Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 178801229Generated: October 23, 2026

2-Amino-8-hydroxynaphthalene-6-sulfonic acid

2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-, diazotized, coupled with 2,4-diaminobenzenesulfonic acid, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and m-phenylenediamine, sodium salts

https://huagongshe.com/en/chemical/178801229

2-Amino-8-hydroxynaphthalene-6-sulfonic acid molecular structure

Identifiers & Physical Properties

CAS No.90459-20-4
Molecular formulaC10H9NO4S
Average molar mass239.25 g/mol
SMILESNc1ccc2cc(S(=O)(=O)O)cc(O)c2c1
InChIKeyHBZVNWNSRNTWPS-UHFFFAOYSA-N
ChEMBLCHEMBL3087995
EC No.202-000-8

Chemical & Physical Properties

XLogP-0.9
Topological polar surface area109
Hydrogen bond donors3
Hydrogen bond acceptors5
Rotatable bonds1
Heavy atoms16
Formal charge0
Complexity350
Physical DescriptionDry Powder

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 5.2% (113 of 2181) of reports.DangerH314 (94.4%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 2181 reports by companies from 9 notifications to the ECHA C&L Inventory.
Regulatory information2-Naphthalenesulfonic acid, 6-amino-4-hydroxy- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2-Naphthalenesulfonic acid, 6-amino-4-hydroxy- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 06-12-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/102092-Naphthalenesulfonic acid, 6-amino-4-hydroxy-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazard Classes and CategoriesSkin Corr. 1B (94.4%)