1.06682

Sodium ammonium hydrogen phosphate tetrahydrate

for analysis EMSURE^®

• Synonym(s): Sodium ammonium hydrogen phosphate tetrahydrate, Ammonium sodium hydrogen phosphate, Microcosmic salt
• Empirical Formula (Hill Notation): H₅NNaO₄P · 4H₂O
• CAS Number: 7783-13-3
• Molecular Weight: 209.07
• MDL number: MFCD00066970
• UNSPSC Code: 12352302
• EC Index Number: 235-860-8
• NACRES: NA.21

Properties

• Quality Level: 300
• product line: EMSURE^®
• assay: ≥99.0% (acidimetric)
• form: solid
• pH: 8.3 (20 °C, 50 g/L in H₂O)
• mp: 79 °C
• solubility: 167 g/L
• density: 0.85 g/cm³ at 20 °C
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: As: ≤0.00005%; Fe: ≤0.0005%; K: ≤0.001%; heavy metals (as Pb): ≤0.0005%
• storage temp.: 2-30°C
• InChI: 1S/H3N.Na.H3O4P.4H2O/c;;1-5(2,3)4;;;;/h1H3;;(H3,1,2,3,4);4*1H2/q;+1;;;;;/p-1
• InChI key: IQTQISLCLWJRPM-UHFFFAOYSA-M

Description

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.00005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.001 %

Legal Information

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

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable