Naphthol AS

Naphthol AS

Names
IUPAC name 3-hydroxy-N-phenylnaphthalene-2-carboxamide
Other names Naphtol AS, 3-hydroxy-2-naphthanilide, β-Hydroxynaphthoic anilide
Identifiers
CAS Number	92-77-3
3D model (JSmol)	Interactive image
ChemSpider	60085
EC Number	202-188-1
PubChem CID	66719
UNII	V3ZU6E76NB
InChI InChI=1S/C17H13NO2/c19-16-11-13-7-5-4-6-12(13)10-15(16)17(20)18-14-8-2-1-3-9-14/h1-11,19H,(H,18,20) Key: JFGQHAHJWJBOPD-UHFFFAOYSA-N
SMILES C1=CC=C(C=C1)NC(=O)C2=CC3=CC=CC=C3C=C2O
Properties
Chemical formula	C17H13NO2
Molar mass	263.30 g·mol−1
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GHS pictograms
GHS signal word	Warning
GHS hazard statements	H302, H315, H317, H319, H332, H335, H411
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Naphthol AS is an organic compound with the formula C₁₀H₆(OH)C(O)NHC₆H₅. It is the anilide of 3-hydroxy-2-carboxynaphthalene. Many analogous compounds are known, designated with a differing suffix. For example, in Naphthol AS-OL, the aryl substituent on nitrogen is C₆H₄-2-OCH₃. These compounds are used as coupling partners in the preparation of some azo dyes.^[1]

History

In 1911, it was found to be a good precursor to dyes for wool by chemists at K. Oehler Anilin- und Anilinfarbenfabrik Offenbach.^[2][3]

References

1. ↑ K. Hunger; W. Herbst (2012). "Pigments, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_371. 
2. ↑ Willy Herbst, Klaus Hunger (2009). Industrielle Organische Pigmente Herstellung, Eigenschaften, Anwendung (3. ed.). Wiley VCH. p. 201. ISBN 3-527-62496-1. 
3. ↑ US 0