Acid orange 7

Acid orange 7
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 Number	633-96-5^Y
3D model (Jmol)	Interactive image
ChemSpider	21171709^Y
ECHA InfoCard	100.010.182
PubChem CID	23682006
UNII	Q1LIY3BO0U^Y
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-1^Y Key: CQPFMGBJSMSXLP-UHFFFAOYSA-M^Y InChI=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-1 Key: CQPFMGBJSMSXLP-REWHXWOFAS
SMILES [Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2c3ccccc3ccc2O
Properties
Chemical formula	C₁₆H₁₁N₂NaO₄S (sodium salt)
Molar mass	350.32 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y (what is ^YN ?)
Infobox references

Acid orange 7, also known as 2-naphthol orange and Orange II, is a dye.

Produced by coupling reaction between 2-Naphthol, or β-naphthol and diazonium compound of sulfanilic acid.