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Merck
CN

60369

Potassium hydroxide

BioUltra, ≥86% (T), pellets

Synonym(s):

Caustic potash

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About This Item

Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
EC Number:
215-181-3
UNSPSC Code:
12352106
MDL number:
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InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

InChI

1S/K.H2O/h;1H2/q+1;/p-1

vapor pressure

1 mmHg ( 719 °C)

product line

BioUltra

assay

≥86% (T)

form

pellets

impurities

insoluble matter, passes filter test, ≤0.0005% total nitrogen (N), ≤0.6% potassium carbonate (K2CO3)

mp

361 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless, alcohol: soluble(lit.), water: soluble(lit.)

anion traces

chloride (Cl-): ≤5 mg/kg, phosphate (PO43-): ≤5 mg/kg, silicate (as SiO2): ≤5 mg/kg, sulfate (SO42-): ≤5 mg/kg

cation traces

Ag: ≤5 mg/kg, Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Hg: ≤0.1 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤5000 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 0.020, λ: 280 nm Amax: 0.010

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Other Notes

For volumetric analysis. Preparation of standard KOH

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Regulatory Information

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C. Long, E. & F.N. Spon
Biochemists Handbook, 15-15 (1971)
Ji-Tai Li et al.
Ultrasonics sonochemistry, 9(5), 237-239 (2002-10-10)
Claisen-Schmidt condensation of acetophenone with aromatic aldehydes catalyzed by pulverized KOH and KF-Al2O3 results chalcones in 52-97% and 83-98% yields respectively in alcoholic solvent under ultrasound irradiation.
Saeid Baroutian et al.
Bioresource technology, 102(2), 1095-1102 (2010-10-05)
In this study, a novel continuous reactor has been developed to produce high quality methyl esters (biodiesel) from palm oil. A microporous TiO2/Al2O3 membrane was packed with potassium hydroxide catalyst supported on palm shell activated carbon. The central composite design
Aldol condensation in gaseous phase by zeolite catalysts.
Wierzchowski PT and Zatorski LW.
Catalysis Letters, 9(5-6), 411-414 (1991)
Rokas Drevinskas et al.
Optics express, 23(2), 1428-1437 (2015-04-04)
Surface texturing is demonstrated by the combination of wet etching and ultrafast laser nanostructuring of silica glass. Using potassium hydroxide (KOH) at room temperature as an etchant of laser modified glass, we show the polarization dependent linear increase in retardance

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