Potassium phosphate monobasic

• Catalog No.: 30407
• CAS Number: 7778-77-0
• M. F.: H2KO4P
• M. W.: 136.085541
• Purity: 99.5-100.5% (calc. on dry substance)

SYNONYMS

• Title: 磷酸钾 一元
• IUPAC name: potassium dihydrogen phosphate
• IUPAC Traditional name: potassium dihydrogen phosphate
• Synonyms: prim.-Potassium phosphate; Potassium dihydrogen phosphate; 无水磷酸二氢钾; Monopotassium phosphate; 磷酸一钾; 磷酸二氢钾

DATABASE IDS

• PubChem SID: 24858321
• CAS Number: 7778-77-0
• MDL Number: MFCD00011401
• EC Number: 231-913-4

PROPERTIES

• Antion Traces: chloride (Cl-): ≤5 mg/kg
• Antion Traces: sulfate (SO42-): ≤30 mg/kg
• Cation Traces: As: ≤0.5 mg/kg
• Cation Traces: Fe: ≤5 mg/kg
• Cation Traces: Na: ≤200 mg/kg
• Grade: reag. ISO, reag. Ph. Eur.
• Grade: puriss. p.a.
• Impurities: KMnO4 red. Matter (as O), complies
• Impurities: ≤0.0005% heavy metals (as Pb)
• Impurities: ≤0.001% total nitrogen (N)
• Linear Formula: KH2PO4
• Loss on Drying: ≤0.2% loss on drying, 130 °C
• Purity: 99.5-100.5% (calc. on dry substance)
• Suitability: in accordance for appearance of solution
• pKa: (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25°C)
• Density: 2.338 g/mL at 25 °C(lit.)
• Melting Point: 252.6 °C(lit.)
• pH: 4.2-4.5 (20 °C, 5%)
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: TC6615500
• German water hazard class: 2