4,4'-Dihydroxybenzil Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 33288-79-8 |
| Product name | 4,4'-Dihydroxybenzil |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty 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) |
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Documents We Provide for 4,4'-Dihydroxybenzil
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,4'-Dihydroxybenzil Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,4'-Dihydroxybenzil
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical R&D | Organic synthesis intermediate | Used as a precursor in the synthesis of biologically active compounds to construct complex molecular frameworks |
| Materials Science | Monomer for high-performance polymers | Employed in the preparation of high-temperature- and chemical-resistant materials such as polyesters and polycarbonates |
| Organic Chemistry Research | Synthesis of functionalized aromatic compounds | Applied as a bisphenol derivative in coupling and condensation reactions for the design of novel organic molecules |
Manufacturing Quality Control of 4,4'-Dihydroxybenzil
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric titration based on the stoichiometric reaction of water with iodine, sulfur dioxide, and base in methanol/pyridine medium. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Determination of inorganic residue after incineration at 700-800 C followed by weighing of the cooled crucible. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of metallic impurities after acid digestion, based on atomic emission intensities at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride anions using anion-exchange column and suppressed conductivity detection. |
| Sulfate Impurity | Barium Chloride Turbidimetry | Precipitation of sulfate as BaSO4 in acidic medium; quantification via measurement of turbidity at 420 nm. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, observed visually under controlled heating rate. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of residual solvents and volatile organics using capillary column and flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measurement of particle size distribution in suspension based on angular dependence of scattered laser light intensity. |
| Color (APHA) | Visual Comparison or Spectrophotometric Method | Assessment of yellowness relative to platinum-cobalt standards using visual matching or absorbance at 455 nm. |
| pH of Aqueous Suspension | pH Meter | Measurement of hydrogen ion activity in a defined aqueous suspension (e.g., 1% w/v) using calibrated glass electrode. |
| Related Substances | HPLC-DAD | Identification and quantification of structurally related impurities using diode array detection and retention time comparison with reference standards. |
Technical Specifications of 4,4'-Dihydroxybenzil
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 178–182°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
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'-Dihydroxybenzil
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| Lot/Batch Number | *Required fields | |
NMR Spectra of 4,4'-Dihydroxybenzil
Packaging of 4,4'-Dihydroxybenzil
Industrial 4,4'-Dihydroxybenzil 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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