1.06566

Natriumphosphat, zweibasisch

anhydrous 99.99 Suprapur^®

• Synonym(e): Natriumphosphat, sec-Natriumphosphat, Dinatriumphosphat, Natriumhydrogenphosphat, di-Natriumhydrogenphosphat
• Lineare Formel: Na₂HPO₄
• CAS-Nummer: 7558-79-4
• Molekulargewicht: 141.96
• NACRES: NB.21
• EC Index Number: 231-448-7
• UNSPSC Code: 12352302
• MDL number: MFCD00003496
• Assay: 99.99%
• Form: solid
• Solubility: 77 g/L

Eigenschaften

• Quality Segment: 100
• description: for inorganic trace analysis
• assay: 99.99%
• form: solid
• potency: >2000 mg/kg LD₅₀, oral (Rat)
• pH: 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: 250 °C (decomposition)
• solubility: 77 g/L
• bulk density: 880 kg/m³
• storage temp.: 2-30°C
• 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

Beschreibung

Analysis Note

Reinheit (metallisch): ≥ 99,99 %
Gehalt (acidimetrisch): ≥ 99,0 %
Extinktion (bei 260 nm; 10 %; 2 cm; Wasser): ≤ 0,010
Chlorid (Cl): ≤ 5 ppm
Sulfat (SO₄): ≤ 30 ppm
Gesamtstickstoff (N): ≤ 10 ppm
As (Arsen): ≤ 0,1 ppm
Ba (Barium): ≤ 10,0 ppm
Ca (Calcium): ≤ 0,50 ppm
Cd (Cadmium): ≤ 0,010 ppm
Ce (Cerium): ≤ 0,010 ppm
Co (Cobalt): ≤ 0,010 ppm
Cr (Chrom): ≤ 0,050 ppm
Cs (Cäsium): ≤ 5 ppm
Cu (Kupfer): ≤ 0,010 ppm
Eu (Europium): ≤ 0,010 ppm
Fe (Eisen): ≤ 0,05 ppm
Hg (Quecksilber): ≤ 0,05 ppm
K (Kalium): ≤ 2,0 ppm
La (Lanthan): ≤ 0,010 ppm
Li (Lithium): ≤ 1,0 ppm
Mg (Magnesium): ≤ 0,10 ppm
Mn (Mangan): ≤ 0,010 ppm
Ni (Nickel): ≤ 0,050 ppm
Pb (Blei): ≤ 0,010 ppm
Rb (Rubidium): ≤ 5,0 ppm
Sm (Samarium): ≤ 0,010 ppm
Sr (Strontium): ≤ 0,50 ppm
Tl (Thallium): ≤ 0,01 ppm
Y (Yttrium): ≤ 0,010 ppm
Yb (Ytterbium): ≤ 0,010 ppm
Zn (Zink): ≤ 0,050 ppm

Legal Information

SUPRAPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Sicherheitshinweise

• Lagerklasse: 13 - Non Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable