1143-72-2 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1143-72-2 |
| Product name | 1143-72-2 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeReagent 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 1143-72-2
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1143-72-2 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1143-72-2
| Industry | Application | Process |
|---|---|---|
| Cosmetics | UV absorber (for sunscreen products) | Added to formulations as a photostabilizer to protect skin by absorbing UV-A and UV-B radiation |
| Polymers/Plastics | Photostabilizer (to prevent material aging) | Added during polymer processing to inhibit photodegradation by quenching free radicals or absorbing ultraviolet radiation |
| Coatings/Inks | UV screening agent (to protect coating color and integrity) | Incorporated into coating or ink systems to reduce fading and degradation by absorbing ultraviolet radiation |
| Pharmaceuticals | Pharmaceutical intermediate (for synthesizing other compounds) | Used as a precursor or intermediate in organic synthesis reactions, such as the preparation of functional molecules |
| Research/Laboratory | Chemical reagent (for photochemical research or as a standard) | Employed in analytical experiments, photochemical reaction studies, or as a reference material for instrument calibration |
Manufacturing Quality Control of 1143-72-2
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 280 nm, calibrated against certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV; identification based on retention time comparison and peak area normalization. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric titration measuring water content via iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 700-800 C to combust organic matter, then weighing inorganic residue as sulfate ash. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification after acid digestion; detection based on atomic emission intensity at characteristic wavelengths. |
| Chloride Impurity | Ion Chromatography | Separation of chloride anions on anion-exchange column with suppressed conductivity detection. |
| Sulfated Ash | Gravimetric Analysis | Same principle as residue on ignition but with sulfuric acid pre-treatment to convert metals to sulfates before ignition. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually or automatically as the temperature range where solid transforms to liquid. |
| Organic Volatile Impurities | GC-FID | Headspace or direct injection GC with flame ionization detection for residual solvents like methanol, acetone, or ethyl acetate. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against standard white background under controlled lighting. |
| pH of Aqueous Suspension | pH Meter | Measurement of pH in a defined suspension (e.g., 1% w/v in water) using calibrated glass electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine volume-based particle size distribution in dispersed sample. |
Technical Specifications of 1143-72-2
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 195–199 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
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 1143-72-2
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1143-72-2
Packaging of 1143-72-2
Industrial 1143-72-2 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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