SX0723

Natriumphosphat

anhydrous, HPLC, Meets ACS Specifications

• Synonym(e): Disodium Hydrogen Phosphate, Anhydrous, Disodium Hydrogen Phosphate, sec-Natriumphosphat, Dinatriumphosphat, Natriumhydrogenphosphat, di-Natriumhydrogenphosphat
• Lineare Formel: Na₂HPO₄
• CAS-Nummer: 7558-79-4
• Molekulargewicht: 141.96
• MDL-Nummer: MFCD00003496
• UNSPSC-Code: 12352302
• EG-Index-Nummer: 231-448-7

Eigenschaften

• Qualitätsniveau: 200
• Assay: ≥99.0%
• Form: crystalline powder
• Methode(n): HPLC: suitable
• Verunreinigungen: ≤0.01% Insoluble matter
• Verlust: ≤0.2% loss on drying
• pH-Wert: 8.7-9.3 (20 °C, 10 g/L in H₂O)
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• mp (Schmelzpunkt): 250 °C (decomposition)
• Löslichkeit: 77 g/L
• Anionenspuren: chloride (Cl^-): ≤0.002%; sulfate (SO₄^2-): ≤0.005%
• Kationenspuren: Fe: ≤0.002%; heavy metals (as Pb): ≤0.001%
• UV-Absorption: λ: 280 nm A_max: ≤0.05
• Versandbedingung: ambient
• Lagertemp.: room temp
• 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
• InChIKey: BNIILDVGGAEEIG-UHFFFAOYSA-L

Beschreibung

Anwendung

anhydrous, HPLC, Meets ACS Specifications

Hinweis zur Analyse

Assay99.0% minChloride (Cl)0.002% maxFormWhite crystalline powderHeavy metals (as Pb)0.001% maxInsoluble matter0.01% maxIron (Fe)0.002% maxLoss on drying0.2% maxSulfate (SO4)0.005% maxUV Absorbance (1 M, water, 280 nm)0.05AU maxpH of a 5% solution at 25°C8.7-9.3

Sicherheitshinweise

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