Potassium phosphate monobasic

• Catalog No.: 04243
• CAS Number: 7778-77-0
• M. F.: H2KO4P
• M. W.: 136.085541
• Purity: 98-100.5% (calc. to the dried 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

• CAS Number: 7778-77-0
• MDL Number: MFCD00011401
• EC Number: 231-913-4
• PubChem SID: 24845701

PROPERTIES

• Antion Traces: chloride (Cl-): ≤10 mg/kg
• Antion Traces: fluoride (F-): ≤10 mg/kg
• Antion Traces: sulfate (SO42-): ≤200 mg/kg
• Cation Traces: As: ≤2 mg/kg
• Cation Traces: Cd: ≤1 mg/kg
• Cation Traces: Cu: ≤20 mg/kg
• Cation Traces: Fe: ≤10 mg/kg
• Cation Traces: Hg: ≤1 mg/kg
• Cation Traces: Na: ≤1000 mg/kg
• Cation Traces: Pb: ≤4 mg/kg
• Cation Traces: Zn: ≤20 mg/kg
• Impurities: org. volatile impurities, complies (GC)
• Impurities: residual solvents, complies
• Impurities: ≤0.001% heavy metals (as Pb)
• Impurities: ≤0.04% KMnO4 red. matter (as O)
• Impurities: ≤0.2% in water insoluble matters
• Linear Formula: KH2PO4
• Loss on Drying: ≤1% loss on drying, 130 °C
• Purity: 98-100.5% (calc. to the dried substance)
• Quality: meets analytical specification of Ph. Eur., NF, E340
• Suitability: complies 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