Potassium phosphate monobasic
Biological Activity
Commonly used in biological assay buffers.
Technical Data
| M. Wt | 136.09 |
| Formula | KH2PO4 |
| Storage | Store at RT |
| Purity | ≥98% |
| CAS Number | 7778-77-0 |
| PubChem ID | 516951 |
| InChI Key | GNSKLFRGEWLPPA-UHFFFAOYSA-M |
| Smiles | O=P(O[O])=O.[KH2] |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Solubility Data
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| water | 40.83 | 300 |
Preparing Stock Solutions
The following data is based on the product molecular weight 136.09. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 3 mM | 2.45 mL | 12.25 mL | 24.49 mL |
| 15 mM | 0.49 mL | 2.45 mL | 4.9 mL |
| 30 mM | 0.24 mL | 1.22 mL | 2.45 mL |
| 150 mM | 0.05 mL | 0.24 mL | 0.49 mL |
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Potassium phosphate monobasic was used to make 1L of 1 M potassium phosphate buffer (pH maintained at 7.4) Works ideally and will use again.
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