04243

Fosfato de potássio

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

• Sinônimo(s): Di-hidrogenofosfato de potássio, Fosfato de potássio prim., Fosfato monopotássico
• Fórmula linear: KH₂PO₄
• Número CAS: 7778-77-0
• Peso molecular: 136.09
• Número CE: 231-913-4
• Número MDL: MFCD00011401
• Código UNSPSC: 12161700
• eCl@ss: 38070209
• ID de substância PubChem: 329747897
• NACRES: NA.25

Propriedades

• grau: anhydrous
• Nível de qualidade: 200
• Ensaio: 98-100.5% (calc. to the dried substance)
• forma: crystalline
• qualidade: meets analytical specification of Ph. Eur., NF, E340
• Impurezas: 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
• perda: ≤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)
• pf: 252.6 °C (lit.)
• solubilidade: H₂O: soluble 4.5 parts; alcohol: insoluble
• densidade: 2.338 g/mL at 25 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤10 mg/kg; fluoride (F^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• traços de cátion: 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
• adequação: complies for appearance of solution
• cadeia de caracteres SMILES: [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
• chave InChI: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Descrição

Aplicação

Potassium phosphate monobasic was used for separating tobacco protein by using aqueous two-phase extraction.[1]

Ações bioquímicas/fisiológicas

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.[2]

Nota de preparo

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

Informações de segurança

• Código de classe de armazenamento: 13 - Non Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable