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229806

Sigma-Aldrich

Potassium phosphate monobasic

99.99% trace metals basis

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Synonym(s):
Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
Linear Formula:
KH2PO4
CAS Number:
Molecular Weight:
136.09
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99.99% trace metals basis

form

solid

impurities

≤150.0 ppm Trace Metal Analysis

pKa (25 °C)

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

mp

252.6 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

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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This Item
P0662PHR133060220-M
Potassium phosphate monobasic 99.99% trace metals basis

229806

Potassium phosphate monobasic

Potassium phosphate monobasic ACS reagent, ≥99.0%

P0662

Potassium phosphate monobasic

Monobasic Potassium Phosphate Pharmaceutical Secondary Standard; Certified Reference Material

PHR1330

Monobasic Potassium Phosphate

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

60220-M

Potassium phosphate monobasic

assay

99.99% trace metals basis

assay

≥99.0%

assay

-

assay

99.5-100.5%

Quality Level

100

Quality Level

200

Quality Level

300

Quality Level

-

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

impurities

≤150.0 ppm Trace Metal Analysis

impurities

≤0.01% Insoluble matter

impurities

-

impurities

≤0.001% total nitrogen (N)

General description

Monobasic potassium phosphate crystals are colorless, soluble in water and hygroscopic in nature.Upon heating through 187°C, phase transition occurs in KH2PO4, crystal system changes from tetragonal to monoclinic, lattice parameters at 195°C are α=7.47Å, b =7.33Å, c =14.49Å, α=ß=90° and γ=92.2.

Application

it maybe used
  • to produce flurescence emmisionin carbon dots
  • buffers
  • pH control agent
  • emulsifier
  • stabilizer
  • water retention agent,
  • antioxidant in foods

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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