306568

Sigma-Aldrich

Potassium hydroxide

semiconductor grade, pellets, 99.99% trace metals basis (Purity excludes sodium content.)

Synonym(s):
Caustic potash
Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
EC Number:
MDL number:
eCl@ss:
38100303
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

semiconductor grade

vapor pressure

1 mmHg ( 719 °C)

assay

99.99% trace metals basis (Purity excludes sodium content.)

form

pellets

composition

KOH, >85.0%

impurities

15% water

pH

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

cation traces

Na: ≤ 500.0 ppm

SMILES string

[OH-].[K+]

InChI

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

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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Application

In combination with tellurium powder, mediates the quantitative pinacolization of aromatic carbonyl compounds.

Packaging

100, 500 g in poly bottle

pictograms

CorrosionExclamation mark

signalword

Danger

hazcat

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

storage_class_code

8A - Combustible, corrosive hazardous materials

WGK Germany

WGK 1

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

Qilun Wang et al.
Nature communications, 11(1), 4246-4246 (2020-08-28)
Water electrolysis offers a promising energy conversion and storage technology for mitigating the global energy and environmental crisis, but there still lack highly efficient and pH-universal electrocatalysts to boost the sluggish kinetics for both cathodic hydrogen evolution reaction (HER) and...
Maria D Cabezas et al.
Methods in cell biology, 119, 261-276 (2014-01-21)
The extracellular matrix (ECM) is a complex, spatially inhomogeneous environment that is host to myriad cell-receptor interactions that promote changes in cell behavior. These biological systems can be probed and simulated with engineered surfaces, but doing so demands careful control...
Ian T McCrum et al.
The journal of physical chemistry. C, Nanomaterials and interfaces, 122(29), 16756-16764 (2018-09-28)
The effect of the alkali-metal cation (Li+, Na+, K+, and Cs+) on the non-Nernstian pH shift of the Pt(554) and Pt(533) step-associated voltammetric peak is elucidated over a wide pH window (1-13), through computation and experiment. In conjunction with our...
Khan, R.H. et al.
Synthetic Communications, 27, 2193-2193 (1997)
Takahiro Naito et al.
ChemSusChem, 13(22), 5921-5933 (2020-09-03)
Hydrogen production from renewable energy and ubiquitous water has a potential to achieve sustainability, although current water electrolyzers cannot compete economically with the fossil fuel-based technology. Here, we evaluate water electrolysis at pH 7 that is milder than acidic and alkaline...

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