chemical Formula: C21H14O9N2S2Na2

Molecular Weight: 548.461

Chemical name:

2-Amino Naphthylamine-4,8-Disulfonic Acid
 

 

Appearance

Grey Powder

Coupling Value

70% or 80% Min.

Free J Acid

3% Max.

Insoluble in water

1% Max.

Packing

25 kg woven bag