39443-76-0

Benzenesulfonic acid, 2,4-diamino-, calcium salt (2:1), polymer with 1,3-benzenediamine, 1,3-benzenedicarbonyl dichloride and 1,4-benzenedicarbonyl dichloride

Benzenesulfonic acid, 2,4-diamino-, calcium salt (2:1), polymer with 1,3-benzenediamine, 1,3-benzenedicarbonyl dichloride and 1,4-benzenedicarbonyl dichloride