China Factory Direct
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| CAS number | 665-46-3 |
| Product name | Tetraethylammonium fluoride dihydrate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeElectronic GradeReagent 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 |
|---|---|---|
| Organic Synthesis | Phase-transfer catalyst | Applied to facilitate reactions between organic and aqueous phases, enhancing reaction rate and selectivity |
| Semiconductor Manufacturing | Cleaning agent | Applied in wafer surface cleaning and etching processes to remove metallic impurities and oxide layers |
| Chemical Analysis | Fluorinating reagent | Applied as a fluorine source in mass spectrometry for derivatization to improve detection sensitivity |
| Materials Science | Surface treatment agent | Applied for surface modification of nanomaterials to enhance dispersion and colloidal stability |
| Pharmaceutical Industry | Intermediate synthesis | Applied in the construction of fluorinated drug molecules as a fluoride ion donor in nucleophilic substitution reactions |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (TEFA content) | Acid-Base Titration with Standardized HCl | Quantifies tetraethylammonium fluoride by back-titration after reaction with excess standardized HCl. |
| Water Content | Karl Fischer Coulometric Titration | Measures total water (including hydrate water) via electrochemical iodine generation and stoichiometric reaction with water. |
| Fluoride Ion Purity | Ion Chromatography (IC) with Conductivity Detection | Separates and quantifies F- anion using anion-exchange column and conductivity detection; suppresses background conductivity. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Detects trace heavy metals by plasma ionization followed by mass spectrometric quantification at element-specific m/z ratios. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Determines Cl- concentration via precipitation titration using silver nitrate and a silver indicator electrode. |
| Sulfate Impurity | Gravimetric Analysis as BaSO4 | Precipitates sulfate as barium sulfate, followed by filtration, drying, and weighing of the insoluble residue. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by ignition at 600 C and weighing the residual ash. |
| pH of Aqueous Solution | pH Meter Measurement | Determines hydrogen ion activity in a defined aqueous solution (e.g., 1% w/v) using calibrated glass electrode. |
| Appearance and Color | Visual Inspection against Standard Solutions | Assesses physical state, clarity, and color by comparison to water and platinum-cobalt standards under controlled lighting. |
| Organic Impurities (Tetraethylammonium hydroxide, diethyl ether) | Gas Chromatography (GC-FID) | Separates and quantifies volatile organic impurities using capillary column and flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Measures particle size distribution in suspension via angular analysis of scattered laser light intensity. |
| Bulk Density | Tap Density Measurement | Determines mass per unit volume after controlled mechanical tapping of a known powder mass in a graduated cylinder. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Melting Point | 65-70°C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.