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Supelco® Potassium hydroxide pellets for analysis EMSURE®

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MT-CM-105033.0500

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Linear Formula:  KOH

CAS Number:  1310-58-3

Molecular Weight:  56.11

MDL number:  MFCD00003553

UNSPSC Code:  12352305

EC Index Number:  215-181-3

NACRES:  NA.21

Assay:  ≥85.0% KOH basis (acidimetric)

Grade:  reagent grade

Form:  solid

Solubility:  1130 g/L

Grade  reagent grade

Quality Level  300

Agency  suitable for SM 5210

vapor pressure  1 mmHg ( 719 °C)

product line  EMSURE®

Assay  ≥85.0% KOH basis (acidimetric)

Form  solid

Potency  333 mg/kg LD50, oral (Rat)

pH  14 (20 °C, 56 g/L in H2O)

mp  361 °C (lit.)

solubility  1130 g/L

anion traces

carbonate (K2CO3): ≤1.0%

chloride (Cl-): ≤0.005%

phosphate (PO43-): ≤0.0005%

silicate (as SiO2): ≤0.005%

sulfate (SO42-): ≤0.0005%

cation traces

Al: ≤0.001%

Ca: ≤0.001%

Cu: ≤0.0002%

Fe: ≤0.0005%

N: ≤0.0005%

Na: ≤0.5%

Ni: ≤0.0005%

Pb: ≤0.0005%

Zn: ≤0.0025%

heavy metals (as Pb): ≤0.0005%

storage temp.  2-30°C

SMILES string  [OH-].[K+]

InChI  1S/K.H2O/h;1H2/q+1;/p-1

InChI key  KWYUFKZDYYNOTN-UHFFFAOYSA-M

Application

Potassium hydroxide (KOH) can be used:

  • To precipitate perchlorate ions after the addition of perchloric acid during the extraction of intracellular metabolites from yeast. It is also utilized to adjust the pH of the solution, ensuring optimal conditions for subsequent analysis.
  • In corrosion testing of anodized aluminium alloys to evaluate mass loss and corrosion resistance of the anodic layer.
  • To basify reaction mixtures, facilitating the derivatization needed for gas chromatography-mass spectrometry (GC-MS) analysis in the identification of metabolic precursors.

Analysis Note

Assay (acidimetric, KOH): ≥ 85.0 %

Carbonate (as K₂CO₃): ≤ 1.0 %

Chloride (Cl): ≤ 0.005 %

Phosphate (PO₄): ≤ 0.0005 %

Silicate (SiO₂): ≤ 0.005 %

Sulfate (SO₄): ≤ 0.0005 %

Total nitrogen (N): ≤ 0.0005 %

Heavy metals (as Pb): ≤ 0.0005 %

Al (Aluminium): ≤ 0.001 %

Ca (Calcium): ≤ 0.001 %

Cu (Copper): ≤ 0.0002 %

Fe (Iron): ≤ 0.0005 %

Na (Sodium): ≤ 0.5 %

Ni (Nickel): ≤ 0.0005 %

Pb (Lead): ≤ 0.0005 %

Zn (Zinc): ≤ 0.0025 %

Legal Information

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