4,4'-(1-Phenylethylidene) biphenol Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1571-75-1 |
| Product name | 4,4'-(1-Phenylethylidene) biphenol |
| 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 4,4'-(1-Phenylethylidene) biphenol
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,4'-(1-Phenylethylidene) biphenol Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,4'-(1-Phenylethylidene) biphenol
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | Copolymer monomer for polycarbonate resin production, enhancing heat resistance and melt processability | Melt polycondensation with phosgene or diphenyl carbonate |
| Epoxy Resins | Component of epoxy resin curing agents, improving chemical resistance and mechanical strength | Reaction with epichlorohydrin to produce modified epoxy resins, or direct participation in the curing reaction |
| Rubber Industry | Intermediate for rubber antioxidants, improving oxidation and ozone resistance | Condensation with aldehydes to produce phenolic resin-based antioxidants |
| Coatings Industry | Synthesis of high-performance phenolic resins for high-temperature coatings and adhesives | Acid-catalyzed condensation with formaldehyde or phenolic compounds |
Manufacturing Quality Control of 4,4'-(1-Phenylethylidene) biphenol
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies bisphenol AP concentration using reversed-phase HPLC with UV detection at 275 nm, based on peak area comparison against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Determines water content by coulometric or volumetric titration using iodine generated in situ via electrochemical reaction with water. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by weighing residue remaining after high-temperature ashing at 700-800 C. |
| Heavy Metals (as Pb) | ICP-OES | Quantifies total heavy metals (e.g., Pb, Cd, Cr, Hg, As) after acid digestion by measuring atomic emission intensities at element-specific wavelengths. |
| Chloride Content | Potentiometric Titration with AgNO3 | Determines chloride ions by titration with silver nitrate using a silver indicator electrode; endpoint detected by potential inflection. |
| Melting Point | Capillary Melting Point Apparatus | Measures temperature range at which solid bisphenol AP transitions to liquid, indicating purity and identity based on crystalline homogeneity. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement | Evaluates yellowness index by comparing sample solution color to APHA platinum-cobalt standards or measuring absorbance at 430 nm. |
| Organic Volatile Impurities | GC-FID | Detects and quantifies residual solvents (e.g., toluene, acetone, methanol) using gas chromatography with flame ionization detection. |
| Acid Value | Acid-Base Titration | Determines free phenolic OH groups by titration with standardized KOH in ethanol/isopropanol, using phenolphthalein indicator. |
| Ash Content | Gravimetric Analysis | Measures total inorganic residue after complete combustion at 500-600 C, expressed as weight percent of original sample. |
| Particle Size Distribution | Laser Diffraction | Analyzes dry powder particle size by measuring angular scattering pattern of laser beam passing through dispersed sample. |
| Specific Optical Rotation | Polarimetry | Measures chiral impurity or enantiomeric excess by determining rotation angle of plane-polarized light passing through solution in standard cell. |
Technical Specifications of 4,4'-(1-Phenylethylidene) biphenol
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 154-158°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic mild phenolic odor |
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 4,4'-(1-Phenylethylidene) biphenol
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4,4'-(1-Phenylethylidene) biphenol
Safety Information of 4,4'-(1-Phenylethylidene) biphenol
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 4,4'-(1-Phenylethylidene) biphenol
Industrial 4,4'-(1-Phenylethylidene) biphenol 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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