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60220

Phosphate de potassium monobasic

Name: Phosphate de potassium monobasic
Brand: SIGALD

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

Synonyme(s) :

Dihydrogénophosphate de potassium, Phosphate de potassium prim.

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A propos de cet article

Formule linéaire :

KH₂PO₄

Numéro CAS:

7778-77-0

Poids moléculaire :

136.09

NACRES:

NA.21

PubChem Substance ID:

329758828

UNSPSC Code:

12352300

EC Number:

231-913-4

MDL number:

MFCD00011401

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Propriétés

Quality Segment

100

agency

reag. ISO, reag. Ph. Eur.

grade

ACS reagent, anhydrous, puriss. p.a.

assay

99.5-100.5%

form

crystalline

impurities

≤0.001% total nitrogen (N)

loss

≤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.)

solubility

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

density

2.338 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤5 mg/kg, sulfate (SO₄^2-): ≤30 mg/kg

cation traces

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

Description

General description

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

Application

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

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Classe de stockage

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c