71640

Sodium phosphate dibasic

puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)

• Synonym(s): Sodium hydrogenphosphate, Disodium phosphate, Disodium hydrogen phosphate, sec-Sodium phosphate
• Linear Formula: Na₂HPO₄
• CAS Number: 7558-79-4
• Molecular Weight: 141.96
• Número de EC: 231-448-7
• Número MDL: MFCD00003496
• eCl@ss: 38070211
• ID de la sustancia en PubChem: 329763389
• NACRES: NA.21

Properties

• Nivel de calidad: 200
• grado: ACS reagent; puriss. p.a.
• ensayo: ≥99.0% (T)
• formulario: powder (or crystals)
• impurezas: ≤0.001% total nitrogen (N)
• pérdida: ≤0.2% loss on drying, 105 °C
• pH: 8.7-9.3 (25 °C, 50 mg/mL in H₂O)
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• trazas de anión: chloride (Cl^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• trazas de catión: Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg; heavy metals: ≤0.001% (by ICP-OES)
• SMILES string: [Na+].[Na+].[H]OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
• InChI key: BNIILDVGGAEEIG-UHFFFAOYSA-L

Description

Descripción general

Sodium phosphate is widely used buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH₂PO₄), dibasic (Na₂HPO₄), and tribasic (Na₃PO₄). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution.

Safety Information

• Código de clase de almacenamiento: 11 - Combustible Solids
• WGK: WGK 1
• Punto de inflamabilidad F: Not applicable
• Punto de inflamabilidad C: Not applicable