71650

Natriumphosphat dibasisch Dodecahydrat

puriss. p.a., crystallized, ≥99.0% (T)

• Synonym(e): sec-Natriumphosphat, Dinatrium-hydrogenphosphat Dodecahydrat, Dinatriumphosphat, di-Natriumhydrogenphosphat Dodecahydrat
• Lineare Formel: Na₂HPO₄ · 12H₂O
• CAS-Nummer: 10039-32-4
• Molekulargewicht: 358.14
• EG-Nummer: 231-448-7
• MDL-Nummer: MFCD00149181
• UNSPSC-Code: 12161700
• PubChem Substanz-ID: 329763400
• NACRES: NA.21

Eigenschaften

• Qualität: puriss. p.a.; crystallized
• Qualitätsniveau: 200
• Assay: ≥99.0% (T)
• Form: crystals
• pH-Wert: 9.0-9.3 (25 °C, 50 mg/mL in H₂O)
• Löslichkeit: water: soluble 35.8 g/L at 20 °C
• Anionenspuren: chloride (Cl^-): ≤5 mg/kg; fluoride (F^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Kationenspuren: As: ≤0.5 mg/kg; 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
• SMILES String: O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2
• InChIKey: DGLRDKLJZLEJCY-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

Sodium phosphate is a colorless crystalline sodium salt. It is widely used as a 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.

Anwendung

Sodium phosphate dibasic dodecahydrate may be used to prepare the 0.1M phosphate buffer having pH 7.4.

Sicherheitshinweise

• Lagerklassenschlüssel: 13 - Non Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable