Cas no 137-52-0 (Naphthol-AS-CA)

Naphthol-AS-CA is a specialized azoic coupling component widely used in the dye and pigment industry. It is particularly valued for its ability to form stable, vivid azo dyes when combined with diazonium salts, offering excellent lightfastness and color strength. This compound is chemically known as 3-hydroxy-2-naphthoic acid (2-methylphenyl)amide and is commonly employed in the synthesis of high-performance pigments for textiles, plastics, and coatings. Its molecular structure ensures strong adhesion to substrates and resistance to fading under UV exposure. Naphthol-AS-CA is favored for its consistency, purity, and compatibility with various industrial processes, making it a reliable choice for demanding applications.

Naphthol-AS-CA structure

Product Name:Naphthol-AS-CA

CAS No:137-52-0

MF:C₁₈H₁₄ClNO₃

MW:327.761663913727

MDL:MFCD00051171

CID:36390

PubChem ID:67305

Update Time:2025-05-25

Naphthol-AS-CA Chemical and Physical Properties

Names and Identifiers

- N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide
- Naphthol AS-CA
- 5-Boc-octahydro-pyrrolo[3,4-C]pyridine
- N-(5-chloro-2-methoxyphenyl)-3-hydroxynaphthalene-2-carboxamide
- Naphtanilide EL
- 3-Hydroxy-[2]naphthoesaeure-(5-chlor-2-methoxy-anilid)
- 3-hydroxy-[2]naphthoic acid-(5-chloro-2-methoxy-anilide)
- 3-Oxy-naphthoesaeure-(2)-(5-chlor-2-methoxy-anilid)
- 5'-chloro-3-hydroxy-2'-methoxy-2-naphthanilide
- Acna Naphthol CA
- Azotol KHA
- Azotol XA
- Cibanaphthol RCA
- Naphtazol EL
- Naphthanilid EL
- Naphthazol NEL
- Naphthol-NEL
- Naphtol AS-CA
- Azoic Coupling Component 34
- C.I.37531
- Naftol AS-CL
- Azoic C.C.41
- NAPHTOL AS-LC
- NAPTHOL AS-LC
- NAPHTHOL AS-CL
- Anarthol AS-CL
- SCHEMBL1025899
- FT-0648819
- 2-Naphth-o-anisidide, 5'-chloro-3-hydroxy-
- C.I. 37531
- NSC-50685
- NS00020743
- n-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthalenecarboxylic amide
- UNII-ZN9R2FDM57
- EINECS 205-300-7
- Naphthol AS-RC Supra
- C.I. Azoic Coupling Component 34
- NSC50685
- Azoic coupling component 41
- n-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthalenecarboxamide
- NSC 50685
- 5'-Chloro-3-hydroxy-2-naphth-o-anisidide
- Naphthol NEL
- N-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthalenecarboxyli c amide
- NAPHTHOLAS-CA
- AKOS015919999
- Amanil Naphthol AS-EL
- Naphthol AS-EL
- Naphtol AS-RC
- DS-1066
- Naphtol AS-CALL
- 4-Aminodiphenyl amine sulfate
- 137-52-0
- C.I. Azoic Coupling Component 41
- MFCD00051171
- CS-W000841
- WWXPGBMLOCYWLD-UHFFFAOYSA-N
- 2-Naphthalenecarboxamide, N-(5-chloro-2-methoxyphenyl)-3-hydroxy-
- DTXSID9059676
- W-109493
- Hiltonaphthol AS-EL
- ZN9R2FDM57
- DB-063205
- Naphthol-AS-CA
- MDL： MFCD00051171
- Inchi： 1S/C18H14ClNO3/c1-23-17-7-6-13(19)10-15(17)20-18(22)14-8-11-4-2-3-5-12(11)9-16(14)21/h2-10,21H,1H3,(H,20,22)
- InChI Key： WWXPGBMLOCYWLD-UHFFFAOYSA-N
- SMILES： ClC1C=CC(=C(C=1)NC(C1=C(C=C2C=CC=CC2=C1)O)=O)OC

Computed Properties

Exact Mass: 327.06600
Monoisotopic Mass: 327.066
Isotope Atom Count: 0
Hydrogen Bond Donor Count: 2
Hydrogen Bond Acceptor Count: 4
Heavy Atom Count: 23
Rotatable Bond Count: 4
Complexity: 419
Covalently-Bonded Unit Count: 1
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count : 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Surface Charge: 0
Tautomer Count: 9
XLogP3: 4.8
Topological Polar Surface Area: 58.6A^2

Experimental Properties

Color/Form: Light gray white uniform powder
Density: 1.384
Boiling Point: 446.3℃ at 760 mmHg
Flash Point: 223.7 °C
Refractive Index: 1.705
PSA: 58.56000
LogP: 4.53270
Solubility: Insoluble in water and ethanol, soluble in lye

Naphthol-AS-CA Security Information

Signal Word：Warning
Hazard Statement： H315; H319; H335
Warning Statement： P261; P264; P271; P280; P302+P352; P304+P340; P305+P351+P338; P312; P321; P332+P313; P337+P313; P362; P403+P233; P405; P501
WGK Germany：2
Safety Instruction： S26; S36; S24/25
RTECS：LT7031100
Hazardous Material Identification：
Storage Condition：Store at room temperature
Risk Phrases：R36/37/38; R52/53

Naphthol-AS-CA Customs Data

HS CODE：29321900
Customs Data：

China Customs Code:
2924299090

Overview:

