Sodium phosphate dibasic

• Catalog No.: 71640
• CAS Number: 7558-79-4
• M. F.: HNa2O4P
• M. W.: 141.958841
• Purity: ≥99.0% (T)

SYNONYMS

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

DATABASE IDS

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

PROPERTIES

• Antion Traces: chloride (Cl-): ≤10 mg/kg
• Antion Traces: sulfate (SO42-): ≤50 mg/kg
• Cation Traces: Ca: ≤10 mg/kg
• Cation Traces: Cd: ≤5 mg/kg
• Cation Traces: Co: ≤5 mg/kg
• Cation Traces: Cr: ≤5 mg/kg
• Cation Traces: Cu: ≤5 mg/kg
• Cation Traces: Fe: ≤5 mg/kg
• Cation Traces: K: ≤50 mg/kg
• Cation Traces: Mg: ≤5 mg/kg
• Cation Traces: Mn: ≤5 mg/kg
• Cation Traces: Ni: ≤5 mg/kg
• Cation Traces: Pb: ≤5 mg/kg
• Cation Traces: Zn: ≤5 mg/kg
• Grade: ACS reagent
• Grade: puriss. p.a.
• Impurities: ≤0.001% total nitrogen (N)
• Linear Formula: Na2HPO4
• Loss on Drying: ≤0.2% loss on drying, 105 °C
• Purity: ≥99.0% (T)
• pKa: (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25°C)
• pH: 8.7-9.3 (25 °C, 50 mg/mL in H2O)
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: WC4500000
• German water hazard class: 1