60349-M

Potassium phosphate dibasic trihydrate

puriss. p.a., ≥99.0% (T)

• Synonym(s): Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate
• Linear Formula: K₂HPO₄ · 3H₂O
• CAS Number: 16788-57-1
• Molecular Weight: 228.22
• EC Number: 231-834-5
• MDL number: MFCD00149926
• UNSPSC Code: 12352302
• PubChem Substance ID: 329758892
• NACRES: NA.21

Properties

• grade: puriss. p.a.
• Quality Level: 200
• assay: ≥99.0% (T)
• form: crystalline powder
• impurities: ≤0.001% total nitrogen (N)
• pH: 9.1-9.4 (25 °C, 50 mg/mL in H₂O)
• anion traces: chloride (Cl^-): ≤20 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: As: ≤0.1 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Na: ≤500 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• SMILES string: O.O.O.[K+].[K+].OP([O-])([O-])=O
• 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

General description

Potassium phosphate dibasic trihydrate (K₂HPO₄.3H₂O, Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate) is the potassium salt having a pH in the range of 9.1-9.4.

Safety Information

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