3,3',4,4'-Biphenyltetracarboxylic dianhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2420-87-3 |
| Product name | 3,3',4,4'-Biphenyltetracarboxylic dianhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeElectronic 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 3,3',4,4'-Biphenyltetracarboxylic dianhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,3',4,4'-Biphenyltetracarboxylic dianhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
| Industry | Application | Process |
|---|---|---|
| Polymers | Synthesis of polyimides | Condensation polymerization with diamine monomers |
| Electronics Materials | Alignment layer material for liquid crystal displays | Photolithographic patterning to form alignment layers |
| Aerospace | Preparation of high-performance composites | Curing agent for resin matrices |
| Electronic Packaging | Modification of epoxy resins | Crosslinking agent to enhance thermal stability and mechanical properties |
| Coatings | Formulation of high-temperature-resistant coatings | Reaction with epoxy or other resins to form coating films |
Manufacturing Quality Control of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | High Performance Liquid Chromatography (HPLC) | Quantitative determination using UV detection and external standard calibration against certified reference material. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration based on the reaction of water with iodine and sulfur dioxide in a methanol-pyridine medium. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 750-800 C. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitation of sulfate as BaSO4 followed by filtration, drying, and weighing. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion by measuring absorbance of atomic vapor at characteristic wavelength. |
| Iron Content | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Multi-element detection via emission intensity of excited iron atoms in high-temperature plasma. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of visible particulates or discoloration under controlled lighting. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid using calibrated capillary tube method. |
| Acid Number | Acid-Base Titration | Neutralization of acidic functional groups with standardized NaOH solution using phenolphthalein indicator. |
| Organic Volatile Impurities | Gas Chromatography (GC) | Separation and quantification of residual solvents or low-boiling impurities using flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to calculate size distribution of dry powder sample. |
Technical Specifications of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 285-290°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Identification (IR) | Conforms to reference spectrum |
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 3,3',4,4'-Biphenyltetracarboxylic dianhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
Safety Information of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 3,3',4,4'-Biphenyltetracarboxylic dianhydride
Industrial 3,3',4,4'-Biphenyltetracarboxylic dianhydride 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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