5-Hydroxyisophthalic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 618-83-7 |
| Product name | 5-Hydroxyisophthalic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 5-Hydroxyisophthalic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 5-Hydroxyisophthalic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 5-Hydroxyisophthalic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Production of pharmaceutical intermediates | Catalytic oxidation of p-xylene or its derivatives |
| Materials Science | Manufacture of specialty polymers and resins | Copolymerization with other monomers to form polymeric materials |
| Dyes and Pigments | Synthesis of dyes and pigments | Used in the production of dyes and pigments with specific spectral properties |
| Organic Synthesis | Use as an organic synthesis reagent | Employed as a feedstock or intermediate in organic synthesis reactions |
Manufacturing Quality Control of 5-Hydroxyisophthalic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Purity Determination | High-Performance Liquid Chromatography (HPLC) | A reverse-phase C18 chromatographic column is used with a phosphate buffer-organic solvent mobile phase. Quantitative analysis of the main component purity is performed using a UV detector (e.g., at 254 nm). This method is sensitive and accurate, suitable for raw material quality control. |
| Related Substances (Impurities) | HPLC with Gradient Elution | Main peak and potential impurity peaks are separated using a gradient elution program. The content of each impurity is calculated based on relative retention time and peak area, in accordance with ICH Q3A guideline requirements. |
| Loss on Drying | Oven Drying Method (or Thermogravimetric Analysis, TGA) | The sample is dried at a specified temperature (e.g., 105°C) until constant weight is achieved, and the percentage of mass loss is calculated to evaluate moisture and volatile substance content. |
| Residue on Ignition | High-Temperature Ashing Method | The sample is incinerated at high temperature (700–800°C), and the mass of the residual inorganic matter is measured to control inorganic impurities or catalyst residues. |
| Heavy Metals | Heavy Metal Test Method from the Chinese Pharmacopoeia | The thiocyanate method or ICP-MS is used to perform colorimetric comparison under acidic conditions or directly measure total levels of lead, cadmium, mercury, arsenic, etc., ensuring compliance with limit standards. |
| Residual Solvents | Headspace Gas Chromatography (HS-GC) | Head-space sampling technology is employed to separate and detect residual organic solvents (e.g., methanol, ethanol, DMF) by gas chromatography with FID or MS detection, in line with ICH Q3C requirements. |
| Structural Confirmation | Infrared Spectroscopy (IR), Nuclear Magnetic Resonance (NMR) | IR is used for functional group identification; ¹H/¹³C NMR provides information about hydrogen and carbon environments, while mass spectrometry (MS) confirms molecular weight. These methods collectively verify compound structural consistency. |
| pH Value | pH Meter Method | A solution of specific concentration (e.g., 1% w/v) is prepared, and pH is directly measured using a calibrated pH meter to reflect acidity/basicity and possible acidic/basic impurities. |
| Melting Point | Capillary Melting Point Method | A digital melting point apparatus is used to determine the temperature range from initial melting to complete melting as a physical constant indicator, assisting in assessing substance purity and crystal form consistency. |
| Appearance and Color | Visual Color Comparison Method | The color of the solid (should be white to off-white powder) is observed against a white background. If necessary, it is compared with standard color solutions to control colored impurities. |
Technical Specifications of 5-Hydroxyisophthalic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.5% (HPLC) |
| Melting Point | 265-270 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | 480-500 mg KOH/g |
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 5-Hydroxyisophthalic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 5-Hydroxyisophthalic acid
Packaging of 5-Hydroxyisophthalic acid
Industrial 5-Hydroxyisophthalic 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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