Potassium phosphate monobasic
SIGALD/P0662 - ACS reagent, ≥99.0%
Synonym: Potassium dihydrogen phosphate; prim.-Potassium phosphate
CAS Number: 7778-77-0
Empirical Formula (Hill Notation): H2KO4P
Molecular Weight: 136.09
EC Number: 231-913-4
MDL Number: MFCD00011401
Linear Formula: KH2PO4
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: P0662-25G
This image depicts SKU: P0662-25G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: P0662-500G
This image depicts SKU: P0662-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: P0662-1KG
This image depicts SKU: P0662-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: P0662-2.5KG
This image depicts SKU: P0662-2.5KG
| agency | suitable for EPA 300 |
| suitable for SM 5210 | |
| anion traces | chloride (Cl-): ≤0.001% |
| sulfate (SO42-): ≤0.003% | |
| assay | ≥99.0% |
| bp | >450 °C |
| cation traces | Fe: ≤0.002% |
| heavy metals: ≤0.001% (by ICP) | |
| Na: ≤0.005% | |
| density | 2.338 g/mL at 25 °C (lit.) |
| form | powder or crystals |
| grade | ACS reagent |
| impurities | ≤0.01% Insoluble matter |
| InChI | 1S/K.H3O4P/c;1-5(2,3)4/h; |
| InChI key | GNSKLFRGEWLPPA-UHFFFAOYSA |
| loss | ≤0.2% loss on drying, 105°C |
| mp | 252.6 °C (lit.) |
| pH | 4.1-4.5 (25 °C, 5%) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| Quality Level | 200  |
| SMILES string | [K+].OP(O)([O-])=O |
| solubility | water: soluble (208 g/l at 20 °C (68 °F)) |
| technique(s) | tissue culture: suitable |
| Application: | Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS). It has also been used in the preparation of PEG1000 (poly ethylene glycol)/potassium phosphate aqueous two-phase systems (ATPS). |
| General description: | Potassium phosphate monobasic (monopotassium orthophosphate) is a water soluble inorganic salt. Its standard enthalpy of formation has been reported to be -376.1kcalmol-1. It acts a starting material in the synthesis of potassium metaphosphate. |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Other Notes: | Go to Redi-Dri™ Product Listing 795488 |
| Packaging: | 1, 2.5, 4×2.5 kg in poly bottle |
| Packaging: | 12 kg in poly drum |
| Packaging: | 25, 500, 6×500 g in poly bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% |
| bp | >450 °C |
| mp | 252.6 °C (lit.) |
| Density | 2.338 g/mL at 25 °C (lit.) |
| UNSPSC | 12352302 |