China Factory Direct
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| CAS number | 14187-32-7 |
| Product name | Dibenzo-18-crown-6 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeReagent GradeIndustrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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 |
|---|---|---|
| Chemical Research | Phase-transfer catalyst | Used to facilitate ionic reactions in nonpolar solvents, enhancing reaction rate and selectivity |
| Analytical Chemistry | Ion recognition and detection | Leverages high selective complexation with alkali metal ions—particularly K⁺—for use in ion-selective electrodes and spectroscopic analysis |
| Materials Science | Synthesis of functional materials | Employed as a building block for supramolecular architectures in the preparation of molecular sensors or stimuli-responsive materials |
| Organic Synthesis | Potassium ion carrier | Facilitates dissolution of potassium salts into organic phases in potassium salt-mediated organic reactions, improving reaction efficiency |
| Pharmaceutical R&D | Biomimetic ion channel | Applied to model ion transport mechanisms across cell membranes and study transmembrane ion transport behavior |
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Uses reverse-phase or normal-phase chromatographic columns, with a UV detector (e.g., 254 nm) to detect the main peak area, calculating the sample purity. Suitable for quantitative analysis of the main component and major impurities. |
| Structure Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR) | Analyzes the chemical shifts and coupling patterns of hydrogen and carbon atoms in the molecule using ¹H-NMR and ¹³C-NMR spectra to confirm whether the structural features of the target compound match the standard. |
| Molecular Weight Confirmation | Mass Spectrometry (MS) | Obtains the molecular ion peak [M+H]⁺ or [M]⁺ using ESI or EI ionization sources to verify the molecular weight (theoretical value: 374.45 g/mol), assisting in structural identification. |
| Melting Point Determination | Capillary Melting Point Apparatus Method | Measures the temperature range at which the substance transitions from solid to liquid (literature value approximately 160–164°C), serving as a physical constant for preliminary assessment of purity and consistency. |
| Moisture Content | Karl Fischer Titration | Utilizes the quantitative reaction of iodine with water to accurately determine trace moisture content, ensuring the product's dryness meets storage and reaction requirements. |
| Residual Solvents | Gas Chromatography (GC) | Employs headspace or direct injection methods with an FID detector to separate and quantify organic solvents such as methanol, ethanol, and chloroform that may remain from the synthesis process. |
| Heavy Metal Limits | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | Performs trace detection of toxic metal elements such as lead, cadmium, mercury, and arsenic, ensuring compliance with pharmacopoeia or industrial safety standards (e.g., <10 ppm). |
| Appearance and Color | Visual Color Comparison Method | Observes the solid form (typically white to off-white crystalline powder) and any abnormal discoloration under standard lighting conditions to provide a preliminary assessment of contamination or degradation. |
| Infrared Spectral Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Collects infrared absorption spectra in the range of 4000–400 cm⁻¹ and compares characteristic functional group peaks (e.g., C-O-C ether bond, aromatic ring skeletal vibrations) with reference standards for rapid identification. |
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 116–120 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| 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.