1,4-Dihydroxy-2-naphthoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 31519-22-9 |
| Product name | 1,4-Dihydroxy-2-naphthoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeFood GradeCosmetic 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 1,4-Dihydroxy-2-naphthoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1,4-Dihydroxy-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 1,4-Dihydroxy-2-naphthoic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthetic intermediate for vitamin K2 (MK-4), used in R&D of drugs for osteoporosis and cardiovascular diseases | Preparation of menaquinone derivatives via organic synthesis steps including alkylation and esterification |
| Food Additives | Precursor for nutritional fortification, enabling vitamin K2 supplementation in functional foods | Conversion into bioavailable forms via microbial fermentation or chemical synthesis |
| Cosmetics | Antioxidant active ingredient to enhance skin barrier function and anti-aging effects | Formulated with other lipophilic ingredients and processed into skincare products via emulsification or microencapsulation |
| Biotechnology | Substrate for microbial fermentation to produce high-purity vitamin K2 (MK-7) | Directed biotransformation using strains such as Bacillus subtilis |
Manufacturing Quality Control of 1,4-Dihydroxy-2-naphthoic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV; identification based on retention time relative to reference standards or threshold reporting. |
| Loss on Drying | Gravimetric Method | Measurement of mass loss after drying under controlled temperature and vacuum, reflecting volatile content including residual solvents and moisture. |
| Residue on Ignition | Sulfated Ash Method | Determination of inorganic residue after high-temperature ignition following sulfuric acid treatment, indicating inorganic impurities. |
| Heavy Metals | AAS (Lead, Cadmium, Mercury, Arsenic) | Quantification of specified heavy metals by atomic absorption spectroscopy after acid digestion and matrix matching. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using a silver indicator electrode; endpoint detected by potential change due to AgCl precipitation. |
| Sulfate Content | Gravimetric Method | Precipitation as barium sulfate followed by filtration, drying, and weighing to determine sulfate impurity level. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Direct measurement using calibrated pH electrode in a saturated aqueous suspension at 25 C. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range over which solid transitions to liquid, indicating purity and identity. |
| Water Content | Karl Fischer Titration | Volumetric titration with Karl Fischer reagent to quantify water based on stoichiometric iodine-sulfur dioxide reaction. |
| Organic Volatile Impurities | GC-FID | Detection and quantification of residual solvents using gas chromatography with flame ionization detection and internal standard calibration. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation of plane-polarized light in solution to confirm chiral purity and identity, if applicable. |
Technical Specifications of 1,4-Dihydroxy-2-naphthoic acid
| Test Item | Specification |
|---|---|
| Appearance | Pale-purple solid |
| Purity | >=98.0% (by LC-MS) |
| Melting Point | 235–239 °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 1,4-Dihydroxy-2-naphthoic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1,4-Dihydroxy-2-naphthoic acid
Safety Information of 1,4-Dihydroxy-2-naphthoic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 1,4-Dihydroxy-2-naphthoic acid
Industrial 1,4-Dihydroxy-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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