TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 149777-00-4 |
| Product name | TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent 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 TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate | Used as a building block in the synthesis of biologically active compounds, such as certain drug molecules |
| Pesticides | Intermediate | Used in the synthesis of active ingredients in pesticides |
| Materials Science | Synthesis of Polymeric Materials | Applied as a monomer in polymerization reactions to produce polymeric materials with specialized functionalities |
| Research Institutions | Laboratory Research | Applied in research and development of chemical reactions to explore novel synthetic pathways |
Manufacturing Quality Control of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination based on peak area comparison with a certified reference standard using reversed-phase chromatography and UV detection at ~210 nm. |
| Related Substances | HPLC-UV/DAD | Separation and detection of structurally related impurities (e.g., monoester, hydrolysis products, starting materials) via gradient HPLC with diode-array detection. |
| Residual Solvents | GC-FID | Identification and quantification of volatile organic solvents (e.g., methanol, THF, toluene) using gas chromatography with flame ionization detection against calibrated standards. |
| Water Content | Karl Fischer Titration (Coulometric) | Electrochemical titration measuring water content based on the stoichiometric reaction of iodine with water in anhydrous pyridine/methanol medium. |
| Heavy Metals | ICP-MS | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) after acid digestion, using inductively coupled plasma mass spectrometry for sub-pptr detection. |
| Acid Value | Acid-Base Titration (NaOH, phenolphthalein) | Determination of free carboxylic acid groups by titration with standardized sodium hydroxide solution; indicates extent of ester hydrolysis. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after controlled high-temperature ashing (700–800 °C), indicating inorganic impurities or catalyst residues. |
| Optical Rotation | [α]D Measurement (Polarimetry) | Determination of specific optical rotation using sodium D-line light to confirm chiral integrity and absence of racemization. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition assessment via controlled heating to verify crystalline identity and purity (sharp melting range consistent with reference). |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder particle size distribution using Mie scattering theory to ensure batch-to-batch consistency in handling and dissolution. |
| Microbial Limits | Membrane Filtration + Culture | Quantitative enumeration of aerobic microorganisms and detection of specified pathogens (e.g., E. coli, S. aureus) per pharmacopeial guidelines (e.g., USP <61>). |
Technical Specifications of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
| Test Item | Specification |
|---|---|
| Appearance | Light yellow liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Odor | Characteristic ester-like odor |
| Refractive Index (n20/D) | 1.440–1.450 |
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 TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
Safety Information of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER
Industrial TETRAHYDROPYRAN-4,4-DICARBOXYLIC ACID DIMETHYL ESTER 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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