CYASORB UV-3638 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 18600-59-4 |
| Product name | CYASORB UV-3638 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeElectronic 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 CYASORB UV-3638
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk CYASORB UV-3638 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of CYASORB UV-3638
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | UV stabilizer for engineering plastics such as polycarbonate (PC), preventing yellowing and degradation of mechanical properties | Blended with resin prior to melt extrusion or injection molding; typical dosage: 0.1–0.5 wt% |
| Coatings Industry | UV-stabilizing component in high-performance automotive clearcoats, wood coatings, and industrial protective coatings | Incorporated during coating formulation; used synergistically with other additives (e.g., HALS, photoinitiators); commonly dispersed as masterbatch or solution |
| Adhesives & Sealants | Enhances outdoor weatherability of acrylic and polyurethane adhesives | Added under stirring at room temperature or moderate temperature (<80 °C) during adhesive compounding; high temperatures must be avoided to prevent decomposition |
| Optical Films | UV protection for optical polyester (PET)-based substrates, including reflective films and brightness enhancement films in LCD backlight modules | Loaded into functional layers via co-extrusion or coating processes; requires low volatility, high compatibility, and optical clarity |
Manufacturing Quality Control of CYASORB UV-3638
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Place the sample on a white background and observe its color, condition, and presence of impurities; it is typically a light yellow to yellow powder or granules. |
| Purity (Main Component Content) | High-Performance Liquid Chromatography (HPLC) | Use a reverse-phase column (e.g., C18) with a UV detector (typically at 300–350 nm wavelength), quantify the content of UV-3638 by comparing with standard samples, and assess purity. |
| Melting Point | Melting Point Determination Method | Determine the temperature at which the sample transitions from solid to liquid using a melting point apparatus. The typical melting point range for UV-3638 is approximately 140–145°C, used to evaluate material consistency. |
| UV Absorption Properties | UV-Visible Spectrophotometry (UV-Vis) | Dissolve the sample in an appropriate solvent (e.g., methanol or ethanol), scan the absorbance between 200–400 nm, and measure the maximum absorption wavelength (λmax) and molar absorptivity to verify whether the absorption characteristics meet the standard (usually λmax ≈ 360–370 nm). |
| Moisture Content | Karl Fischer Titration | Determine the moisture content by titrating the sample with Karl Fischer reagent, ensuring the product's dryness meets the requirements. |
| Solubility | Dissolution Test | Add the sample to common solvents such as water, ethanol, and toluene, shake, and observe the dissolution behavior to evaluate its solubility in different media. |
| Heavy Metal Content | Atomic Absorption Spectrometry (AAS) or ICP-MS | Determine residual levels of heavy metals such as lead, cadmium, mercury, and arsenic after digestion, ensuring compliance with environmental and safety standards. |
| Residual Solvents | Gas Chromatography (GC) | Detect organic solvents possibly remaining from the production process (e.g., methanol, ethanol, acetone), ensuring they meet ICH or relevant regulatory limits. |
| Loss on Ignition (Ash Content) | Calcination Residue Method | Heat the sample to constant weight at high temperature, weigh the residual inorganic material, and calculate the ash content, reflecting the level of inorganic impurities. |
Technical Specifications of CYASORB UV-3638
| Test Item | Specification |
|---|---|
| Appearance | Light green powder |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 148–152°C |
| Total Impurities | <=2.0% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=10 ppm |
| 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 CYASORB UV-3638
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of CYASORB UV-3638
Industrial CYASORB UV-3638 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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