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Naphthol AS-D

Product Name
Naphthol AS-D
CAS No.
135-61-5
Chemical Name
Naphthol AS-D
Synonyms
Naphta;CI 37520;Naphthoi;Azotol OT;Diathol D;Ultrazol D;Celcot RTO;Naftolo MD;NaphtazolD;Azoground D
CBNumber
CB9298150
Molecular Formula
C18H15NO2
Formula Weight
277.32
MOL File
135-61-5.mol
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Naphthol AS-D Property

Melting point:
196-198 °C
Boiling point:
399.7±35.0 °C(Predicted)
Density 
1.277±0.06 g/cm3(Predicted)
pka
8.73±0.40(Predicted)
form 
powder to crystal
Colour Index 
37520
color 
White to Gray to Brown
NIST Chemistry Reference
2-Naphthalenecarboxamide, 3-hydroxy-n-(2-methylphenyl)-(135-61-5)
EPA Substance Registry System
2-Naphthalenecarboxamide, 3-hydroxy-N-(2-methylphenyl)- (135-61-5)
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Safety

Hazard Codes 
N
Risk Statements 
50/53
Safety Statements 
60-61
RIDADR 
UN 3077 9/PG 3
WGK Germany 
2
HS Code 
2924.29.7790
HazardClass 
9
PackingGroup 
III
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H317May cause an allergic skin reaction

H411Toxic to aquatic life with long lasting effects

Precautionary statements

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

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

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

P321Specific treatment (see … on this label).

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
S351008
Product name
3-HYDROXY-2'-METHYL-2-NAPHTHANILIDE
Purity
Aldrich<sup>CPR</sup>
Packaging
1 unit
Price
$113
Updated
2025/07/31
Sigma-Aldrich
Product number
S351008
Product name
3-HYDROXY-2'-METHYL-2-NAPHTHANILIDE
Purity
Aldrich
Packaging
1g
Price
$110
Updated
2024/03/01
TCI Chemical
Product number
H0315
Product name
3-Hydroxy-2'-methyl-2-naphthanilide
Purity
>97.0%(HPLC)
Packaging
25g
Price
$71
Updated
2025/07/31
TCI Chemical
Product number
H0315
Product name
3-Hydroxy-2'-methyl-2-naphthanilide
Purity
>97.0%(HPLC)
Packaging
500g
Price
$903
Updated
2025/07/31
TRC
Product number
H949843
Product name
3-Hydroxy-2''-methyl-2-naphthanilide
Packaging
5g
Price
$65
Updated
2021/12/16
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Naphthol AS-D Chemical Properties,Usage,Production

Chemical Properties

Beige powder. Soluble in solvent naphtha. Insoluble in water and soda ash solution.

Preparation

O-Methylaniline and 3-Hydroxy-2-naphthoic acid condensation.

Flammability and Explosibility

Non flammable

Purification Methods

Purify it by recrystallisation from xylene. This gives yellow-green fluorescent solutions at pH 8.2-9.5. [IR: Schnopper et al. Anal Chem 31 1542 1959.] The naphthol AS-D acetate is obtained with AcCl, m 168-169o, and with chloroacetyl chloride naphthol AS-D-chloroacetate is obtained [Moloney et al. J Histochem Cytochem 8 200 1960, Burstone Arch Pathology 63 164 1957]. [Beilstein 12 H 505.]

Properties and Applications

yellowish powder, melting point for 195 ~ 196 ℃. Insoluble in water solution and sodium carbonate, soluble in naphtha. In sodium hydroxide solution for yellow. Sensitive to air. Mainly used for cotton yarns, cotton fabric, PVA, viscose, silk and vinegar fiber dyeing, also can be used for direct printing, the cotton print and dye discharge printing, and can be used as a quick pigment and organic pigments intermediate. The affinity of cotton is low, medium coupled ability.

Naphthol AS-D Preparation Products And Raw materials

Raw materials

Preparation Products

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Naphthol AS-D Suppliers

Synthesia, a.s.
Tel
--
Fax
--
Email
synthesia@synthesia.cz
Country
Czech Republic
ProdList
264
Advantage
77
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View Lastest Price from Naphthol AS-D manufacturers

HANGZHOU HAILAN CHEMICAL CO.,LTD.
Product
Naphthol AS-D 135-61-5
Price
US $0.00/kg
Min. Order
1kg
Purity
99%min
Supply Ability
20tons
Release date
2025-09-15
Shaanxi Dideu New Materials Co. Ltd
Product
Naphthol AS-D 135-61-5
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98.0%
Supply Ability
10000KGS
Release date
2025-05-21
Hebei Chuanghai Biotechnology Co., Ltd
Product
Naphthol AS-D 135-61-5
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-25

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