Industrial Grade White Crystal Potassium Dihydrogen Phosphate for Chemical Industry
| Attribute | Value |
|---|---|
| CAS | 7778-77-0 |
| EINECS | 7778-77-0 |
| Appearance | White crystal particle |
| Crystalline hydrate | Anhydrous crystals |
| Life span | Two years |
| Chemical formula | KH₂PO₄ |
| Solubility | Dissolve in water |
Industrial Grade White Crystal Potassium Dihydrogen Phosphate (KH₂PO₄) for Chemical Industry applications.
- Products: Potassium dihydrogen phosphate/MKP
- Molecular formula: KH₂PO₄
- Molecular weight: 136.09
- Industrial grade 98% CAS 7778-77-0
- Fertilizer (Agricultural/Medicine) grade 98% CAS 7778-77-0
| Analysis | Test Method | Standard Request |
|---|---|---|
| MKP (KH₂PO₄) content % | HG/T 4511-2013 | ≥98% |
| Water insoluble % | HG/T 4511-2013 | ≤0.3% |
| PH value (10g/mL) | HG/T 4511-2013 | 4.4～4.6 |
| Chloride (as Cl) ppm | HG/T 4511-2013 | <0.79% |
| Arsenic (as As) ppm | HG/T 4511-2013 | <0.005% |
| Moisture | HG/T 4511-2013 | <0.48% |
| Lead (as Pb) ppm | HG/T 4511-2013 | <4 |
| Loss on drying % | HG/T 4511-2013 | <1 |
| P₂O₅ (water-soluble) % | HG/T 4511-2013 | ≥52.1 |
| K₂O (water-soluble) % | HG/T 4511-2013 | ≥34.5 |
References: Riel Chemical Lab1&2, National public service platform for standards information.
| Molecular weight: 163.94 g/mol | Appearance: white crystalline or powdery solid |
| Odor: Odorless or slightly sulphide odor | Density: 1.62 g/cm³ (dodecahydrate, 20°C) |
| Melting point: approx. 73.4°C (dodecahydrate decomposition) | Chemical Safety: Unrestricted goods |
- Solubility: Water: easily soluble in water, aqueous solution is strongly alkaline (pH about 12); Organic solvent: insoluble in ethanol, and other organic solvents
- Hydrolysis reaction: Fully ionized in water to form phosphate ions and sodium ions
- Complexation: Form an insoluble precipitate with metal ions (e.g. Ca²⁺, Mg²⁺) for softening hard water
- Thermal stability: It decomposes when heated to high temperatures, forming sodium phosphate and oxygen
- Acid base: The aqueous solution is strongly basic and can react with acid to form phosphate
- Agriculture: High-efficiency phosphorus and potassium compound fertilizer for various crops; foliar fertilizer to enhance disease resistance
- industry: Quality improver, leavening agent, and fermentation aid for baked goods and beverages
- Pharmaceutical industry: Raw material for drugs supplementing phosphorus and potassium; pH buffer in drug formulations
- Chemical industry: Buffer for pH adjustment in electroplating and dyes; flame retardant component for plastics and rubber
- Water treatment: Corrosion inhibitor for pipes and equipment; pH regulator for water quality
- Step Lab: Standard reagent for buffer solutions in biochemical and molecular biology research
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