China Factory Direct
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| CAS number | 119-61-9 |
| Product name | Benzophenone |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeMaterial GradeElectronic 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 |
|---|---|---|
| Cosmetics | UV absorber in sunscreen products | Dissolved in organic solvent and incorporated into emulsions or creams |
| Plastics | Photoinitiator for UV-curable plastic coatings | Mixed with photosensitive resins and polymerized under UV irradiation |
| Inks | Component of UV-curable ink systems to accelerate drying and improve adhesion | Blended with monomers, oligomers, and photoinitiators, then cured under UV light |
| Coatings | Light stabilizer and UV absorber to enhance weather resistance | Incorporated into acrylic or polyurethane coatings and cured via spray or dip coating |
| Fragrances | Fragrance fixative to extend scent longevity | Mixed with fragrance components and added to perfume or soap formulations |
| Pharmaceutical Synthesis | Intermediate in the synthesis of antihistamines, antibiotics, and other active pharmaceutical ingredients | Participates in multistep synthesis via Friedel-Crafts acylation or reduction reactions |
| Optoelectronic Materials | Hole-transport layer material in organic light-emitting diodes (OLEDs) | Deposited onto substrates via vacuum thermal evaporation or spin coating |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a C18 reversed-phase column with methanol-water or acetonitrile-water as the mobile phase. Detection is performed at around 254 nm using a UV detector. The content of benzophenone is quantified by external or internal standard methods, offering high sensitivity and good reproducibility. |
| Purity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | The sample is dissolved and injected; components are separated by gas chromatography and identified via mass spectrometry to confirm impurity structures. Suitable for evaluating volatile impurities and main component purity. |
| Impurity Testing | High-Performance Liquid Chromatography (HPLC) | Based on the assay method, gradient elution is optimized to separate and detect potential organic impurities (e.g., benzoic acid, biphenyl). Impurity levels are calculated based on peak areas. |
| Residual Solvents | Gas Chromatography (GC) | According to pharmacopoeia or relevant standards, headspace injection or direct solution injection is used to detect residual organic solvents (e.g., methanol, ethanol, acetone) from the manufacturing process. |
| Moisture Content | Karl Fischer Titration | Determines water content precisely by measuring the quantitative reaction of iodine and sulfur dioxide with water in an anhydrous environment. Widely used in raw material quality control. |
| Melting Point Determination | Melting Point Apparatus Method | Uses automatic or manual melting point apparatus to measure the initial and final melting temperatures of benzophenone. Results are compared with the standard melting point range (approximately 48–50°C) to assess purity and crystalline form consistency. |
| UV Absorption Characteristics | Ultraviolet-Visible Spectrophotometry (UV-Vis) | The sample is dissolved in ethanol or methanol and scanned between 200–400 nm to observe characteristic absorption peaks (typically near 245 nm and 340 nm), used for qualitative identification. |
| Crystal Form Analysis | X-Ray Diffraction (XRD) | Analyzes the crystal structure of solid samples to detect polymorphism and ensure consistent physical properties across batches. |
| Heavy Metal Residues | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, residual levels of heavy metals such as lead, cadmium, mercury, and arsenic are measured to comply with safety standards for pharmaceutical or cosmetic raw materials. |
| Microbial Limit Test | Microbial Limit Test Method | Performs total aerobic microbial count, mold and yeast count, and tests for specified microorganisms (e.g., Escherichia coli, Salmonella) according to pharmacopoeial requirements. Applicable to benzophenone used in cosmetics or as a pharmaceutical excipient. |
| Test Item | Specification |
|---|---|
| Appearance | White crystal flake |
| Purity | ≥99.0% |
| Loss on drying | ≤0.1% |
| Color(Hazen) | ≤60 |
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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.