60220-M

磷酸钾 一元

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

• 别名: prim.-磷酸钾, 磷酸二氢钾
• 线性分子式: KH₂PO₄
• CAS号: 7778-77-0
• 分子量: 136.09
• EC號碼: 231-913-4
• MDL號碼: MFCD00011401
• 分類程式碼代碼: 12352302
• PubChem物質ID: 329758828
• NACRES: NA.21

属性

• 等級: ACS reagent; anhydrous; puriss. p.a.
• agency: reag. ISO; reag. Ph. Eur.
• 化驗: 99.5-100.5%
• 形狀: crystalline
• 雜質: ≤0.001% total nitrogen (N)
• 損耗: ≤0.2% loss on drying, 105 °C
• pH值: 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.)
• 密度: 2.338 g/mL at 25 °C (lit.)
• 負離子痕跡: chloride (Cl^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤30 mg/kg
• 正離子痕跡: 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 字串: [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
• InChI 密鑰: GNSKLFRGEWLPPA-UHFFFAOYSA-M

说明

一般說明

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

應用

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.

安全信息

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable