Naphthol AS

Names
Preferred 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 | 263.296 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]

## References

1. ↑ K. Hunger; W. Herbst (2012). "Pigments, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_371. ISBN 978-3527306732.
2. ↑ Willy Herbst, Klaus Hunger (2009). Industrielle Organische Pigmente Herstellung, Eigenschaften, Anwendung (3. ed.). Wiley VCH. pp. 201. ISBN 978-3-527-62496-6. https://books.google.com/books?id=zP0JXdYsWP0C&pg=PA201.
3. ↑ US patent 0

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*[CID]: Compound ID
*[H302]: Harmful if swallowed
*[H315]: Causes skin irritation
*[H317]: May cause an allergic skin reaction
*[H319]: Causes serious eye irritation
*[H332]: Harmful if inhaled
*[H335]: May cause respiratory irritation
*[H411]: Toxic to aquatic life with long lasting effects
*[P261]: Avoid breathing dust/fume/gas/mist/vapours/spray
*[P264]: Wash … thoroughly after handling
*[P270]: Do not eat, drink or smoke when using this product
*[P271]: Use only outdoors or in a well-ventilated area
*[P272]: Contaminated work clothing should not be allowed out of the workplace
*[P273]: Avoid release to the environment
*[P280]: Wear protective gloves/protective clothing/eye protection/face protection
*[P301+312]: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
*[P302+352]: IF ON SKIN: Wash with soap and water
*[P304+312]: IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
*[P304+340]: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
*[P305+351+338]: IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing
*[P312]: Call a POISON CENTER or doctor/physician if you feel unwell
*[P321]: Specific treatment (see … on this label)
*[P330]: Rinse mouth
*[P332+313]: If skin irritation occurs: Get medical advice/attention
*[P333+313]: If skin irritation or a rash occurs: Get medical advice/attention
*[P337+313]: Get medical advice/attention
*[P362]: Take off contaminated clothing and wash before reuse
*[P363]: Wash contaminated clothing before reuse
*[P391]: Collect spillage
*[P403+233]: Store in a well ventilated place. Keep container tightly closed
*[P405]: Store locked up
*[P501]: Dispose of contents/container to …