3-Hydroxy-2-naphthoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 92-70-6 |
| Product name | 3-Hydroxy-2-naphthoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for 3-Hydroxy-2-naphthoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-Hydroxy-2-naphthoic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-Hydroxy-2-naphthoic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for synthesizing azo dyes and acid dyes, used in producing naphthol-based dyes (e.g., Acid Blue 62, Acid Black 1) | Diazotization-coupling reaction; coupling with aromatic amines in a weakly acidic medium |
| Pharmaceutical Industry | Key intermediate for synthesizing antimalarial drugs chloroquine and hydroxychloroquine | Multi-step synthesis involving acid chloride formation, aminolysis, and cyclization to construct the quinoline ring |
| Pesticide Industry | Intermediate for synthesizing insecticides and plant growth regulators (e.g., certain naphthoic acid derivative fungicides) | Introduction of active functional groups via organic synthesis reactions including esterification, halogenation, and substitution |
| Organic Synthesis | Used to prepare fluorescent whitening agents, metal-complex indicators, and functional polymer monomers | Sulfonation, acetylation, salt formation, or condensation with aldehydes to prepare Schiff base ligands |
Manufacturing Quality Control of 3-Hydroxy-2-naphthoic acid
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and visible impurities under natural or standard illumination. Typically appears as a white to pale yellow crystalline powder. |
| Melting Point | Melting Point Determination (Capillary Method) | Determine the melting temperature range using a melting point apparatus. Pure substances exhibit a sharp melting point, which can be used to assess purity. The typical melting point range is approximately 195–198°C (literature values may vary slightly). |
| Content Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with UV detection (e.g., 254 nm), employing methanol-water or buffer solution as mobile phase for gradient or isocratic elution to quantify the main component. Purity is calculated using external standard or internal standard methods. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Same as above; HPLC is used to separate and detect potential synthesis intermediates, by-products, or degradation products, evaluating total impurity levels and individual impurity limits. |
| Drying Loss | Thermogravimetric Analysis (TGA) or Oven Drying Method | Dry the sample at a specified temperature (e.g., 105°C) for a set duration (e.g., 2–4 hours), then measure mass loss to determine moisture and volatile component content. |
| Residue on Ignition (Sulfated Ash) | Sulfated Ash Method | Treat the sample with sulfuric acid followed by high-temperature incineration, then weigh the residual inorganic matter. Used to assess non-volatile inorganic impurity content. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, determine the levels of heavy metals such as lead, arsenic, cadmium, and mercury to ensure compliance with pharmacopoeial or safety standards. |
| Chlorides | Ion Chromatography (IC) or Turbidimetry | Determine chloride ion impurity levels, commonly used to assess raw material or process-related residues. |
| Solubility | Solubility Test | Observe the dissolution behavior of the sample in different solvents such as water, ethanol, methanol, and alkaline solutions to assist in characterizing physicochemical properties and ensuring consistency. |
| Structural Confirmation | Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS) | FTIR identifies characteristic functional group absorption peaks; ¹H-NMR and ¹³C-NMR confirm molecular structure; MS provides molecular ion peak and fragmentation information for identity verification. |
Technical Specifications of 3-Hydroxy-2-naphthoic acid
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 225-229°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 3-Hydroxy-2-naphthoic acid
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| Lot/Batch Number | *Required fields | |
NMR Spectra of 3-Hydroxy-2-naphthoic acid
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Industrial 3-Hydroxy-2-naphthoic acid Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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