Names
IUPAC name sodium 4-[(2E)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]benzenesulfonate
Other names 2-naphthol orange, Orange II, CI 15510, D&C Orange 4, COLIPA C015
Identifiers
CAS NumberY
3D model (JSmol)
ChemSpiderY
ECHA InfoCard
PubChem CID
UNIIY
CompTox Dashboard (EPA)
InChI InChI=1S/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1YKey:CQPFMGBJSMSXLP-UHFFFAOYSA-MYInChI=1/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1Key:CQPFMGBJSMSXLP-REWHXWOFAS
SMILES [Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2c3ccccc3ccc2O
Properties
Chemical formulaC16H11N2NaO4S (sodium salt)
Molar mass350.32 g/mol
Density1.525 g/cm3
Melting point164 °C
Except where otherwise noted, data are given for materials in their standard state (at 25°C [77°F], 100kPa). Yverify(what isYN?) Infobox references