795496

Potassium phosphate dibasic

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

• 동의어(들): Dipotassium hydrogenphosphate, Dipotassium phosphate, sec.-Potassium phosphate
• Linear Formula: K₂HPO₄
• CAS Number: 7758-11-4
• Molecular Weight: 174.18
• EC Number: 231-834-5
• MDL number: MFCD00011383
• UNSPSC 코드: 12352302
• PubChem Substance ID: 329768488
• NACRES: NA.21

속성

• Grade: ACS reagent; anhydrous
• Quality Level: 200
• Agency: suitable for SM 5210
• 제품 라인: Redi-Dri^™
• 분석: ≥98%
• 양식: powder
• 품질: free-flowing
• 불순물: ≤0.001% Nitrogen compounds (as N); ≤0.01% Insoluble matter
• 손실: ≤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)
• 음이온 미량물: chloride (Cl^-): ≤0.003%; sulfate (SO₄^2-): ≤0.005%
• 양이온 미량물: Fe: ≤0.001%; Na: ≤0.05%; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES string: [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
• InChI key: ZPWVASYFFYYZEW-UHFFFAOYSA-L

설명

일반 설명

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.

애플리케이션

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

특징 및 장점

• 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

법적 정보

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

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable