795496

Phosphate de potassium dibasic

anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥98%

• Synonyme(s) : Dipotassium phosphate, Hydrogénophosphate dipotassique, sec.-Phosphate de potassium
• Formule linéaire : K₂HPO₄
• Numéro CAS: 7758-11-4
• Poids moléculaire : 174.18
• Numéro CE : 231-834-5
• Numéro MDL: MFCD00011383
• Code UNSPSC : 12352300
• ID de substance PubChem : 329768488

Propriétés

• Qualité: ACS reagent; anhydrous; free-flowing
• Niveau de qualité: 200
• Agence: suitable for SM 5210
• Gamme de produits: Redi-Dri^™
• Pureté: ≥98%
• Forme: powder
• Impuretés: ≤0.001% Nitrogen compounds (as N); ≤0.01% Insoluble matter
• Perte: ≤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)
• Traces d'anions: chloride (Cl^-): ≤0.003%; sulfate (SO₄^2-): ≤0.005%
• Traces de cations: Fe: ≤0.001%; Na: ≤0.05%; heavy metals: ≤5 ppm (by ICP-OES)
• Chaîne SMILES: [K+].[K+].OP([O-])([O-])=O
• InChI: 1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
• Clé InChI: ZPWVASYFFYYZEW-UHFFFAOYSA-L

Description

Description générale

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.

Application

Potassium phosphate dibasic has been used in the preparation of MMG (maltose, methyl green) medium, phosphate buffered saline and hypotonic solution.

Caractéristiques et avantages

• 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

Informations légales

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable