China Factory Direct
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| CAS number | 2156-04-9 |
| Product name | 4-VINYLPHENYLBORONIC ACID |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic GradeReagent 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | As a synthetic intermediate | Used in the preparation of anti-inflammatory and antitumor agents |
| Materials Science | Preparation of functionalized materials | Incorporated into polymers via click chemistry reactions |
| Electronic Chemicals | Photoresist modification | Employed as a crosslinker or functional monomer in photoresist formulations |
| Polymer Chemistry | Copolymer synthesis | Copolymerized with acrylate monomers for specialty resin production |
| Analytical Chemistry | Solid-phase extraction materials | Immobilized on solid-phase extraction columns for metal ion enrichment |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies 4-vinylbenzeneboronic acid peak area against a calibrated standard curve using UV detection at ~254 nm. |
| Related Substances | HPLC-UV | Identifies and quantifies impurities (e.g., 4-ethylbenzeneboronic acid, boroxines, residual solvents) by retention time and peak area relative to main peak. |
| Residual Solvents (e.g., THF, methanol, toluene) | GC-FID | Separates and quantifies volatile organic solvents via gas chromatography with flame ionization detection using internal standard calibration. |
| Water Content | Karl Fischer Titration | Measures water by coulometric or volumetric titration where iodine reacts stoichiometrically with water in a pyridine-methanol solvent system. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Quantifies trace metal impurities after acid digestion by detecting elemental ions based on mass-to-charge ratio with high sensitivity. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by ignition at 700-800 C followed by precise weighing of the non-volatile residue. |
| Melting Point | Capillary Melting Point Apparatus | Measures temperature range at which solid transitions to liquid, indicating purity and identity via thermal behavior. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles or discoloration under controlled white light against defined standards. |
| pH of Aqueous Suspension | pH Meter | Measures hydrogen ion activity in a standardized suspension (e.g., 1% w/v in water) using a calibrated glass electrode. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride anions using anion-exchange column and conductivity detection with sodium carbonate eluent. |
| Boron Content | ICP-OES | Determines total boron concentration after sample digestion by measuring atomic emission intensity at characteristic wavelengths (e.g., 249.773 nm). |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid particles in suspension by analyzing angular variation in laser light scattering intensity. |
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 148–152°C |
| Identification (NMR) | Consistent with structure |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.