磷酸钾 一元

等级

ACS reagent

方案

≥99.0%

杂质

≤0.001% N compounds
≤0.01% insolubles

缺失

≤0.2% loss on drying

pH值（酸碱度）

4.1-4.5

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

mp

252.6 °C (lit.)

密度

2.338 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤0.001%
sulfate (SO₄^2-): ≤0.003%

痕量阳离子

Fe: ≤0.002%
Na: ≤0.005%
heavy metals: ≤0.001%

SMILES字符串

[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 key

GNSKLFRGEWLPPA-UHFFFAOYSA-M