Potassium phosphate dibasic
SIAL/795496 - anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥98%
Synonym: Dipotassium hydrogenphosphate; Dipotassium phosphate; sec.-Potassium phosphate
CAS Number: 7758-11-4
Empirical Formula (Hill Notation): HK2O4P
Molecular Weight: 174.18
EC Number: 231-834-5
MDL Number: MFCD00011383
Linear Formula: K2HPO4
Product Type: Chemical
Free-flowing salts
Loss on Drying Graph
Redi-Dri free-flowing salts
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: 795496-100G
This image depicts SKU: 795496-100G
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: 795496-500G
This image depicts SKU: 795496-500G
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This image depicts SKU: 795496-1KG
This image depicts SKU: 795496-1KG
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This image depicts SKU: 795496-2.5KG
This image depicts SKU: 795496-2.5KG
| agency | suitable for SM 5210 |
| anion traces | chloride (Cl-): ≤0.003% |
| sulfate (SO42-): ≤0.005% | |
| assay | ≥98% |
| cation traces | Fe: ≤0.001% |
| heavy metals: ≤5 ppm (by ICP-OES) | |
| Na: ≤0.05% | |
| form | powder |
| grade | ACS reagent |
| anhydrous | |
| impurities | ≤0.001% Nitrogen compounds (as N) |
| ≤0.01% Insoluble matter | |
| InChI | 1S/2K.H3O4P/c;;1-5(2,3)4/ |
| InChI key | ZPWVASYFFYYZEW-UHFFFAOYSA |
| loss | ≤1.0% loss on drying, 105°C |
| pH | 8.5-9.6 (25 °C, 5% in solution) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| product line | Redi-Dri™ |
| quality | free-flowing |
| Quality Level | 200  |
| SMILES string | [K+].[K+].OP([O-])([O-])= |
| solubility | water: soluble |
| Application: | Potassium phosphate dibasic has been used in the preparation of MMG (maltose, methyl green) medium, phosphate buffered saline and hypotonic solution. |
| Features and Benefits: | • Increased efficiency – Eliminate time and effort of loosening hardened powders • Safety – Avoid risks of using tools of force to break up clumps • Economy – Faster preparation and solvation increase productivity and reduce costs • Assured quality – Excellent, expert-tested quality with no anti-caking agents • Flexible volumes – Available from research amounts to scale-up quantities |
| General description: | Potassium phosphate dibasic is a useful biological buffer having a pH in the range of 8.5–9.6. Potassium phosphate is present in various forms: monobasic (KH2PO4), dibasic (KH2PO4), and tribasic (K3PO4). Potassium phosphate buffers are widely employed in equilibrium dialysis, high performance liquid chromatography (HPLC) and affinity capillary electrophoresis studies. |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 1, 2.5 kg in poly bottle |
| Packaging: | 100, 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 | ≥98% |
| UNSPSC | 12352302 |