04243

Fosfato di potassio

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

• Sinonimo/i: Fosfato di potassio prim., Fosfato monopotassico, Potassio diidrogeno fosfato
• Formula condensata: KH₂PO₄
• Numero CAS: 7778-77-0
• Peso molecolare: 136.09
• Numero CE: 231-913-4
• Numero MDL: MFCD00011401
• Codice UNSPSC: 12161700
• eCl@ss: 38070209
• ID PubChem: 329747897
• NACRES: NA.25

Proprietà

• Grado: anhydrous
• Livello qualitativo: 200
• Saggio: 98-100.5% (calc. to the dried substance)
• Forma fisica: crystalline
• Qualità: meets analytical specification of Ph. Eur., NF, E340
• Impurezze: 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
• Perdita: ≤1% loss on drying, 130 °C
• pH: 4.2-4.5 (20 °C, 5%)
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• Punto di fusione: 252.6 °C (lit.)
• Solubilità: H₂O: soluble 4.5 parts; alcohol: insoluble
• Densità: 2.338 g/mL at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤10 mg/kg; fluoride (F^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• Cationi in tracce: 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
• Compatibilità: complies for appearance of solution
• Stringa SMILE: [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; GNSKLFRGEWLPPA-UHFFFAOYSA-M

Descrizione

Applicazioni

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

Azioni biochim/fisiol

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.

Nota sulla preparazione

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable