磷酸钾二元 一元

KH₂PO₄

136.09

MFCD00011401

231-913-4

Replaces: 5108-1; 5108-2; 5108

Purity (metallic): ≥ 99.995 %
Assay (acidimetric): ≥ 99.5 %
Spec. Absorbance A at 260 nm (2 cm, 10%, water): ≤ 0.010
Chloride (Cl): ≤ 5 ppm
Sulfate (SO₄): ≤ 30 ppm
As (Arsenic): ≤ 0.1 ppm
Ba (Barium): ≤ 5.0 ppm
Ca (Calcium): ≤ 0.50 ppm
Cd (Cadmium): ≤ 0.005 ppm
Ce (Cerium): ≤ 0.010 ppm
Co (Cobalt): ≤ 0.010 ppm
Cu (Copper): ≤ 0.005 ppm
Eu (Europium): ≤ 0.010 ppm
Fe (Iron): ≤ 0.10 ppm
Hg (Mercury): ≤ 0.05 ppm
La (Lanthanum): ≤ 0.010 ppm
Mg (Magnesium): ≤ 0.50 ppm
Mn (Manganese): ≤ 0.010 ppm
Na (Sodium): ≤ 20.0 ppm
Ni (Nickel): ≤ 0.010 ppm
Pb (Lead): ≤ 0.005 ppm
Sm (Samarium): ≤ 0.010 ppm
Sr (Strontium): ≤ 0.50 ppm
Tl (Thallium): ≤ 0.01 ppm
Y (Yttrium): ≤ 0.010 ppm
Yb (Ytterbium): ≤ 0.010 ppm
Zn (Zinc): ≤ 0.005 ppm

SUPRAPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

100

for inorganic trace analysis

≥99.5% (alkalimetric)
99.995% anhydrous basis

solid

>4640 mg/kg LD₅₀, skin (Rabbit)

HPLC: suitable

4.2-4.6 (20 ℃, 20 g/L in H₂O)

252.6 ℃ (lit.)

208 g/L

2.338 g/mL at 25 ℃ (lit.)

1200 kg/m³

2-30℃

[K+].OP(O)([O-])=O

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

GNSKLFRGEWLPPA-UHFFFAOYSA-M

11 - Combustible Solids

WGK 1