3,6-dihydro-2H-pyran Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3174-74-1 |
| Product name | 3,6-dihydro-2H-pyran |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum |
| 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 3,6-dihydro-2H-pyran
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,6-dihydro-2H-pyran Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,6-dihydro-2H-pyran
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate in the synthesis of pharmaceuticals (e.g., antibiotics, antiviral agents) | Organic synthesis, catalytic reactions |
| Fine Fragrances & Cosmetics | Used to synthesize fragrance ingredients with fruity or floral characteristics | Esterification, oxidation |
| Pesticides | Chemical intermediate for insecticide or herbicide production | Condensation, cyclization |
| Polymer Materials | Monomer or crosslinker in polymerization to produce functional polymeric materials | Free-radical polymerization, ring-opening polymerization |
| Research Reagents | Applied in organic chemistry research for heterocyclic compound synthesis or protecting group chemistry | Laboratory-scale synthesis |
Manufacturing Quality Control of 3,6-dihydro-2H-pyran
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies 3,6-dihydro-2H-pyran content by separation and flame ionization detection relative to an internal or external standard. |
| Water Content | Karl Fischer Titration | Determines water by coulometric or volumetric titration using iodine generated in situ via electrochemical reaction with water. |
| Acidity (as Acetic Acid) | Acid-Base Titration with NaOH | Measures acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein or potentiometric endpoint detection. |
| Residue on Ignition | Gravimetric Analysis | Evaluates non-volatile inorganic residue after controlled high-temperature ashing and weighing. |
| Color (APHA) | Visual Comparison or Spectrophotometry at 455 nm | Assesses yellowness by comparing sample color to platinum-cobalt standards or measuring absorbance at 455 nm. |
| Density at 20 degC | Digital Density Meter | Determines mass per unit volume using oscillating U-tube principle calibrated with air and water. |
| Refractive Index at 20 degC | Refractometry | Measures bending of light through the sample at specified temperature to infer purity and composition. |
| Distillation Range | Simple Distillation with Thermometer | Evaluates volatility profile by recording initial and final boiling points under controlled atmospheric pressure. |
| Heavy Metals (as Pb) | ICP-OES | Quantifies total heavy metals after acid digestion by detecting characteristic atomic emission wavelengths. |
| Chloride Content | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Peroxide Value | Iodometric Titration | Measures hydroperoxides by their reaction with iodide to liberate iodine, titrated with sodium thiosulfate. |
| Non-Volatile Residue | Evaporation and Gravimetry | Determines residue after evaporation of a fixed sample volume under controlled temperature and vacuum, followed by weighing. |
Technical Specifications of 3,6-dihydro-2H-pyran
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.435–1.445 |
| Relative Density (20°C/25°C) | 0.875–0.885 g/cm³ |
| Odor | Characteristic pungent odor |
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 3,6-dihydro-2H-pyran
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,6-dihydro-2H-pyran
Packaging of 3,6-dihydro-2H-pyran
Industrial 3,6-dihydro-2H-pyran 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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