30435

Natriumphosphat Dihydrat

puriss. p.a., reag. Ph. Eur., 98.5-101.0% (calc. to the dried substance)

• Synonym(e): sec-Natriumphosphat, Dinatriumphosphat, di-Natriumhydrogenphosphat, di-Natriumhydrogenphosphat Dihydrat
• Lineare Formel: Na₂HPO₄ · 2H₂O
• CAS-Nummer: 10028-24-7
• Molekulargewicht: 177.99
• EG-Nummer: 231-448-7
• MDL-Nummer: MFCD00149182
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329753513
• NACRES: NA.21

Eigenschaften

• Agentur: USP/NF; reag. Ph. Eur.
• Qualität: puriss. p.a.
• Assay: 98.5-101.0% (calc. to the dried substance)
• Form: crystals
• Verunreinigungen: reducing impurities, complies; ≤0.0005% heavy metals (as Pb); ≤0.001% total nitrogen (N); ≤0.5% NaH₂PO₄ (calc. to dried subst.)
• Verlust: 19.5-21.0% loss on drying, 130 °C
• pH-Wert: 9.0-9.2 (20 °C, 5%)
• Anionenspuren: chloride (Cl^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Kationenspuren: As: ≤0.5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg
• Eignung: in accordance for appearance of solution
• SMILES String: O.O.[Na+].[Na+].OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2
• InChIKey: KDQPSPMLNJTZAL-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

Sodium phosphate dibasic dihydrate is a highly hygroscopic and water-soluble compound. It is used in water softeners, cleaners also as buffers in particular formulations.

Anwendung

Sodium phosphate dibasic dihydrate is used:

• In the synthesis of BiOCl/BiPO₄ composites from bismuth nitrate pentahydrate and potassium chloride by the microwave-assisted hydrothermal method.
• To prepare sodium phosphate buffer solution.
• As a phosphorus source in the synthesis of Mg-doped hydroxyapatite nanoplates.

Sicherheitshinweise

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