1.05099

di-Potassium hydrogen phosphate trihydrate

for analysis EMSURE^®

• Synonym(s): di-Potassium hydrogen phosphate trihydrate, Potassium phosphate dibasic
• Empirical Formula (Hill Notation): HK₂O₄P · 3H₂O
• CAS Number: 16788-57-1
• Molecular Weight: 228.22
• MDL number: MFCD00149926
• UNSPSC Code: 12352302
• EC Index Number: 231-834-5

Properties

• Quality Level: 300
• product line: EMSURE^®
• assay: ≥99.0% (acidimetric)
• form: solid
• pH: 9.2-9.4 (20 °C, 50 g/L in H₂O)
• mp: 340 °C (anhydrous substance; decomposes)
• bulk density: 800 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: As: ≤0.00005%; Fe: ≤0.0005%; N: ≤0.001%; Na: ≤0.1%; heavy metals (as Pb): ≤0.001%
• storage temp.: 15-25°C
• InChI: 1S/2K.H3O4P.3H2O/c;;1-5(2,3)4;;;/h;;(H3,1,2,3,4);3*1H2/q2*+1;;;;/p-2
• InChI key: XQGPKZUNMMFTAL-UHFFFAOYSA-L

Description

Linkage

Replaces: PX1571; PX1571-1; PX1571-20

Analysis Note

Assay (acidimetric): ≥ 99.0 %
pH-value (5 %; water): 9.1 - 9.3
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.00005 %
Fe (Iron): ≤ 0.0005 %
Na (Sodium): ≤ 0.1 %

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