60220-M

Phosphate de potassium monobasic

buffer substance, anhydrous, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.5-100.5%

• Synonyme(s) : Dihydrogénophosphate de potassium, Phosphate de potassium prim., Phosphate monopotassique
• Formule linéaire : KH₂PO₄
• Numéro CAS: 7778-77-0
• Poids moléculaire : 136.09
• Numéro CE : 231-913-4
• Numéro MDL: MFCD00011401
• Code UNSPSC : 12352302
• ID de substance PubChem : 329758828
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent; anhydrous; puriss. p.a.
• Agence: reag. ISO; reag. Ph. Eur.
• Pureté: 99.5-100.5%
• Forme: crystalline
• Impuretés: ≤0.001% total nitrogen (N)
• Perte: ≤0.2% loss on drying, 105 °C
• pH: 4.2-4.5 (20 °C, 5%)
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• Point d'ébullition: >450 °C
• Pf: 252.6 °C (lit.)
• Densité: 2.338 g/mL at 25 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤30 mg/kg
• Traces de cations: As: ≤0.5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤15 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Na: ≤50 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg; heavy metals: ≤0.001% (by ICP-OES)
• Chaîne SMILES: [K+].OP(O)([O-])=O
• InChI: 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
• Clé InChI: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Description

Description générale

Potassium phosphate monobasic is a soluble salt employed as heterogeneous catalyst, additive, fungicide, buffer, and plant fertilizer.

Application

Potassium phosphate monobasic can be used as a catalyst:

• In the regioselective monobromination of aralkyl ketones to synthesize monobrominated ketones.
• To synthesize acridine-1,8-diones and hexahydroquinolines via Hantzsch type reaction.

It can also be used as an additive in the oxidation of alcohols to aldehydes. The role of KH₂PO₄ was to regulate the pH of the solution, which affected the rate at which hydroxyl radicals were generated. As a result, the reaction′s selectivity was improved.

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable