911062

Potassium hydroxide

free-flowing, Redi-Dri^™, ACS reagent, ≥85%, pellets

• Synonym(s): Caustic potash
• Linear Formula: KOH
• CAS Number: 1310-58-3
• Molecular Weight: 56.11
• MDL number: MFCD00003553
• UNSPSC Code: 12352320
• NACRES: NA.21

Properties

• grade: ACS reagent
• agency: suitable for EPA 1621; suitable for EPA 1633; suitable for SM 5210
• vapor pressure: 1 mmHg ( 719 °C)
• product line: Redi-Dri^™
• assay: ≥85%
• form: pellets
• quality: free-flowing
• impurities: ≤0.001% N compounds; ≤2.0% K₂CO₃; 10-15% water
• mp: 361 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.01%; phosphate (PO₄^3-): ≤5 ppm; sulfate (SO₄^2-): ≤0.003%
• cation traces: Ca: ≤0.005%; Fe: ≤0.001%; Mg: ≤0.002%; Na: ≤0.05%; Ni: ≤0.001%; heavy metals: ≤0.001% (by ICP-OES)
• 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 an inorganic salt mainly used as a precursor to synthesize other potassium compounds such as potassium acetate, potassium bicarbonate and potassium carbonate. On a commercial scale, it is synthesized by the electrolysis of potassium chloride.

Application

Redi-Dri^™ is an innovative packaging product line that helps eliminate clumping material by adding extra packaging process steps without any chemical additives, anti-clumping agents, or hydrophobic compounds. Redi-Dri^™ offers a more convenient and safer way to handle the products.

Potassium hydroxide may be used in the following processes:

• Conversion of nitriles to amide in tert-butanol.
• Cross-coupling of aryl halides with different sulfur-, oxygen- and nitrogen-based nucleophiles in dimethyl sulfoxide.
• As an activator for the preparation of activated carbons from corn cobs.
• As a base for the N-alkylation of nitrogen heterocycles in polyethylene glycol-ether solvents.
• Synthesis of (S)-1-(4-benzyl-2-thioxothiazolidin-3-yl)propan-1-one from (S)-phenylalaninol.
• To catalyze the polymerization of propylene oxide.

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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: 8B - Non-combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable