3,4-dihydro-1H-2-benzopyran-1-one Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 4702-34-5 |
| Product name | 3,4-dihydro-1H-2-benzopyran-1-one |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural 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 3,4-dihydro-1H-2-benzopyran-1-one
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3,4-dihydro-1H-2-benzopyran-1-one Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3,4-dihydro-1H-2-benzopyran-1-one
| Industry | Application | Process |
|---|---|---|
| Pesticides | Fungicide | Applied via foliar spray or soil treatment to control fungal diseases in crops |
| Pesticides | Seed treatment | Used as a seed protectant to prevent fungal infection during seed germination |
| Agricultural chemicals | Formulation component | Co-formulated with other active ingredients to enhance fungicidal efficacy and broaden the antimicrobial spectrum |
Manufacturing Quality Control of 3,4-dihydro-1H-2-benzopyran-1-one
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at characteristic wavelength, calibrated against certified reference standard. |
| Related Substances | HPLC-DAD | Separation and detection of impurities using gradient HPLC with diode-array detection for spectral confirmation and relative response factor correction. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify volatile organic solvents based on retention time and peak area calibration. |
| Heavy Metals | ICP-MS | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) via inductively coupled plasma mass spectrometry after acid digestion. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode; endpoint determined by potential inflection corresponding to AgCl precipitation. |
| Sulfate Content | Gravimetric Analysis | Precipitation as barium sulfate under controlled conditions, followed by filtration, drying, and weighing of the purified precipitate. |
| Water Content | Karl Fischer Titration | Coulometric or volumetric titration using iodine-based reagent; water reacts stoichiometrically with iodine, sulfur dioxide, and base in methanol medium. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against established reference standards under controlled lighting and viewing conditions. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, using calibrated digital apparatus per USP <741>. |
| pH (1% aqueous solution) | pH Meter | Measurement of hydrogen ion activity in a 1% w/v aqueous suspension using calibrated pH electrode and temperature compensation. |
| Loss on Drying | Thermogravimetric Analysis | Weight loss measured after heating sample at 105 C for 2 hours under forced-air oven, per USP <731>. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity patterns to calculate volume-based particle size distribution in dispersed dry or wet sample. |
Technical Specifications of 3,4-dihydro-1H-2-benzopyran-1-one
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.485–1.495 |
| Relative Density (20°C/25°C) | 1.02–1.06 g/cm³ |
| Odor | Characteristic mild 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 3,4-dihydro-1H-2-benzopyran-1-one
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3,4-dihydro-1H-2-benzopyran-1-one
Safety Information of 3,4-dihydro-1H-2-benzopyran-1-one
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 3,4-dihydro-1H-2-benzopyran-1-one
Industrial 3,4-dihydro-1H-2-benzopyran-1-one 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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