Benzenesulfonicacid, 4-[(2,4-diaminophenyl)azo]-, monosodium salt (9CI); Benzenesulfonic acid,p-[(2,4-diaminophenyl)azo]-, monosodium salt (8CI); C.I. 13220; C.I. DirectBrown 191; Direct Brown 191; Padding Brown J; Padding Brown N
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