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44273 Potassium hydroxide, 99.98% (metals basis), 85% min

CAS Number

Stock No. Size Price ($) Quantity Availability
44273-22 100g 75.70
44273-36 500g 239.00
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Potassium hydroxide, 99.98% (metals basis), 85% min


Chemical Properties

Formula Weight
Melting point
Boiling Point
Storage & Sensitivity
Ambient temperatures.
Freely soluble in water. Soluble in ethanol.


Potassium hydroxide acts as the precursor for most of the soft and liquid soaps, and for numerous potassium-containing chemicals. It is widely used in the manufacture of detergents, fertilizer, rayon, paper, dyestuffs, various drugs, drug intermediates, fine chemicals, and petroleum products. In the field of organic chemistry, potassium hydroxide acts as a base, and is used in the synthesis of several organic compounds. Further it finds application as an electrolyte in alkaline batteries, which are based on nickel-cadmium, nickel-hydrogen and manganese dioxide-zinc.


Contains Na <100ppmAir sensitive and hygroscopic. Incompatible with nitro compounds, alkali metals, magnesium, copper, halogens, azides and anhydrides. Contact with aluminum, tin and zinc liberates hydrogen gas.

Literature References

Ong, A. L.; Inglis, K. K.; Whelligan, D. K.; Murphy, S.; Varcoe, J. R. Effect of cationic molecules on the oxygen reduction reaction on fuel cell grade Pt/C (20 wt%) catalyst in potassium hydroxide (aq, 1 mol dm- 3). Phy. Chem. Chem. Phy.2015, 17 (18), 12135-12145.

Aili, D.; Jankova, K.; Li, Q.; Bjerrum, N. J.; Jensen, J. O. The stability of poly (2, 2'-(m-phenylene)-5, 5'-bibenzimidazole) membranes in aqueous potassium hydroxide. J. Membr. Sci. 2015, 492, 12135-12145.

Liu, Z.; Sheng, P.; Yang, Y. P.; Li, W.; Huang, W. M.; Wang, J. D.; Fan, Y. M. Comparison of modified Chicago sky blue stain and potassium hydroxide mount for the diagnosis of dermatomycoses and onychomycoses. J. Microbiol. Methods2015, 112, 21-23.

Nie, W.; Liu, J.; Liu, W.; Wang, J.; Tang, T. Decomposition of waste carbon fiber reinforced epoxy resin composites in molten potassium hydroxide. Polym. Degrad. Stab. < span> 2015, 111, 247-256.

GHS Hazard and Precautionary Statements

Hazard Statements: H290-H302-H314-H335

May be corrosive to metals. Harmful if swallowed. Causes severe skin burns and eye damage. May cause respiratory irritation.

Precautionary Statements: P234-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P390-P501c

Keep only in original container. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Wash contaminated clothing before reuse. Absorb spillage to prevent material damage. Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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