China Factory Direct
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| CAS number | 56211-70-2 |
| Product name | Tetrapropylammonium bisulfate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 | Facilitates dissolution and reaction of ionic reagents in the organic phase during Williamson ether synthesis, alkylation, esterification, and related reactions |
| Pharmaceutical Intermediate Synthesis | Chiral resolution aid | Serves as a precursor or auxiliary reagent for chiral quaternary ammonium salt-based phase-transfer catalysts in asymmetric synthesis |
| Materials Science | Surface modifier for nanomaterial preparation | Controls morphology and dispersion of metal oxide nanoparticles (e.g., TiO₂, ZnO) by electrostatic adsorption to stabilize colloidal systems |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with Standardized NaOH | Quantifies tetrapropylammonium hydrogen sulfate by titrating the acidic proton with standardized sodium hydroxide using phenolphthalein or potentiometric endpoint detection. |
| Water Content | Karl Fischer Coulometric Titration | Determines trace water content electrochemically via iodine generation and stoichiometric reaction with water in anhydrous methanol-based solvent. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Measures non-volatile inorganic impurities by heating sample to 700–800 °C and weighing residual ash after complete organic matrix decomposition. |
| Heavy Metals (as Pb) | ICP-OES | Quantifies total heavy metal content (e.g., Pb, Cd, Hg, As) by plasma excitation and elemental emission spectroscopy after acid digestion. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride anions using anion-exchange column with suppressed conductivity detection. |
| Organic Impurities (Related Substances) | HPLC with UV Detection | Separates and detects structurally related organic impurities (e.g., tripropylamine, propyl bromide derivatives) using reversed-phase C18 column and UV absorbance at 200–220 nm. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity based on sharpness and agreement with literature value (~125–128 °C). |
| Appearance & Color | Visual Inspection against Standard Solutions | Assesses physical state (white to off-white crystalline powder) and absence of discoloration or foreign particles under controlled lighting. |
| pH (1% Aqueous Solution) | pH Meter with Calibrated Electrode | Measures hydrogen ion activity in aqueous solution; reflects hydrolytic stability and presence of acidic/basic degradation products. |
| Sulfate Content | Barium Sulfate Gravimetric Method | Precipitates sulfate as BaSO₄ under controlled acidity and temperature, followed by filtration, drying, and weighing of pure precipitate. |
| Residual Solvents (e.g., Methanol, Acetone) | Gas Chromatography (GC-FID) | Quantifies volatile organic solvents using capillary column separation and flame ionization detection with internal standard calibration. |
| Microbial Contamination | Membrane Filtration and Plate Count | Detects aerobic mesophilic microorganisms by filtration, membrane transfer to nutrient agar, and colony enumeration after incubation (if applicable for non-sterile grade). |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 128-132°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic, faint ammoniacal |
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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.