30603

Potassium hydroxide

pellets, reag. Ph. Eur., ≥85%

• Synonym(s): Caustic potash
• Linear Formula: KOH
• CAS Number: 1310-58-3
• Molecular Weight: 56.11
• EC Number: 215-181-3
• MDL number: MFCD00003553
• UNSPSC Code: 12352106
• eCl@ss: 38100303
• PubChem Substance ID: 329753544
• NACRES: NA.21

Properties

• agency: USP/NF; reag. Ph. Eur.
• vapor pressure: 1 mmHg ( 719 °C)
• assay: ≥85%
• form: pellets
• impurities: ≤2.0% K₂CO₃
• pH: ~13.5 (25 °C, 5.6 g/L)
• mp: 361 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.02%; phosphate (PO₄^3-): ≤0.01%; sulfate (SO₄^2-): ≤0.02%
• cation traces: Al: ≤0.001%; Ca: ≤0.001%; Fe: ≤0.001%; Na: ≤1.0%; Ni: ≤0.0005%
• SMILES string: [OH-].[K+]
• InChI: 1S/K.H2O/h;1H2/q+1;/p-1
• InChI key: KWYUFKZDYYNOTN-UHFFFAOYSA-M

Description

General description

Potassium hydroxide is a strong alkali that can be used in nucleophilic substitution reactions, addition reactions, and basic hydrolysis reactions. It can also be used to catalyze aldol-type reactions.

Application

Potassium hydroxide can be used as a base:

• In the Pd-catalyzed Heck reaction of aryl halides with alkenes.
• To synthesize β-alkylated alcohols via pincer-Ni catalyzed Guerbet reaction.
• For the hydroxylation of aryl or heteroarylboronic acids to corresponding phenols.

It can also be used as a catalyst for the:

• Transesterification of triglycerides to prepare biodiesels.
• Synthesis of β-phenylethylamines via intermolecular addition of arylamines to styrenes.
• Claisen-Schmidt condensation reaction to synthesize chalcones.

Packaging

This product is also available in glass bottles.

Safety Information

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H290,H302,H314
• pcodes: P234 - P260 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable