Direct Red 81 free acid
25188-42-5O=C(Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(S(=O)(=O)O)cc4)cc3)c(S(=O)(=O)O)cc2c1)c1ccccc1IGXZMQCLUNTWCC-UHFFFAOYSA-NSirius red 4B (acid form) is a naphthalenesulfonic acid that is 7-amino-4-hydroxy-3-({4-[(4-sulfophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonic acid in which one of the amino hydrogens is replaced by a benzoyl group. The disodium salt is the histological dye 'Sirius red 4B'. It has a role as a fluorochrome, a poison, a histological dye and an environmental contaminant. It is a member of azobenzenes, a member of benzamides, a member of naphthols, a naphthalenesulfonic acid and a bis(azo) compound. It is a conjugate acid of a Sirius red 4B(2-).
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
This chemical does not meet GHS hazard criteria for 99.1% (107 of 108) of all reports.
Not Classified
Aggregated GHS information provided per 108 reports by companies from 3 notifications to the ECHA C&L Inventory.
DefinitionChEBI: A naphthalenesulfonic acid that is 7-amino-4-hydroxy-3-({4-[(4-sulfophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonic acid in which one of the amino hydrogens is replaced by a benzoyl group. The disodium salt is the histological dye 'Sirius red 4B'.
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25188-42-5DTXSID6041553CHEMBL3306477CHEBI:88192