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Naphthol AS

Product Name:
Naphthol AS
CAS No.
92-77-3
Chemical Name:
Naphthol AS
CBNumber:
CB0697833
Molecular Formula:
C17H13NO2
Formula Weight:
263.29
MOL File:
92-77-3.mol
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Naphthol AS Property

Melting point:
246-248 °C(lit.)
Boiling point:
406.53°C (rough estimate)
Density 
1.1138 (rough estimate)
refractive index 
1.4500 (estimate)
solubility 
Solubility Insoluble in water; sparingly soluble in ethanol
pka
9.70(at 25℃)
form 
Powder
Colour Index 
37505
color 
Beige
PH Range
Non& uorescence (8.2) to yellow/green & uorescence (10.3)
λmax
394nm
Major Application
Sensors, recording materials, photovoltaic cells, copying materials, photoreceptors, lithographic printing plates, inks, toner, paints, textiles, detecting cancer
CAS DataBase Reference
92-77-3(CAS DataBase Reference)
EPA Substance Registry System
3-Hydroxy-2-naphthanilide (92-77-3)
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Safety

Hazard Codes 
Xi,N
Risk Statements 
43-51/53
Safety Statements 
36/37-61
RIDADR 
UN 3077 9/PG 3
WGK Germany 
1
RTECS 
QJ1897400
10-21
HazardClass 
9
PackingGroup 
III
HS Code 
29242990
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N-Bromosuccinimide Price More Price(2)

TCI Chemical Gold
Product number:
H0313
Product name :
3-Hydroxy-2-naphthanilide
Purity:
>97.0%(HPLC)(T)
Packaging:
25g
Price:
$20
Updated:
2020/06/24
Buy:
Buy
TCI Chemical Gold
Product number:
H0313
Product name :
3-Hydroxy-2-naphthanilide
Purity:
>97.0%(HPLC)(T)
Packaging:
500g
Price:
$76
Updated:
2020/06/24
Buy:
Buy
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Naphthol AS Chemical Properties,Usage,Production

Description

Naphtol AS is a coupling agent in cotton dying. Occupational dermatitis was reported in a woman involved in needlework, probably sensitized from occupational contact with clothes.

Chemical Properties

beige powder

Hazard

Low toxicity by ingestion.

Contact allergens

Naphthol AS is a coupling agent in cotton dyeing, inducing occupational dermatitis or contact allergy in consumers in contact with cotton-dyed clothing. It has been indirectly reported as a cause of occupational allergy due to its coupling with Diazo Component 51, or as a crosssensitizer or sensitizer associated with Pigment Red 23 in red parts of tattoos. Pigmented contact dermatitis is usual in patients with a high phototype.

Purification Methods

Crystallise it from xylene or AcOH which forms plates m 243-244o [Schnopper et al. Anal Chem 31 1542 1959]. [Beilstein 12 H 505.]

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Naphthol AS Suppliers

Global(172)Suppliers
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Fax:
86-10-82849933
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
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China
ProdList:
96815
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76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Fax:
86-21-61259102
Email:
sh@meryer.com
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China
ProdList:
40268
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3B Pharmachem (Wuhan) International Co.,Ltd.
Tel:
821-50328103-801
Fax:
86-21-50328109
Email:
3bsc@sina.com
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China
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15880
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TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Fax:
021-67121385
Email:
Sales-CN@TCIchemicals.com
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China
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24555
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81
Energy Chemical
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021-58432009
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021-58436166-800
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sales8178@energy-chemical.com
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China
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44026
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61
Adamas Reagent, Ltd.
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400-600-9262
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bxy@titansci.com
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13918
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Shanghai Longsheng chemical Co.,Ltd.
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021-58099652-8005;021-58099637-8009
Fax:
021-58099609
Email:
bin.wu@shlschem.com;sales@shlschem.com
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China
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Chengdu XiYa Chemical Technology Co., Ltd.
Tel:
;
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0539-6365991
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BEST-REAGENT
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Country:
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92-77-3, Naphthol ASRelated Search:

NAPHTHOL AS-BI PHOSPHATE Naphthol AS-E 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL 3-Hydroxy-N-(3-nitrophenyl)-2-naphthalenecarboxamide N-(5-Chloro-2-methylphenyl)-3-hydroxynaphthalene-2-carboxamide Naphthol AS-OL N-(2-ETHYLPHENYL)-3-HYDROXY-2-NAPHTHALENECARBOXAMIDE 2',4'-DIMETHYL-2-HYDROXY-3-NAPHTHOYLANILIDE 4'-Chloro-3-hydroxy-2'-methyl-2-naphthanilide 3-Hydroxy-2-naphthoyl-ortho-phenetidide XYLIDYL BLUE I SODIUM SALT Naphthol AS-D 3-HYDROXY-2-NAPHTHOYLANILIDE ACETATE N-(2-Hydroxynaphthoyl)-2,4-dimethoxy-5-chloroanilide Naphthol AS p-Anisidine Terbinafine Hydrochloride Phenylhydrazine
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