UV-320 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3846-71-7 |
| Product name | UV-320 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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 UV-320
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk UV-320 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of UV-320
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | Stabilizer and UV stabilizer for polyvinyl chloride (PVC) | Added during PVC processing to prevent yellowing, embrittlement, and degradation of mechanical properties caused by UV exposure; typically used in combination with heat stabilizers. |
| Plastics Industry | UV stabilizer for engineering plastics | Used in injection molding or extrusion processes for engineering plastics such as polycarbonate (PC), polyamide (PA), and polyoxymethylene (POM) to enhance weather resistance and service life of finished products. |
| Rubber Industry | Antioxidant/antiozonant | Incorporated during vulcanization or compounding of synthetic rubbers (e.g., nitrile rubber, chloroprene rubber) to inhibit UV-induced photo-oxidative degradation and prevent surface cracking. |
| Coatings Industry | Weather resistance protection for coatings | Added to automotive coatings, industrial protective coatings, and wood finishes to prevent chalking, gloss loss, or delamination under outdoor UV exposure. |
| Polymer Recycling | Quality restoration of recycled materials | Added during pelletizing of post-consumer plastics—particularly PVC and polyolefins—to compensate for UV stabilizer depletion resulting from prior processing history and improve performance of recycled resins. |
| Fine Chemicals | Chemical synthesis intermediate | Serves as a benzotriazole-based intermediate for synthesizing other high-performance UV stabilizers or functional additives. |
Manufacturing Quality Control of UV-320
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (UV-320 content) | HPLC-UV | Quantification by reverse-phase HPLC with UV detection at 280-300 nm using external standard calibration. |
| Appearance | Visual Inspection | Assessment of physical state and color against standard reference under controlled lighting conditions. |
| Melting Point | Capillary Melting Point Determination | Measurement of temperature range at which solid transitions to liquid using calibrated capillary apparatus. |
| Loss on Drying | Gravimetric (105 C, 2 h) | Mass loss after drying sample at specified temperature and time, expressed as weight percent. |
| Residue on Ignition | Gravimetric (700-800 C) | Weight of non-volatile inorganic residue remaining after high-temperature ashing. |
| Heavy Metals (as Pb) | AAS or ICP-OES | Quantification of total heavy metals by atomic absorption spectroscopy or inductively coupled plasma optical emission spectrometry after acid digestion. |
| Chlorinated Impurities (e.g., o-chlorophenol) | GC-ECD | Detection and quantification of chlorinated organic impurities using gas chromatography with electron capture detection. |
| UV Absorption Spectrum | UV-Vis Spectrophotometry | Verification of characteristic absorption maxima and spectral profile in ethanol or cyclohexane solution. |
| Acid Value | Acid-Base Titration | Determination of free acidic groups by titration with standardized KOH solution using phenolphthalein indicator. |
| Water Content | Karl Fischer Titration | Quantification of water by volumetric or coulometric Karl Fischer reaction with iodine and sulfur dioxide. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry or dispersed particle size distribution using light scattering principles. |
| Bulk Density | Gravimetric (ASTM D1895) | Measurement of mass per unit volume for freely settled powder under standardized conditions. |
Technical Specifications of UV-320
| Test Item | Specification |
|---|---|
| Appearance | Light yellow to amber crystalline solid |
| Purity | >=98.5% |
| Melting Point | 68.0 - 72.0 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.3% |
| Residue on Ignition | <=0.1% |
| Color (APHA/Pt-Co) | <=100 |
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 UV-320
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of UV-320
Packaging of UV-320
Industrial UV-320 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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