PRODUCT
3-Hydroxy-2-naphthoic acid CAS 92-70-6
CAS:92-70-6| C11H8O3 |MW：188.18 | EINECS NO：202-180-8
Payment: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Transporta: Ocean, Land,Air, DHL，TNT
Port: Shanghai Port, Qingdao Port
Description
3-Hydroxy-2-naphthoic acid, Also known as 3-hydroxy-2-naphthoic acid or 2,3-acid, it is an important naphthalene based organic intermediate. Visually, pure 3-Hydroxy-2-naphthoic acid typically appears as white to light yellow crystalline powder or needle shaped crystals. Purity has a significant impact on color. Industrial products can appear grayish-white or light pink due to trace amounts of impurities. 3-Hydroxy-2-naphthoic acid has a clear melting point of approximately 222-224 deg C, which is due to the formation of intramolecular and intermolecular hydrogen bonds. It is easy for the acid to decompose and sublime under normal pressure. Therefore, there is no boiling point when measured at normal pressure. In terms of solubility, 3-Hydroxy-2-naphthoic acid is slightly soluble in cold water, but its solubility significantly increases in hot water. It is soluble in many organic solvents, including ethanol, chloroform and benzene. The most characteristic dissolution behavior of 3-Hydroxy-2-naphthoic acid is its solubility in alkaline aqueous solutions, resulting in the formation of corresponding naphthol salts, which is determined by the weak acidity of its phenolic hydroxyl groups; Meanwhile, its carboxyl group also makes it soluble in sodium bicarbonate solution and releases carbon dioxide, which can be used for identification and separation. The physical properties of 3-Hydroxy-2-naphthoic acid include: no significant odor or a weak characteristic sour taste, and a density greater than that of water. The presence of carboxyl or phenolic groups in their molecular structures can lead to strong intramolecular hydrogen bonds. These have a significant impact on the crystal structure, melting temperature, solubility and infrared spectrum characteristics. The physical properties of 3-Hydroxy-2-naphthoic acid are dominated by its unique bifunctional structure, which directly affects the process conditions for its synthesis, purification, and application as a dye or pigment intermediate.
Product Images & Packaging
Product Parameters
| 3-Hydroxy-2-naphthoic acid Chemical Properties |
| Melting point | 218-221 °C(lit.) |
| Boiling point | 283.17°C (rough estimate) |
| density | 1.43 g/cm3 (23℃) |
| refractive index | 1.7160 (estimate) |
| Fp | >150°C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 0.072g/l practically insoluble |
| pka | 3.02±0.30(Predicted) |
| form | Fine Crystalline Powder |
| color | Yellow to beige-brown |
| biological source | human blood |
| Water Solubility | PRACTICALLY INSOLUBLE |
| λmax | 395nm(H2O (pH 3.5))(lit.) |
| Merck | 14,4835 |
| BRN | 744100 |
| CAS DataBase Reference | 92-70-6(CAS DataBase Reference) |
The application of 3-Hydroxy-2-naphthoic acid
3-Hydroxy-2-naphthoic acid is a crucial core intermediate in modern fine chemicals, especially in the organic pigment and dye industries. Its unique reactivity is due to the presence of both carboxyl and polyphenolic hydroxyl groupings in its molecular structure. It can create complex macromolecular systems of chromophores through coupling, condensation, acylation and other reactions.
1. Pigment industry – the cornerstone and core. 3-Hydroxy-2-naphthoic acid is the most important and classic application of its kind, with a dominant share in its market. Azo pigments : 3-Hydroxy-2-naphthoic acid is the key precursor to all products in the “phenolic AS” range. It is first condensed with aromatic amines in specific conditions, resulting in a series different structured phenolic AS compound.
These colorants AS do not serve as pigments, but instead act as coupling components. They undergo coupling reactions on fibers, or during production, to generate insoluble azo colors with higher molecular weights, and more complex structure. This pigment is used to color high-end inks and coatings. It also has excellent heat resistance and resistance to migration. High-performance organics pigments: These pigments are important intermediates in the synthesis of certain heterocyclic pigments with superior durability and performance.
2. Dye Industry Ice Dyeing Dye: The AS series colorants are used in ice dyeing dyes to achieve bright colors with excellent fastness, such as red or blue. Functional dye intermediates are intermediates that are used to modify the color and properties of acidic dyes, dispersed dyes, and other dyes.
3. The structure of 3-Hydroxy-2-naphthoic acid, an intermediate in pharmaceuticals and pesticides, can serve as a scaffold for constructing bioactive molecules. Drug Synthesis: It’s the intermediate used to synthesize certain non-steroidal antiinflammatory drugs, antibiotics and other drug molecules. Its derivatives, for example, can be used in the synthesis of related compounds like naproxen. Agricultural chemicals are used as intermediates or starting materials for the synthesis and introduction of active groups in certain herbicides.
