04243

Kaliumphosphat

meets analytical specification of Ph. Eur., NF, E340, anhydrous, 98-100.5% (calc. to the dried substance)

• Synonym(e): Kaliumdihydrogenphosphat, Monokaliumphosphat, prim.-Kaliumphosphat
• Lineare Formel: KH₂PO₄
• CAS-Nummer: 7778-77-0
• Molekulargewicht: 136.09
• EG-Nummer: 231-913-4
• MDL-Nummer: MFCD00011401
• UNSPSC-Code: 12161700
• eCl@ss: 38070209
• PubChem Substanz-ID: 329747897
• NACRES: NA.25

Eigenschaften

• Qualität: anhydrous; meets analytical specification of Ph. Eur., NF, E340
• Qualitätsniveau: 200
• Assay: 98-100.5% (calc. to the dried substance)
• Form: crystalline
• Verunreinigungen: org. volatile impurities, complies (GC); residual solvents, complies; ≤0.001% heavy metals (as Pb); ≤0.04% KMnO₄ red. matter (as O); ≤0.2% in water insoluble matters
• Verlust: ≤1% loss on drying, 130 °C
• pH-Wert: 4.2-4.5 (20 °C, 5%)
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• mp (Schmelzpunkt): 252.6 °C (lit.)
• Löslichkeit: H₂O: soluble 4.5 parts; alcohol: insoluble
• Dichte: 2.338 g/mL at 25 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤10 mg/kg; fluoride (F^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• Kationenspuren: As: ≤2 mg/kg; Cd: ≤1 mg/kg; Cu: ≤20 mg/kg; Fe: ≤10 mg/kg; Hg: ≤1 mg/kg; Na: ≤1000 mg/kg; Pb: ≤4 mg/kg; Zn: ≤20 mg/kg
• Eignung: complies for appearance of solution
• SMILES String: [K+].OP(O)([O-])=O
• InChI: 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
• InChIKey: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Beschreibung

Anwendung

Potassium phosphate monobasic was used for separating tobacco protein by using aqueous two-phase extraction.

Biochem./physiol. Wirkung

Potassium phosphate monobasic also referred to as monopotassium phosphate or potassium dihydrogen phosphate is a soluble salt of potassium that serves as a buffering agent. It enhances the solubility of calcium and phosphorus in amino acid plus dextrose solutions and hence assists in improving the mineral balance of parenterally fed low birth weight infants.

Angaben zur Herstellung

Potassium phosphate monobasic dissolves in 4.5 (approx.) parts of water to yield a solution. It is practically insoluble in alcohol.

Sicherheitshinweise

• Lagerklassenschlüssel: 13 - Non Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable