795496

Fosfato di potassio

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

• Sinonimo/i: Idrogenofosfato di potassio, Potassio fosfato bibasico, sec.-Fosfato di potassio
• Formula condensata: K₂HPO₄
• Numero CAS: 7758-11-4
• Peso molecolare: 174.18
• Numero CE: 231-834-5
• Numero MDL: MFCD00011383
• Codice UNSPSC: 12352302
• ID PubChem: 329768488
• NACRES: NA.21

Proprietà

• Grado: ACS reagent; anhydrous
• Livello qualitativo: 200
• agenzia: suitable for SM 5210
• Nome Commerciale: Redi-Dri^™
• Saggio: ≥98%
• Forma fisica: powder
• Qualità: free-flowing
• Impurezze: ≤0.001% Nitrogen compounds (as N); ≤0.01% Insoluble matter
• Perdita: ≤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)
• Anioni in tracce: chloride (Cl^-): ≤0.003%; sulfate (SO₄^2-): ≤0.005%
• Cationi in tracce: Fe: ≤0.001%; Na: ≤0.05%; heavy metals: ≤5 ppm (by ICP-OES)
• Stringa SMILE: [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; ZPWVASYFFYYZEW-UHFFFAOYSA-L

Descrizione

Descrizione generale

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.

Applicazioni

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

Caratteristiche e vantaggi

• 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

Note legali

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable