China Factory Direct
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| CAS number | 4409-98-7 |
| Product name | DI-POTASSIUM PHTHALATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeReagent GradeCosmetic GradeFood 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 |
|---|---|---|
| Food Industry | Acidity regulator, stabilizer | Used in food processing to adjust pH and maintain product stability; commonly applied in beverages, jams, and canned foods |
| Pharmaceutical Industry | Buffering agent, pharmaceutical excipient | Employed as a pH buffer in drug formulations to enhance drug stability and solubility |
| Chemical Reagents | Analytical reagent, standard solution preparation | Utilized in laboratories for preparing standard buffer solutions for pH calibration or titration analysis |
| Household Chemicals | Detergent additive | Applied as a stabilizer in surfactant systems to improve cleaning performance and storage stability of detergent products |
| Textile Industry | Dyeing auxiliary | Used during dyeing to control bath pH, thereby improving dye fixation and color uniformity |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (purity) | Acid-base titration | Quantifies active ingredient by titration with standardized NaOH solution using phenolphthalein indicator. |
| Moisture content | Karl Fischer titration | Measures water content via coulometric or volumetric reaction between water and iodine in pyridine/methanol medium. |
| Heavy metals (as Pb) | Atomic absorption spectroscopy (AAS) | Determines total heavy metal content by measuring absorbance of ground-state atoms in flame or graphite furnace. |
| Sulfate impurity | Gravimetric analysis | Precipitates sulfate as BaSO4 and quantifies by weighing the dried precipitate. |
| Chloride impurity | Potentiometric titration | Titrates chloride with silver nitrate using silver electrode to detect endpoint potential change. |
| Iron content | UV-Vis spectrophotometry | Measures Fe2+ complex with 1,10-phenanthroline at 510 nm after reduction and chelation. |
| Loss on drying | Thermogravimetric analysis (TGA) | Determines volatile content by measuring mass loss upon heating to 105 C under controlled atmosphere. |
| pH of aqueous solution | pH meter measurement | Measures hydrogen ion activity in a 1% w/v aqueous solution using calibrated glass electrode. |
| Residue on ignition | Weight loss on ignition | Quantifies inorganic ash content by ignition at 700-800 C followed by gravimetric determination. |
| Specific optical rotation | Polarimetry | Measures rotation of plane-polarized light in solution to confirm chiral purity and identity. |
| Organic impurities | High-performance liquid chromatography (HPLC) | Separates and quantifies related substances using reversed-phase C18 column and UV detection. |
| Particle size distribution | Laser diffraction | Analyzes particle size by measuring angular variation in intensity of scattered laser light. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 295-300°C (decomposes) |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Total Impurities | <=2.0% (HPLC) |
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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.