3-Hydroxy-2-naphthoic acid 's Procurement Guide
Procurement Guidelines
1. Sample Policy
We can provide a 2-3g free trial package (shipping fee required)
2. Batch procurement
Packaging: 25kg/bag; 220kg/barrel; Special packaging according to your needs
MOQ：1kg
3. Customized services
Concentration customization (90% -99%)
Paeonol’s outsourcing services
FAQ
Yes, we have our own factory called ” ZhiShang Industry Group “
Yes, we have GMP certificate for some products, and we can provide DMF as well.
-Quality you require, eg. Assay, Purity, or single impurity
-Quantity you need
-Standard you want, such as USP, EP, JP etc.
Escrow and T/T in advance are highly recommended. We can accept Western Union, Money Gram and Paypal as well.
For sample(less than 1kg), in about 3 working days after payment; for larger orders (more than 1kg), in about 7 working days after payment.
For samples, we will send by TNT/DHL/FEDEX/UPS express, usually it takes about 3-5 day.
Related References
Manufacturer of 3-Hydroxy-2-naphthoic acid
Achievements
Advantage
Service
FAQ
Advice on Shipping
Achievements
Zhishang Bio is based in Shandong, serves the whole country, faces the world, and is determined to become an excellent supplier and service provider in the chemical industry.
As a top manufacturer of cosmetic raw materials, disinfectants, flavors and fragrances in China, we are committed to producing high-quality products and have won high praise from customers all over the world.
In the next 10 years or even longer, Zhishang Bio will always adhere to the tenet of quality first and reputation first, and devote itself to providing customers with thoughtful and perfect services.
As a professional 3-Hydroxy-2-naphthoic acid manufacturer, Zhi shang Bio has served more than 6,000 customers around the world. Because of our high-quality products and professional services, we have won high praise from most of our customers.
Advantage
Zhishang Bio is a professional enterprise engaged in the research and development, production, and sales of chemical raw materials. It has a strong supply chain system and strict quality control standards to ensure the provision of high-quality products with high purity and stability to customers.
Zhishang Bio’s core strength is its independent research and design capabilities. It has advanced production equipment, testing laboratories and can customize chemical raw materials to meet the market demands. This includes pharmaceuticals, electronic, coatings and agricultural applications.
Zhishang Bio’s supply chain management is based on long-term relationships with domestic and international suppliers of high quality to guarantee a stable supply, optimize logistic systems, and achieve efficient distribution. This helps reduce the cost of customer purchases.
We adhere to international environmental standards and we also adhere to the concept that environmental protection and safety production are important. All production processes must comply with these standards in order to guarantee that our products will be green and sustainable.
With a professional technical team and comprehensive after-sales service, Zhishang Bio can provide customers with precise technical support, solve application problems, and help customers enhance product competitiveness.
We are always customer-oriented and committed to becoming a trusted chemical raw material partner.
Service
Zhishang Biography is dedicated to using clients extensive and expert service, including chemical raw material. The customers will certainly receive hassle-free, efficient and one-stop options.
1. Custom-made Supply Solutions
Zhishang Bio provides tailored services for clients in the chemical basic material sector, including special bit dimension, solvent residue control, stability optimizations and more. Clients can personalize their services to satisfy details requirements in industries such as drugs, electronic devices, and finishings.
2. Strict quality assurance
Zhishang Bio utilizes advanced screening equipment and stringent quality examination procedures, in addition to various other files, to guarantee that every batch of products is certified with international criteria such ISO GMP, REACH, and so on. Customers are also given with full quality records and conformity documents.
The supply chain is secure
Zhishang Bio has actually established lasting calculated collaborations with worldwide makers of top notch raw materials to make certain a secure supply, maximize the storage facility and logistics system, and assistance both small-scale examinations and large orders. It adjusted to the changing requirements of clients by responding flexibly to these changes.
4. Technical support
Zhishang Bio’s technical group can offer suggestions on product applications, formula optimization and analysis of industry patterns to aid clients fix technological troubles during production and boost item efficiency.
5. Efficient after-sales service
Zhishang Bio provides complete monitoring, reacts to client requests and delivers promptly. This will certainly make certain customer complete satisfaction.
Zhishang Biography intends to help consumers expand their service by providing the very best solutions and chemical resources.
FAQ
DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
Shandong Look Chemical
Advice on Shipping
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
Zhishang Bio company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.
And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.
The company integrates research and development, production, and trade, with a modern production base, advanced testing equipment, and an experienced technical team to ensure that products reach industry-leading levels in purity, stability, and environmental friendliness.
