Buy 98% Potassium Dihydrogen Phosphate Recommended Buffer For Sewage Treatment
| Attribute | Value |
|---|---|
| CAS | 7778-77-0 |
| EINECS | 7778-77-0 |
| Appearance | White crystal particle |
| Crystalline hydrate | Anhydrous crystals |
| Density | 2.338 g/cm³ |
| Solubility | Dissolve in water |
| Life span | Two years |
98% Potassium Dihydrogen Phosphate (MKP) is a highly effective buffer solution recommended for sewage treatment applications.
- Product: 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: Easily soluble in water (aqueous solution is strongly alkaline, pH about 12); insoluble in ethanol and other organic solvents
- Hydrolysis reaction: Fully ionized in water to form phosphate ions and sodium ions
- Complexation: Forms insoluble precipitates with metal ions (e.g. Ca²+, Mg²+) for softening hard water
- Thermal stability: Decomposes when heated to high temperatures, forming sodium phosphate and oxygen
- Acid base: Aqueous solution is strongly basic and can react with acid to form phosphate
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