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Naphthol AS

Product Name
Naphthol AS
CAS No.
92-77-3
Chemical Name
Naphthol AS
Synonyms
NAPTHOL AS;2-Hydroxy-3-naphthanilide;3-hy;azotola;CI 37505;celcotrf;diatholas;naftolomm;naphtolas;Azoic CC2
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)
storage temp. 
Refrigerator
solubility 
Insoluble in water; sparingly soluble in ethanol
Colour Index 
37505
form 
Powder
pka
9.70(at 25℃)
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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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P272Contaminated work clothing should not be allowed out of the workplace.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

TCI Chemical
Product number
H0313
Product name
3-Hydroxy-2-naphthanilide
Purity
>97.0%(HPLC)(T)
Packaging
25g
Price
$24
Updated
2024/03/01
TCI Chemical
Product number
H0313
Product name
3-Hydroxy-2-naphthanilide
Purity
>97.0%(HPLC)(T)
Packaging
500g
Price
$85
Updated
2024/03/01
TRC
Product number
N497060
Product name
NaphtolAS
Packaging
50g
Price
$140
Updated
2021/12/16
Usbiological
Product number
460573
Product name
Naphtol AS
Packaging
5g
Price
$319
Updated
2021/12/16
Biosynth Carbosynth
Product number
FA41329
Product name
C.I.Azoic Coupling Component 2
Packaging
1kg
Price
$320
Updated
2021/12/16
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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

Uses

Naphtol AS was used as off-the-shelf color-based anion sensors in organic solvents.

Preparation

aniline and 3-Hydroxy-2-naphthoic acid?condensation.

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.]

Properties and Applications

rice or small red powder, melting point of 243 ~ 244 ℃, more sensitive to the air. In sodium hydroxide solution for yellow in liquid, insoluble in water and sodium carbonate solution, slightly soluble in ethanol, soluble in hot the difficulties. This product is widely used in the cotton fabric dyeing and printing. Dyeing cotton, cotton affinity is low, medium coupled ability. Can also be used for cotton yarn, polyester/cotton, PVA, viscose, silk and vinegar fiber dyeing, also can undertake direct printing, and reactive dye printing and cotton fabrics with the dye printing, discharge printing, the reactive dyes color printing and dyeing, and used to make quick pigment, fast amine element, element and organic pigment fast sulfonylurea medications.

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Naphthol AS Suppliers

Henan yingchuang
Tel
0370-3678455 16650708709
Fax
qq:778660296
Email
hnyingchuang@163.com
Country
China
ProdList
3965
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40241
Advantage
62
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15848
Advantage
69
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24539
Advantage
81
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44751
Advantage
61
Shanghai Longsheng chemical Co.,Ltd.
Tel
021-58099652-8005 13585536065
Fax
021-58099609
Email
bin.wu@shlschem.com
Country
China
ProdList
9816
Advantage
59
Shandong Xiya Chemical Co., Ltd
Tel
4009903999 13355009207
Fax
0539-6365991
Email
3007715519@qq.com
Country
China
ProdList
18736
Advantage
57
BEST-REAGENT
Tel
400-1166-196 18981987031
Fax
028-84555506 800101999
Email
cdhxsj@163.com
Country
China
ProdList
11726
Advantage
57
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com
Country
China
ProdList
14443
Advantage
57
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View Lastest Price from Naphthol AS manufacturers

Hebei Yibangte Import and Export Co. , Ltd.
Product
Naphthol AS 92-77-3
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
50000kg
Release date
2023-08-03
Hebei Mojin Biotechnology Co., Ltd
Product
Naphthol 92-77-3
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-07-04
Hebei Guanlang Biotechnology Co., Ltd.
Product
Naphthol AS 92-77-3
Price
US $100.00/KG
Min. Order
1KG
Purity
99%min
Supply Ability
200TON
Release date
2020-12-08

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