Merck
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60220

Sigma-Aldrich

Potassium phosphate monobasic

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

Sinónimos:
prim.-Potassium phosphate, Monopotassium phosphate, Potassium dihydrogen phosphate
Fórmula lineal:
KH2PO4
Número de CAS:
Peso molecular:
136.09
Número de EC:
Número MDL:
ID de la sustancia en PubChem:
NACRES:
NA.21

Nivel de calidad

100

grado

ACS reagent
anhydrous
puriss. p.a.

Agency

reag. ISO
reag. Ph. Eur.

ensayo

99.5-100.5%

formulario

crystalline

impurezas

≤0.001% total nitrogen (N)

pérdida

≤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)

mp

252.6 °C (lit.)

solubilidad

water: 0.5 g/10 mL, clear, colorless to light yellow

densidad

2.338 g/mL at 25 °C (lit.)

trazas de anión

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

trazas de catión

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)

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

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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Descripción general

Potassium phosphate is widely used in buffers to prepare biological samples and examine biological interactions.

Aplicación

Potassium phosphate monobasic has been used:
  • to prepare the working luminol solution to study the prooxidant activity in the chemiluminescent system luminol–H2O2
  • in phosphate buffer saline (PBS) to culture embryonic stem cells (ESCs) and generate embryoid bodies
  • in PBS to prepare polydimethylsiloxane (PDMS) substrate

Envase

1, 2.5 kg in poly bottle
500 g in poly bottle

Código de clase de almacenamiento

11 - Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

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