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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

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IUPAC name:
Reaction products of diazotized 4-amino-6-[(4-aminophenyl)diazenyl]-3-[(4-aminophenyl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid, coupled with benzene-1,3-diamine, sodium salts


CAS number:
Reaction products of diazotized disodium 4-amino-3,6-bis[(4-aminophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonate, coupled with m-phenylenediamine

Molecular and structural information

Molecular formula:
Unknown for all components

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