China Factory Direct
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| CAS number | 4203-49-0 |
| Product name | 2-(ALLYLOXY)TETRAHYDROPYRAN |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 |
|---|---|---|
| Chemical Synthesis | Organic synthesis intermediate | Used to construct oxygen-containing heterocyclic compounds or as an alkoxylating agent in nucleophilic substitution reactions |
| Pharmaceutical R&D | Building block for drug molecules | Introduces the allyloxy pyran moiety in medicinal chemistry to modulate lipophilicity or metabolic stability |
| Materials Science | Functional monomer | Participates in free-radical or ring-opening polymerization to produce polymeric materials with specific optical or electrical properties |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies main component peak area against calibrated standard; separation based on volatility and polarity. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine generation; stoichiometric reaction with water determines moisture content. |
| Acid Value | Acid-Base Titration with NaOH | Neutralization of acidic impurities using standardized sodium hydroxide solution; endpoint detected potentiometrically or with indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 430 nm | Compares sample color to APHA platinum-cobalt standards; quantifies yellowness index via absorbance at specified wavelength. |
| Density at 20 C | Digital Density Meter (Oscillating U-tube) | Measures oscillation period of a U-shaped tube filled with sample; correlates to mass per unit volume. |
| Refractive Index at 20 C | Abbe Refractometer | Determines ratio of light velocity in air vs. sample by measuring critical angle of total internal reflection. |
| Residue on Evaporation | Gravimetric Analysis | Evaporates known volume under controlled conditions and weighs non-volatile residue after drying. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Atomizes sample in flame or graphite furnace and measures absorption of element-specific UV-Vis radiation. |
| Chloride Content | Ion Chromatography (IC) or Potentiometric Titration with AgNO3 | Separates and quantifies chloride ions via conductivity detection (IC) or silver nitrate titration with chloride-selective electrode. |
| Aldehyde Impurities | HPLC with UV Detection after Derivatization | Derivatizes aldehydes with DNPH, separates via reversed-phase column, detects hydrazone derivatives at ~360 nm. |
| Peroxide Value | Iodometric Titration | Oxidizes iodide to iodine by organic peroxides; liberated iodine titrated with standardized sodium thiosulfate. |
| Non-Volatile Residue | Gravimetric Analysis (Hot Plate Evaporation) | Evaporates fixed mass of sample at 105 C to constant weight; difference gives residue mass. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.5% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.465–1.475 |
| Relative Density (20°C/25°C) | 1.02–1.04 g/cm³ |
| Odor | Characteristic mild ether-like odor |
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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.