Sodium phosphate dibasic

• Catalog No.: S7907
• CAS Number: 7558-79-4
• M. F.: HNa2O4P
• M. W.: 141.958841
• Purity: ≥99.0%

SYNONYMS

• Title: 磷酸钠 二元
• IUPAC name: disodium hydrogen phosphate
• IUPAC Traditional name: disodium hydrogen phosphate
• Synonyms: 磷酸二钠; 磷酸氢二钠; 二盐基磷酸钠; 磷酸一氢钠

DATABASE IDS

• EC Number: 231-448-7
• CAS Number: 7558-79-4
• PubChem SID: 24899769
• MDL Number: MFCD00003496

PROPERTIES

• Antion Traces: chloride (Cl-): ≤0.05%
• Antion Traces: sulfate (SO42-): ≤0.05%
• Cation Traces: Al: ≤0.0005%
• Cation Traces: Ca: ≤0.002%
• Cation Traces: Cu: ≤0.0005%
• Cation Traces: Fe: ≤0.002%
• Cation Traces: K: ≤0.005%
• Cation Traces: Mg: ≤0.005%
• Cation Traces: NH4+: ≤0.05%
• Cation Traces: Pb: ≤0.001%
• Cation Traces: Zn: ≤0.0005%
• Impurities: ≤0.1% Insoluble matter
• Purity: ≥99.0%
• Absorption Wavelength: A1M/260, H2O <0.05
• Absorption Wavelength: A1M/280, H2O <0.05
• pKa: (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• pH: 8.0-11.0 (20 °C, 1 M in H2O)
• Solubility: H2O: soluble1 M at 20 °C, clear, colorless
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: WC4500000
• German water hazard class: 1