60220-M

Potassium phosphate monobasic

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

• Szinonimák: Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
• Lineáris képlet: KH₂PO₄
• CAS-szám: 7778-77-0
• Molekulatömeg: 136.09
• EC-szám: 231-913-4
• MDL-szám: MFCD00011401
• UNSPSC kód: 12352302
• PubChem Substance ID: 329758828
• NACRES: NA.21

Tulajdonságok

• grade: ACS reagent; anhydrous; puriss. p.a.
• Ügynökség: reag. ISO; reag. Ph. Eur.
• Teszt: 99.5-100.5%
• form: crystalline
• szennyeződések: ≤0.001% total nitrogen (N)
• veszteség: ≤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)
• bp: >450 °C
• mp: 252.6 °C (lit.)
• sűrűség: 2.338 g/mL at 25 °C (lit.)
• anion nyomok: chloride (Cl^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤30 mg/kg
• kation nyomok: 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)
• SMILES string: [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
• Nemzetközi kémiai azonosító kulcs: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Leírás

Általános leírás

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

Alkalmazás

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.

Biztonsági adatok

• Tárolási osztály kódja: 11 - Combustible Solids
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable