Anhydrous Potassium Dihydrogen Phosphate AR Grade CAS 7778-77-0 EC 231-913-4| Chemical Reagents net

It is a versatile chemical compound used primarily as a buffering agent in laboratories and as a nutrient in agriculture. It is important in various industries for its buffering and nutritional properties.

General Information

Name: Potassium Phosphate Monobasic
CAS Number: 7778-77-0
Molecular Weight: 136.08
Molecular Formula: KH2PO4
MDL Number: MFCD00011401
EC Number: 231-913-4
Potassium Phosphate Monobasic is a crystalline powder commonly used in laboratories and industries.

Brand and Packaging

Brand: KeShi Packaging: 500g × 20 bottles/case

Physical Properties

Appearance: White crystalline powder
Density: 2.338 g/cm³
Melting Point: 252°C (decomposes)
Solubility: Soluble in water; insoluble in ethanol.

Chemical Properties

Acidity (pKa): 7.2 (dihydrogen phosphate ion)
Reactivity: Stable under normal conditions; hygroscopic (absorbs moisture from the air).

   O
   ||
HO-P-OH
   |
   K

Quality inspection report

Quality inspection report

| Product Name           | Specification | Lot Number  | Molecular Formula | Molecular Weight | Lot Size | Inspection Unit | Sample Category | Report Date  | Inspection Basis   |
|------------------------|---------------|-------------|-------------------|------------------|----------|-----------------|-----------------|--------------|--------------------|
| Anhydrous Potassium Dihydrogen Phosphate | Analytical Grade | 2023120701 | KH2PO4            | 136.09           | 2500kg   | Production Unit | Inorganic       | 2023.12.09   | GB/T1274-2011      |

| Test Item               | Standard Requirement    | Test Result |
|-------------------------|-------------------------|-------------|
| Content,%               | 99.5～100.5             | 99.8        |
| Appearance              | Colorless crystals      | Colorless crystals |
| pH (50g/L, 25°C)        | 4.2～4.5                | 4.3         |
| Clarity Test            | ≤2                     | ＜2          |
| Insoluble Matter,%      | ≤0.002                  | 0.0009      |
| Chloride (Cl),%         | ≤0.001                  | ＜0.001     |
| Sulfate (SO4),%         | ≤0.003                  | ＜0.003     |
| Loss on Drying,%        | ≤0.2                    | 0.03        |
| Total Nitrogen (N),%    | ≤0.001                  | ＜0.001     |
| Sodium (Na),%           | ≤0.02                   | 0.01        |
| Arsenic (As),%          | ≤0.0005                 | ＜0.0005    |
| Iron (Fe),%             | ≤0.001                  | ＜0.001     |
| Heavy Metals (as Pb),%  | ≤0.001                  | ＜0.001     |

Analysis Conclusion:
Meets the standard requirements.

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