Benzil Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 134-81-6 |
| Product name | Benzil |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Electronic GradeMaterial GradeIndustrial GradeSpecialty 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 Benzil
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Benzil Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Benzil
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Key intermediate for synthesizing antifungal agents (e.g., ketoconazole, miconazole) | Used to construct the imidazole ring via condensation of benzil with ammonia or amines |
| Organic Synthesis | Preparation of biphenyl derivatives and polycyclic aromatic compounds | Applied as a diacylating agent in Friedel–Crafts acylation reactions; alternatively reduced to hydrobenzoin for subsequent functional group transformations |
| Photosensitive Materials | Component of photoinitiators (e.g., in amine co-initiator systems) for UV-curable inks and coatings | Undergoes α-cleavage upon UV irradiation to generate benzoyl radicals, initiating polymerization of acrylate monomers |
| Liquid Crystal Materials | Rigid biphenyl core unit in liquid crystal monomer synthesis | Functionalized with side chains and terminal groups via bromination followed by coupling reactions (e.g., Suzuki or Ullmann coupling) to construct nematic liquid crystal molecules |
Manufacturing Quality Control of Benzil
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with methanol-water or acetonitrile-water as the mobile phase. Detection is performed at 230–280 nm using a UV detector for quantitative analysis of benzoyl peroxide content, offering high sensitivity and accuracy. |
| Purity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | The sample is either derivatized or directly injected, separated by gas chromatography, and then detected by mass spectrometry to identify the main component and organic impurities, used for assessing purity and impurity profile. |
| Residual Solvent Testing | Gas Chromatography (GC) | Based on pharmacopoeial methods (e.g., Chinese Pharmacopoeia, USP), residual organic solvents from manufacturing (such as methanol, acetone, benzene) are detected using headspace sampling-GC to ensure compliance with safety limits. |
| Peroxide Content | Iodometric Titration | In acidic conditions, benzoyl peroxide reacts with potassium iodide to release iodine, which is then titrated with a standard sodium thiosulfate solution. The peroxide content is calculated based on the volume consumed, suitable for rapid quantification of total peroxides. |
| Moisture Content | Karl Fischer Titration | Determines moisture content in samples based on electrochemical principles, available in volumetric and coulometric methods. Offers high precision and is suitable for trace moisture detection. |
| Melting Point Determination | Capillary Melting Point Method | The sample is packed into a capillary tube and heated in a melting point apparatus; the initial and final melting temperatures are observed, used for identification and preliminary purity assessment. |
| Appearance and Characteristics | Visual Inspection | Observe physical properties such as color, state (white to off-white powder), and odor to determine whether they meet standard specifications. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, heavy metal residues (such as lead, arsenic, mercury, cadmium) are determined using atomic absorption spectroscopy or inductively coupled plasma mass spectrometry to ensure compliance with safety requirements. |
| Microbial Limits | Microbial Limit Test | Perform tests according to pharmacopoeial requirements, including total aerobic microbial count, mold and yeast count, and testing for specified microorganisms (e.g., Escherichia coli, Salmonella), ensuring sterility or compliance with non-sterile product standards. |
| Particle Size Distribution | Laser Particle Size Analysis | Measures particle size distribution based on laser light scattering principles. Particularly important for topical formulations of benzoyl peroxide, as it affects dispersion and skin permeability. |
Technical Specifications of Benzil
| Test Item | Specification |
|---|---|
| Appearance | Yellow-green solid |
| Purity | >=98.5% (GC) |
| Melting Point | 94.0–96.0 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
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 Benzil
| CAS/Product ID | *Required fields | |
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NMR Spectra of Benzil
Packaging of Benzil
Industrial Benzil 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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