p-phenylenebis(trimellitate anhydride)) Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2770-49-2 |
| Product name | p-phenylenebis(trimellitate anhydride)) |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Electronic GradeMaterial GradeIndustrial GradeSpecialty 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 p-phenylenebis(trimellitate anhydride))
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk p-phenylenebis(trimellitate anhydride)) Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of p-phenylenebis(trimellitate anhydride))
| Industry | Application | Process |
|---|---|---|
| Polymers | Monomer for synthesizing polyimide (PI) and polyamide-imide (PAI) | Undergoes high-temperature condensation polymerization with diamines to form high-performance thermosetting resins |
| Electronics | Production of flexible circuit substrates, insulating films, and high-temperature encapsulation materials | Acts as a dianhydride component in solution or melt polymerization to yield polyimide films with high dielectric performance and thermal stability |
| Aerospace | Manufacture of high-temperature-resistant structural composites and coatings | Copolymerizes with aromatic diamines, followed by thermal imidization to form carbon fiber-reinforced polyimide matrices |
| Optoelectronics | Synthesis of transparent polyimides for OLED substrates and flexible displays | Molecular structure is tailored to suppress yellowing; optical-grade transparent films are produced via solution casting and thermal treatment |
| Fine Chemicals | Organic synthesis intermediate for functionalized aromatic compounds | Undergoes ring-opening reactions with nucleophiles such as amines and alcohols to yield imide or ester derivatives |
Manufacturing Quality Control of p-phenylenebis(trimellitate anhydride))
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by comparison of peak area against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration based on the reaction of iodine with water in a methanol-based solvent system. |
| Acid Number | Acid-Base Titration | Neutralization of acidic functional groups with standardized potassium hydroxide solution using phenolphthalein indicator. |
| Residue on Ignition | Gravimetric Analysis | Determination of non-volatile inorganic impurities by high-temperature ashing followed by weighing of residual ash. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of trace metals after acid digestion, based on atomic emission intensity at characteristic wavelengths. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using a silver indicator electrode to detect endpoint via potential change. |
| Melting Point | Capillary Melting Point Apparatus | Thermal determination of solid-to-liquid transition temperature using calibrated capillary tube method. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of visible particulates or discoloration under controlled lighting. |
| Solubility in Common Solvents | Qualitative Solubility Test | Observation of complete dissolution or suspension in specified solvents (e.g., acetone, DMF) at room temperature. |
| Residual Solvents | GC-FID | Separation and quantification of volatile organic solvents using gas chromatography with flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measurement of size distribution based on angular dependence of laser light scattering from dispersed particles. |
| Specific Optical Rotation | Polarimetry | Determination of chiral impurity content by measuring rotation of plane-polarized light through a solution at specified concentration and wavelength. |
Technical Specifications of p-phenylenebis(trimellitate anhydride))
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow powder or crystals |
| Purity | >=98.5% (HPLC) |
| Melting Point | 205–210 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
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 p-phenylenebis(trimellitate anhydride))
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of p-phenylenebis(trimellitate anhydride))
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Industrial p-phenylenebis(trimellitate 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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