China Factory Direct
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| CAS number | 90-96-0 |
| Product name | 4,4'-Dimethoxybenzophenone |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeCosmetic GradeFood 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) |
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 |
|---|---|---|
| Coatings & Inks | Photoinitiator | Used in UV-curable coatings, inks, and adhesives; absorbs UV light to generate free radicals or cations that initiate polymerization of monomers and oligomers |
| Plastics Industry | Light Stabilizer (UV Absorber) | Incorporated into plastics such as polypropylene, polyethylene, and polycarbonate; absorbs UV radiation in the 290–400 nm range and dissipates it as heat to suppress photo-oxidative degradation |
| Cosmetics | Sunscreen Agent (permitted in certain non-EU markets only) | Functions as an organic UV absorber in sunscreens and lipsticks, primarily absorbing UVA radiation (320–400 nm); usage has declined significantly due to potential sensitization and regulatory restrictions |
| Pharmaceutical Intermediates | Synthesis Precursor | Serves as a structural building block in the synthesis of antihistamines (e.g., mequitazine) and certain antifungal agents; the target molecular scaffold is constructed via multi-step reactions including reduction and cyclization |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 254 nm, comparing peak area to a certified reference standard. |
| Appearance | Visual Inspection | Assessment of physical state and color against a white background under controlled lighting; substance should be off-white to pale yellow crystalline powder. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, using calibrated capillary apparatus per USP <741>. |
| Loss on Drying | Gravimetric (105 C, 2 h) | Measurement of mass loss after drying under specified temperature and time to determine volatile content including residual solvents and moisture. |
| Residue on Ignition | Sulfated Ash (Gravimetric) | Ignition of sample at 700-800 C followed by weighing of inorganic residue to assess inorganic impurities. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and other regulated metals after acid digestion and plasma emission spectroscopy. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride ions using anion-exchange column with conductivity detection. |
| Related Substances | HPLC-DAD | Detection and quantification of structurally similar impurities (e.g., mono-methoxy analogs, benzophenone) using diode-array detection. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration with iodine-based reagent to determine trace water content based on stoichiometric reaction. |
| Solvent Residues (e.g., Methanol, Acetone) | GC-FID | Gas chromatographic separation followed by flame ionization detection to quantify residual organic solvents. |
| Acid Value | Acid-Base Titration (NaOH, phenolphthalein) | Neutralization of acidic impurities with standardized sodium hydroxide solution, indicating carboxylic or phenolic degradation products. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder dispersion using laser scattering to determine D10, D50, D90 values per ISO 13320. |
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 78-82°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| 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.