1.19754

di-Potassium hydrogen phosphate trihydrate

buffer substance for chromatography LiChropur^™

• 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: 12161703
• EC Index Number: 231-834-5
• NACRES: NA.21

Properties

• Quality Level: 100
• assay: ≥99.0% (acidimetric)
• form: solid
• technique(s): HPLC: suitable
• pH: 9.2-9.4 (20 °C, 50 g/L in H₂O)
• mp: 340 °C (anhydrous substance; decomposes)
• bulk density: 800 kg/m³
• storage temp.: 2-30°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

Analysis Note

Assay (acidimetric): ≥ 99.0 %
pH-value (5 %; water): 9.2 - 9.4
Self-absorption (254 nm; 0.2 mol/l; 1 cm; water): ≤ 0.01
Self-absorption (220 nm; 0.2 mol/l; 1 cm; water): ≤ 0.03
Self-absorption (215 nm; 0.2 mol/l; 1 cm; water): ≤ 0.11

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable