China Factory Direct
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| CAS number | 70198-29-7 |
| Product name | Light Stabilizer UV-622 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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 |
|---|---|---|
| Plastics Industry | UV stabilization | Incorporated into resin during compounding |
| Coatings Industry | Enhancing coating weather resistance | Blended into coating formulations |
| Rubber Industry | Preventing rubber product aging | Added during rubber mixing |
| Personal Care Industry | Protecting products from light-induced degradation | Formulated as an ingredient |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies 622 content by UV absorption at characteristic wavelength using reverse-phase chromatography with external standard calibration. |
| Appearance | Visual Inspection | Assesses physical state and color by observing sample in transmitted light against white background under controlled lighting. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid using capillary tube and calibrated thermometer. |
| Moisture Content | Karl Fischer Titration | Measures water content via coulometric or volumetric titration with iodine-based reagent reacting stoichiometrically with water. |
| Ash Content | Gravimetric Analysis (Ignition at 550 C) | Determines inorganic residue after complete combustion of organic matrix at high temperature followed by weighing. |
| Volatile Matter | Thermogravimetric Analysis (TGA) or Loss on Drying | Measures mass loss upon heating under controlled conditions to drive off volatile components. |
| Acid Number | Acid-Base Titration (NaOH in ethanol) | Quantifies acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| UV Absorption Spectrum | UV-Vis Spectrophotometry | Records absorbance across 200–400 nm to confirm spectral profile and identify degradation or contamination. |
| Heavy Metals (Pb, Cd, Hg, Cr) | ICP-OES | Simultaneously quantifies trace metal elements after acid digestion using plasma excitation and elemental emission detection. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 550 C) | Same principle as ash content; measures non-volatile inorganic residue after high-temperature ignition. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of solid particles in suspension by analyzing angular scattering pattern of laser beam. |
| Bulk Density | ASTM D1895 Method A (Tapped Density) | Measures mass per unit volume of powder after specified tapping cycles using calibrated cylinder and balance. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white granular solid |
| Purity | >=98.5% |
| Melting Point | 50–55°C |
| Water Content (KF) | <=0.3% |
| Total Impurities | <=1.2% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic, faint |
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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.