Biphenyl-4,4'-dicarboxylic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 787-70-2 |
| Product name | Biphenyl-4,4'-dicarboxylic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial 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 Biphenyl-4,4'-dicarboxylic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Biphenyl-4,4'-dicarboxylic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Biphenyl-4,4'-dicarboxylic acid
| Industry | Application | Process |
|---|---|---|
| Chemicals | Monomer for polyester resin synthesis | Condensation polymerization with diols |
| Chemicals | Precurser for polyimide synthesis | High-temperature cyclization reaction with diamines |
| Dyes | Intermediate for azo dye synthesis | Diazotization followed by coupling with phenols or amines |
| Polymers | Production of high-performance engineering plastics | Participation in copolymerization or crosslinking as an aromatic dicarboxylic acid |
| Pesticides | Intermediate for certain herbicides and fungicides | Functional group transformation reactions, such as esterification and amidation |
Manufacturing Quality Control of Biphenyl-4,4'-dicarboxylic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies carboxylic acid groups by neutralization with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Moisture Content | Karl Fischer Titration | Determines water content based on stoichiometric reaction of iodine with water in a methanol-based reagent. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by weighing residue after high-temperature ashing. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals by measuring absorption of specific wavelengths of light by atomized sample vapor. |
| Sulfated Ash | Gravimetric Analysis | Determines inorganic sulfate residue after combustion and treatment with sulfuric acid, followed by ignition and weighing. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Detects chloride ions via precipitation titration with silver nitrate using a silver indicator electrode. |
| Iron Content | ICP-OES | Measures iron concentration by detecting characteristic atomic emission lines after plasma excitation. |
| Melting Point | Capillary Melting Point Determination | Identifies purity and identity by observing temperature range at which solid transitions to liquid under controlled heating. |
| Organic Volatile Impurities | Gas Chromatography (GC) | Separates and quantifies residual solvents or low-boiling organics using capillary column and flame ionization detection. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Evaluates yellowness/brownness by comparing sample solution color to APHA platinum-cobalt standard scale. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid particles by analyzing angular variation in scattered laser light intensity. |
| Bulk Density | Gravimetric Volumetric Method | Determines mass per unit volume of freely settled powder in a calibrated cylinder. |
Technical Specifications of Biphenyl-4,4'-dicarboxylic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 196–200°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | 470–490 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 Biphenyl-4,4'-dicarboxylic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Biphenyl-4,4'-dicarboxylic acid
Safety Information of Biphenyl-4,4'-dicarboxylic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of Biphenyl-4,4'-dicarboxylic acid
Industrial Biphenyl-4,4'-dicarboxylic 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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