China Factory Direct
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| CAS number | 13148-05-5 |
| Product name | ETHYL 3-OXO-4-(TRIPHENYLPHOSPHORANYLIDENE)BUTYRATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/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 |
|---|---|---|
| Organic Synthesis | Wittig reagent for carbon–carbon double bond construction | Reacts with aldehydes or ketones in anhydrous solvents to yield alkenes |
| Pharmaceutical Chemistry | Synthesis of alkene-containing pharmaceutical intermediates | Integrated into multi-step synthetic routes; introduces targeted unsaturation via Wittig olefination |
| Materials Science | Synthesis of functional alkene monomers for polymeric materials | Reacted with aromatic or aliphatic aldehydes to prepare conjugated or non-conjugated alkene monomers for subsequent polymerization |
| Fine Chemicals | Preparation of alkene-based compounds for fragrances, dyes, and agrochemicals | Serves as a key reagent for C=C bond formation, enabling functional group transformation under mild conditions |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination based on 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 using gradient HPLC with diode-array detection; impurities reported as area percent relative to main peak. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection for quantification of common solvents (e.g., ethyl acetate, toluene, THF) against calibrated standards. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine generated electrochemically to react stoichiometrically with water in the sample. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Multi-element quantification after acid digestion by inductively coupled plasma mass spectrometry with isotopic detection and internal standard correction. |
| Chloride Content | Ion Chromatography | Separation of chloride anions on an anion-exchange column with suppressed conductivity detection; quantified via external calibration. |
| Phosphorus Content | ICP-OES | After microwave-assisted acid digestion, total phosphorus measured by inductively coupled plasma optical emission spectroscopy at characteristic wavelength (213.6 nm). |
| Acid Value | Acid-Base Titration | Neutralization of free carboxylic acid groups with standardized potassium hydroxide solution using phenolphthalein indicator or potentiometric endpoint. |
| Residue on Ignition | Gravimetric Analysis | Mass loss upon high-temperature ashing (700-800 C) followed by weighing of non-volatile inorganic residue. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually or automatically as the temperature range at which solid-to-liquid phase change occurs. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral centers in solution at specified concentration, path length, and temperature. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity versus angle to determine volume-based particle size distribution in dispersed solid samples. |
| Test Item | Specification |
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| Appearance | Off-White To Pale Yellow Solid |
| Purity | >=98.0% (HPLC) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 145–149°C |
| Identification (NMR) | 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.