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;
ECHA InfoCard	100.001.990
EC Number	202-188-1;
PubChem CID	66719;
UNII	V3ZU6E76NB;
CompTox Dashboard (EPA)	DTXSID1052618 ;
	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	263.296 g·mol−1
Hazards
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H302, H315, H317, H319, H332, H335, H411
GHS precautionary statements	P261, P264, P270, P271, P272, P273, P280, P301+312, P302+352, P304+312, P304+340, P305+351+338, P312, P321, P330, P332+313, P333+313, P337+313, P362, P363, P391, P403+233, P405, P501
	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]

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References

K. Hunger; W. Herbst (2012). "Pigments, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_371.
Willy Herbst, Klaus Hunger (2009). Industrielle Organische Pigmente Herstellung, Eigenschaften, Anwendung (3. ed.). Wiley VCH. p. 201. ISBN 3-527-62496-1.
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[Ullmann1-1] K. Hunger; W. Herbst (2012). "Pigments, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_371.

[herbsthunger-2] Willy Herbst, Klaus Hunger (2009). Industrielle Organische Pigmente Herstellung, Eigenschaften, Anwendung (3. ed.). Wiley VCH. p. 201. ISBN 3-527-62496-1.

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