Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool.
Quick Facts Names, Identifiers ...
Acid orange 7
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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 |
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ChemSpider |
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ECHA InfoCard |
100.010.182 |
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UNII |
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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
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[Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2c3ccccc3ccc2O
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Properties |
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C16H11N2NaO4S (sodium salt) |
Molar mass |
350.32 g/mol |
Density |
1.525 g/cm3 |
Melting point |
164 °C |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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