Disodium 7,7'-(carbonyldiimino)bis(4-hydroxynaphthalene-2-sulphonate) [ 20324-87-2 ]
- Product Code
- 101720
- Cas Number
- 20324-87-2
Specification:
Appearancedry grey-white powder
Content≥85%≥70%
Free J acid≤0.5%(HPLC)≤2%
Chloride value≤ 7%
Insoluble solid≤0.3%≤0.5%
Description:
C.M.F:C21H14O9N2S2Na2
M.W:548.48
Use:used as azo medium. Mainly used for the preparation of direct orange S and direct acid-proof bright-red 4BS
Package:25kg-plastic-woven bag lined with a plastic bag inside
Appearancedry grey-white powder
Content≥85%≥70%
Free J acid≤0.5%(HPLC)≤2%
Chloride value≤ 7%
Insoluble solid≤0.3%≤0.5%
Description:
C.M.F:C21H14O9N2S2Na2
M.W:548.48
Use:used as azo medium. Mainly used for the preparation of direct orange S and direct acid-proof bright-red 4BS
Package:25kg-plastic-woven bag lined with a plastic bag inside