dipotassium trihydrate hydrogen phosphate

• ChemBase ID: 132907
• Molecular Formular: H7K2O7P
• Molecular Mass: 228.221741
• Monoisotopic Mass: 227.92035255
• SMILES: O.O.O.OP(=O)([O-])[O-].[K+].[K+]
• Canonical SMILES: [O-]P(=O)(O)[O-].O.O.O.[K+].[K+]
• InChI: InChI=1S/2K.H3O4P.3H2O/c;;1-5(2,3)4;;;/h;;(H3,1,2,3,4);3*1H2/q2*+1;;;;/p-2
• InChIKey: XQGPKZUNMMFTAL-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: dipotassium trihydrate hydrogen phosphate
• IUPAC Traditional name: dipotassium trihydrate hydrogen phosphate
• Synonyms: Potassium hydrogen phosphate trihydrate, Reagent Grade; Dipotassium phosphate; Dipotassium hydrogen phosphate trihydrate; Potassium phosphate dibasic trihydrate; sec.-Potassium phosphate; Potassium hydrogenphosphate trihydrate; Potassium phosphate dibasic solution; Potassium phosphate dibasic trihydrate; di-Potassium hydrogen phosphate trihydrate; 磷酸氢钾三水合物, 试剂级; 无水磷酸氢二钾; 磷酸钾 二元 三水合物; 磷酸氢钾 三水合物; 磷酸氢二钾; 磷酸钾 二元 溶液; 无水磷酸氢二钾 三水合物; 磷酸二钾; 磷酸氢二钾 三水合物; 磷酸钾 二元 三水合物

Database IDs

• CAS Number: 7758-11-4; 16788-57-1
• EC Number: 231-834-5; 231-791-2
• MDL Number: MFCD00149926
• Merck Index: 147658
• PubChem SID: 24898660; 162227184; 24899052; 24881845; 24898955
• PubChem CID: 16217523

CALCULATED PROPERTIES

• Acid pKa: 1.7961261
• H Acceptors: 4
• H Donor: 1
• LogD (pH = 5.5): -3.3916447
• LogD (pH = 7.4): -3.9718332
• Log P: -1.0201038
• Molar Refractivity: 12.4085 cm^3
• Polarizability: 5.685633 Å^3
• Polar Surface Area: 83.42 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: H2O: soluble3 M at 20 °C, clear, colorless; H2O: soluble4 M at 20 °C, clear, colorless
• Apperance: Crystalline
• Absorption Wavelength: λ: 260 nm Amax: 0.2; λ: 260 nm Amax: 0.20; λ: 280 nm Amax: 0.15
• pH: 9.0-10.0 (25 °C, 3 M in H2O); 9.0-10.0 (25 °C, 4 M in H2O); 9.1-9.4 (25 °C, 50 mg/mL in H2O)

Safety Information

• Storage Warning: Hygroscopic
• German water hazard class: 3
• TSCA Listed: 是
• Personal Protective Equipment: Eyeshields, Gloves; Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US); Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥99%; ≥99.0%; ≥99.0% (T)
• Concentration: 1.0 M; 3 M in H2O; 4 M in H2O
• Grade: for molecular biology; puriss. p.a.; ReagentPlus®
• Impurities: ≤0.001% total nitrogen (N); insoluble matter, passes filter test
• Cation Traces: Al: ≤1 mg/kg; As: ≤0.1 mg/kg; Ba: ≤1 mg/kg; Bi: ≤1 mg/kg; Ca: ≤1 mg/kg; Ca: ≤10 mg/kg; Ca: ≤5 mg/kg; Cd: ≤1 mg/kg; Cd: ≤5 mg/kg; Co: ≤1 mg/kg; Co: ≤5 mg/kg; Cr: ≤1 mg/kg; Cr: ≤5 mg/kg; Cu: ≤1 mg/kg; Cu: ≤5 mg/kg; Fe: ≤1 mg/kg; Fe: ≤10 ppm; Fe: ≤5 mg/kg; heavy metals (as Pb): ≤5 ppm; Li: ≤1 mg/kg; Mg: ≤1 mg/kg; Mg: ≤5 mg/kg; Mn: ≤1 mg/kg; Mn: ≤5 mg/kg; Mo: ≤1 mg/kg; Na: ≤2000 mg/kg; Na: ≤500 mg/kg; Ni: ≤1 mg/kg; Ni: ≤5 mg/kg; Pb: ≤1 mg/kg; Pb: ≤5 mg/kg; Sr: ≤1 mg/kg; Zn: ≤1 mg/kg; Zn: ≤5 mg/kg
• Antion Traces: chloride (Cl-): ≤20 mg/kg; chloride (Cl-): ≤30 ppm; chloride (Cl-): ≤50 mg/kg; sulfate (SO42-): ≤50 mg/kg
• Foreign Activity: DNase, RNase and protease, none detected
• Sterility: 0.2 μm filtered
• λ: 3 M in H2O; 4 M in H2O
• Product Line: BioUltra
• Linear Formula: K2HPO4 · 3H2O
• Empirical Formula (Hill Notation): HK2O4P

DETAILS

Sigma Aldrich - P8584

Application
制备磷酸盐缓冲液的便捷储存液

Sigma Aldrich - P5504

Packaging
1 kg in poly bottle
100, 500 g in poly bottle
5, 10 kg in poly drum
Legal Information
ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC