磷酸钾 一元

等级

ACS reagent

质量水平

200

Agency

suitable for EPA 300
suitable for SM 5210

方案

≥99.0%

表单

powder or crystals

技术

tissue culture: suitable

杂质

≤0.01% Insoluble matter

缺失

≤0.2% loss on drying, 105°C

pH值（酸碱度）

4.1-4.5 (25 °C, 5%)

pKa (25 °C)

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

沸点

>450 °C

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% (by ICP)

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