China Factory Direct
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| CAS number | 14691-88-4 |
| Product name | 4-Amino-TEMPO, free radical |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeMaterial 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 |
|---|---|---|
| Polymers | UV stabilizer to inhibit photodegradation of polymers | Added to plastics, coatings, or fibers to absorb UV radiation and quench free radicals |
| Coatings Industry | Enhances weather resistance and anti-aging performance of outdoor coatings | Incorporated as an additive in coating formulations and co-cured with the resin system |
| Textile Industry | Improves light stability of synthetic fibers (e.g., polyester, nylon) | Blended with polymer chips prior to melt spinning or applied via post-finishing impregnation |
| Agricultural Films | Extends service life of agricultural mulch films by resisting solar aging | Compounded with polyethylene or EVA resins for blown-film extrusion |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Related Substances | HPLC-DAD | Separation and identification of impurities based on retention time and UV spectral match; quantified relative to main peak. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify volatile organic solvents per ICH Q3C guidelines. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine generation to determine water content based on stoichiometric reaction with Karl Fischer reagent. |
| Heavy Metals | ICP-OES | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) after acid digestion using inductively coupled plasma optical emission spectrometry. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using anion-exchange column and suppressed conductivity detection. |
| Sulfated Ash | Gravimetric Analysis | Residue mass measured after incineration at 700-800 C following sulfuric acid treatment, indicating inorganic impurities. |
| Optical Rotation | [alpha]D Measurement | Determination of specific rotation using sodium D-line light to confirm chiral integrity and enantiomeric purity. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed as solid-to-liquid phase change, used for identity and purity assessment. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to calculate size distribution of dry or dispersed particles. |
| Bulk Density | USP <616> Tap Density Test | Mass per unit volume measured before and after standardized mechanical tapping to assess powder flow properties. |
| Microbial Limits | Membrane Filtration & Plate Count | Enumeration of aerobic microorganisms and absence testing for specified pathogens per USP <61> and <62>. |
| Test Item | Specification |
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| Appearance | Red solid |
| Purity | >=98.0% (GC) |
| Total Impurities | <=2.0% (GC) |
| Single Impurity | <=0.5% (GC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 148–152°C |
| Identification (IR) | Conforms to reference spectrum |
| Residue on Ignition | <=0.1% |
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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.