CAS NO. 6428-33-7 | 7,7'-Iminobis[3-[[4-[(2,4-diaminophenyl)azo]-3-sodiosulfophenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium] salt |

7,7'-Iminobis[3-[[4-[(2,4-diaminophenyl)azo]-3-sodiosulfophenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium] salt

C.I.35300	Para Black O Extra
7,7'-Iminobis[3-[[4-[(2,4-diaminophenyl)azo]-3-sodiosulfophenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium] salt