2924299090. Other cyclic amides(Including cyclic carbamates)(Including their derivatives as well as their salts). VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:30.0%

Declaration elements:

Product Name, component content, use to, packing

Summary:

2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Naphthol-AS-CA Pricemore >>

Related Categories	No.	Product Name	Cas No.	Purity	Specification	Price	update time
TRC	N367983-50mg	Naphthol-AS-CA	137-52-0		50mg	$ 50.00	2022-06-03
TRC	N367983-100mg	Naphthol-AS-CA	137-52-0		100mg	$ 65.00	2022-06-03
TRC	N367983-500mg	Naphthol-AS-CA	137-52-0		500mg	$ 80.00	2022-06-03
SHANG HAI JI ZHI SHENG HUA Technology Co., Ltd.	N44050-1g	N-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		1g	￥158.0	2021-09-08
SHANG HAI JI ZHI SHENG HUA Technology Co., Ltd.	N44050-250mg	N-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		250mg	￥98.0	2021-09-08
Alichem	A019111228-100g	N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0	95%	100g	998.00 USD	2021-06-17
abcr	AB437705-1 g	N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		1g	€61.80	2023-04-23
abcr	AB437705-5 g	N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		5g	€89.40	2023-04-23
abcr	AB437705-25 g	N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		25g	€170.40	2023-04-23
abcr	AB437705-100 g	N-(5-Chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide	137-52-0		100g	€419.80	2023-04-23

Naphthol-AS-CA Suppliers

Amadis Chemical Company Limited

Gold Member

Audited Supplier

(CAS:137-52-0)Naphthol-AS-CA

Order Number:A807270

Stock Status:in Stock

Quantity:25g

Purity:99%

Pricing Information Last Updated:Friday, 30 August 2024 04:46

Price ($):298.0

Email:[email protected]

Product Official Link

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Additional information on Naphthol-AS-CA

Comprehensive Guide to Naphthol-AS-CA (CAS No. 137-52-0): Properties, Applications, and Industry Insights

Naphthol-AS-CA (CAS No. 137-52-0) is a specialized organic compound widely recognized for its role in dye synthesis and industrial applications. This azo coupling component belongs to the Naphthol AS series, a group of chemicals prized for their ability to form vivid, lightfast dyes. With the growing demand for sustainable and high-performance colorants, Naphthol-AS-CA has garnered significant attention in sectors like textiles, inks, and coatings.

The molecular structure of Naphthol-AS-CA features a naphthalene backbone with a hydroxyl group and a carboxamide substituent, enabling versatile reactivity. Its CAS registry number 137-52-0 ensures precise identification in global chemical databases. Recent trends show increased searches for "eco-friendly dye intermediates" and "Naphthol-AS-CA solubility," reflecting industry shifts toward greener chemistry. Researchers emphasize its compatibility with water-based systems, addressing concerns about volatile organic compounds (VOCs).

In textile applications, Naphthol-AS-CA excels as a cotton dyeing agent, producing hues with exceptional wash-fastness. A 2023 market analysis highlighted a 12% annual growth in demand for Naphthol AS derivatives, driven by sustainable fashion movements. Common user queries like "how to improve Naphthol-AS-CA color yield" or "Naphthol-AS-CA vs. traditional dyes" underscore its technical relevance. Optimized dye baths with pH 6–8 yield optimal results, while advanced fixation techniques reduce wastewater contamination.

Beyond textiles, Naphthol-AS-CA serves as a pigment precursor in artist-grade paints and printing inks. Its thermal stability (decomposition point >250°C) makes it suitable for high-temperature processes. Manufacturers increasingly adopt Naphthol-AS-CA in UV-resistant coatings, responding to searches for "lightfast organic pigments." Recent patents describe novel formulations combining this compound with bio-based binders, aligning with circular economy principles.

Quality control of Naphthol-AS-CA involves HPLC purity verification (>98%) and spectrophotometric analysis. Regulatory compliance with REACH and EPA standards ensures global market access. Notably, the compound’s low acute toxicity (LD50 >2000 mg/kg) positions it favorably compared to older dye technologies. FAQs such as "Naphthol-AS-CA storage conditions" are addressed by recommending airtight containers away from strong oxidizers.

Emerging research explores Naphthol-AS-CA in functional materials, including liquid crystal displays and organic semiconductors. Its electron-donating properties show promise in optoelectronic devices, a topic gaining traction in academic searches. Collaborative studies between dye chemists and material scientists aim to expand its utility beyond traditional colorant roles.

For procurement specialists, understanding Naphthol-AS-CA pricing trends is crucial. Market fluctuations often correlate with 2-hydroxy-3-naphthoic acid (precursor) availability. Bulk purchasers should monitor Asian production capacities, where 80% of global supply originates. Verified suppliers provide Naphthol-AS-CA technical data sheets with batch-specific spectrophotometric curves.

Environmental considerations dominate contemporary discussions about Naphthol-AS-CA. Advanced oxidation processes (AOPs) effectively degrade it in wastewater, answering queries about "dye intermediate biodegradability." Lifecycle assessments confirm its advantages over heavy metal-based alternatives, particularly in reducing aquatic toxicity.

In conclusion, Naphthol-AS-CA (CAS 137-52-0) remains indispensable for modern coloration needs. Its balance of performance, regulatory compliance, and innovation potential ensures continued relevance across industries. As sustainable chemistry evolves, this compound will likely play a pivotal role in developing next-generation color solutions.

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