3-HYDROXYPHTHALIC ANHYDRIDE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 37418-88-5 |
| Product name | 3-HYDROXYPHTHALIC ANHYDRIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeElectronic Grade |
| Packaging | 25KG/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-HYDROXYPHTHALIC ANHYDRIDE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-HYDROXYPHTHALIC ANHYDRIDE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-HYDROXYPHTHALIC ANHYDRIDE
| Industry | Application | Process |
|---|---|---|
| Paint & Coatings Industry | Used as an epoxy resin curing agent | Reacts with epoxy resins to form a crosslinked network, enhancing chemical resistance and mechanical properties of coatings |
| Plastics Industry | Production of high-performance plastics | Serves as a raw material in the synthesis of engineering plastics such as polyimides, participating in polymerization reactions |
| Pharmaceutical Synthesis | Intermediate | Reacts with other compounds under specific conditions to generate target drug molecules or their precursors |
| Fiber Manufacturing | Production of specialty fibers | Involved in the preparation of fiber materials with specialized properties (e.g., high-temperature resistance) |
| Electronics Industry | Manufacture of electronic chemicals | Used in producing certain types of insulating materials, adhesives, and other formulations meeting specialized requirements for electronic components |
Manufacturing Quality Control of 3-HYDROXYPHTHALIC ANHYDRIDE
| Test Item | Common Test Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state, and presence of visible impurities under natural or standard lighting conditions. Suitable for assessing solid powders or crystalline forms. |
| Content/Purity | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column and a UV detector (e.g., 254 nm), with gradient elution using water-organic solvents (e.g., methanol or acetonitrile) for quantitative analysis of the main component and purity evaluation. |
| Melting Point | Melting Point Determination (Capillary Method) | Determine the temperature range from the onset of melting to complete liquefaction using a melting point apparatus. Used for substance identification and purity assessment. Pure substances typically exhibit sharp melting points. |
| Moisture Content | Karl Fischer Titration | Determines water content in the sample using Karl Fischer reagent. This method includes coulometric titration (for trace moisture) and volumetric titration (for higher moisture levels), providing accurate measurement of residual moisture. |
| Residual Solvents | Gas Chromatography (GC) | According to ICH guidelines, residual organic solvents (e.g., methanol, ethyl acetate) from the manufacturing process are detected using an appropriate column (e.g., PEG or polar column). |
| Related Substances / Impurities | High-Performance Liquid Chromatography (HPLC) | Separates the main peak from impurity peaks via gradient elution and detects degradation or by-products using a UV detector. Calculates individual and total impurity levels. |
| Infrared Absorption | Fourier Transform Infrared Spectroscopy (FT-IR) | Sample is prepared as a pellet (e.g., KBr pellet method) and scanned in the infrared region. Compares with reference spectra to confirm functional groups (e.g., acid anhydride C=O, phenolic hydroxyl group). |
| Solubility | Solubility Test | Small amounts of sample are added to various solvents (e.g., water, ethanol, acetone, ethyl acetate) to observe solubility, verifying that physicochemical properties meet expectations. |
| Residue on Ignition | Sulfated Ash Method | The sample is ignited at high temperature, treated with sulfuric acid, and the residue is weighed to detect inorganic impurities. Suitable for assessing inorganic impurity levels. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After digestion, the content of heavy metals such as lead, cadmium, mercury, and arsenic is determined to ensure compliance with pharmacopoeia or safety standard limits. |
Technical Specifications of 3-HYDROXYPHTHALIC ANHYDRIDE
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 142–146 °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-HYDROXYPHTHALIC ANHYDRIDE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3-HYDROXYPHTHALIC ANHYDRIDE
Packaging of 3-HYDROXYPHTHALIC ANHYDRIDE
Industrial 3-HYDROXYPHTHALIC ANHYDRIDE 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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