Potassium hydrogen phthalate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 877-24-7 |
| Product name | Potassium hydrogen phthalate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeReagent 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) |
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Documents We Provide for Potassium hydrogen phthalate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Potassium hydrogen phthalate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Potassium hydrogen phthalate
| Industry | Application | Process |
|---|---|---|
| Chemical Analysis | Preparation of pH standard buffer solutions | Used to prepare pH 4.01 standard buffer solutions as reference materials for pH meter calibration |
| Laboratory Research | Analytical reagent | Used as a primary standard in titration analysis for standardizing alkaline solutions |
| Pharmaceuticals | Pharmaceutical intermediate | Used in the synthesis of certain active pharmaceutical ingredients or as an excipient in drug formulations |
| Food Industry | Food additive (acidity regulator) | Approved for use in food products to adjust acidity and ensure product stability and taste |
| Materials Science | Component of buffer systems | Applied to maintain stable pH conditions during functional material synthesis |
Manufacturing Quality Control of Potassium hydrogen phthalate
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity (Main Component Content) | Non-aqueous Titration | High-performance perchloric acid standard solution is used in glacial acetic acid medium for titration, with crystal violet as indicator, to determine the content of acidic hydrogen in KHP, thereby calculating purity (typically required ≥ 99.95%). |
| Moisture Content | Karl Fischer Titration | Utilizes Karl Fischer reagent composed of iodine, sulfur dioxide, pyridine, and methanol to quantitatively react with water. Moisture is determined by potentiometric or visual endpoint detection, ensuring moisture ≤ 0.1%. |
| Residue on Ignition (Ash Content) | Ignition and Weighing Method | Sample is ignited at high temperature (500–600°C) until constant weight, measuring the percentage of residual inorganic matter to assess inorganic impurities; typically required ≤ 0.01%. |
| Chloride Content | Silver Nitrate Titration or Ion Chromatography | Chloride ions are titrated with silver nitrate standard solution to form silver chloride precipitate (via potentiometric or indicator method), or detected using ion chromatography for separation and quantification; chloride content controlled to ≤ 0.005%. |
| Sulfate Content | Turbidimetry (Barium Chloride Precipitation Method) | After sample acidification, barium chloride solution is added to generate a white barium sulfate precipitate. The turbidity is compared with a standard series for quantitative determination; typically required ≤ 0.005%. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Sample is digested and heavy metals such as lead, cadmium, and mercury are analyzed using AAS or inductively coupled plasma mass spectrometry (ICP-MS), complying with pharmacopeial limits (e.g., Pb ≤ 2 ppm). |
| Solution Clarity and Color | Visible Spectrophotometry or Visual Color Comparison | A KHP aqueous solution of specified concentration is prepared and its absorbance measured at 450 nm or 550 nm using a spectrophotometer, or visually compared with standard color solutions; ensures clear and colorless solution. |
| pH Value (Solution) | pH Meter Method | Prepare a 0.1 mol/L KHP aqueous solution and measure pH using a calibrated pH meter; standard value is 4.00–4.01 (at 25°C), used for verifying the reference standard for pH electrode calibration. |
| Melting Point | Melting Point Determination Instrument Method | Determined using capillary tube method or thermal analysis instrument; theoretical melting point is approximately 295–300°C (decomposes), used to detect impurities or decomposition. |
| Water Solubility | Solubility Test Method | Determine solubility of KHP in water at 25°C (approximately 80 g/100 mL), verifying dissolution performance and confirming absence of insoluble impurities. |
Technical Specifications of Potassium hydrogen phthalate
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | 98.5% - 99.5% (by titration) |
| Water Content (KF) | <=0.5% |
| Melting Point | 228°C - 232°C |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm (as Pb) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
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 Potassium hydrogen phthalate
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NMR Spectra of Potassium hydrogen phthalate
Packaging of Potassium hydrogen phthalate
Industrial Potassium hydrogen phthalate 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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