795496

Fosfato de potássio

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

• Sinônimo(s): Fosfato dipotássico, Hidrogenofosfato dipotássico, Sec.-fosfato de potássio
• Fórmula linear: K₂HPO₄
• Número CAS: 7758-11-4
• Peso molecular: 174.18
• Número CE: 231-834-5
• Número MDL: MFCD00011383
• Código UNSPSC: 12352302
• ID de substância PubChem: 329768488
• NACRES: NA.21

Propriedades

• grau: ACS reagent; anhydrous
• Nível de qualidade: 200
• Agency: suitable for SM 5210
• linha de produto: Redi-Dri^™
• Ensaio: ≥98%
• Formulário: powder
• qualidade: free-flowing
• Impurezas: ≤0.001% Nitrogen compounds (as N); ≤0.01% Insoluble matter
• perda: ≤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)
• traços de ânion: chloride (Cl^-): ≤0.003%; sulfate (SO₄^2-): ≤0.005%
• traços de cátion: Fe: ≤0.001%; Na: ≤0.05%; heavy metals: ≤5 ppm (by ICP-OES)
• cadeia de caracteres 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
• chave InChI: ZPWVASYFFYYZEW-UHFFFAOYSA-L

Descrição

Descrição geral

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.

Aplicação

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

Características e benefícios

• 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

Informações legais

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

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable