Potassium phosphate monobasic

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Cat.No. 3150 - Potassium phosphate monobasic | KH2PO4 | CAS No. 7778-77-0
Description: Commonly used in biological assay buffers
Chemical Name: Potassium dihydrogen phosphate
Purity: ≥98%
Reviews (1)

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
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
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.

Select a batch to recalculate based on the batch molecular weight:
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

Molarity Calculator

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*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

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Product Datasheets

Certificate of Analysis / Product Datasheet
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Used to make cell culture buffer: Works well and would use again.
By Anonymous on 02/11/2019
Species: Human

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.