Potassium Hydroxide (Caustic Potash)

What is Potassium Hydroxide (Caustic Potash)?

Molecular Formula (Potassium Hydroxide (Caustic Potash): KOH

Molecular Weight: 56.105 g/mol

Chemical Name: Potassium Hydroxide

CAS Number: 1310-58-3

Potassium hydroxide (caustic potash) is an inorganic chemical compound with the formula KOH. Its most common name in the industrial sector is caustic potash. It is a strong basic chemical that can be found in lump, flake, and powder forms.

Potassium hydroxide is basic enough to form strong alkaline solutions in water and other polar solvents.

The formula for caustic potash is KOH.

Caustic potash is the main component of neutralization reactions to yield potassium salts. It is an alkali metal hydroxide.

Other Names Are As Follows;

• Potassium Hydroxide
• Caustic Potash
• KOH
• 1310-58-3
• Potassium Lye
• Potassium Hydrate
• Caustic Potash
• Potash
• Potassium Hydroxide
• Caustic Potash Flakes
• Solution Form
• Potassium Oxidanide
• Potassium Hydroxyl
• Pellet Form

How is it Produced?

It is a chemical produced industrially by the electrolysis of potassium chloride. In the potassium hydroxide production process, caustic potash at 90-95% concentration is obtained by evaporating the solution containing high amounts of water. The 5-10% water is bound as monohydrate.

The electrolysis stage is as follows.

KCl + H₂O 》KOH + HCl

What are the Physical and Chemical Properties?

Physically, it appears as odorless, white, and slightly yellow lumps.

The boiling point is 1324 °C.

The melting point is 380 °C.

Its density is 2.04 g/cm³.

Its solubility has been determined as 110 g/100 mL at 25 °C.

It is soluble in Ethanol and Methanol. It is soluble in Glycerin. It is slightly soluble in ether.

Potassium hydroxide is non-flammable.

It is a corrosive chemical.

It has strong alkaline properties.

What are the Usage Areas of Potassium Hydroxide (Caustic Potash)?

• It is a general chemical used in the manufacture of many potassium compounds in the chemical industry.
• With the progress of technology and population growth, the construction sector has also grown. Along with this, the insulation sector has developed. For this reason, thermal and acoustic insulation materials manufactured from phenol-formaldehyde and mineral wool are developed. Caustic potash is used as a catalyst reagent in the manufacture of such products.
• Potassium hydroxide acts as a pH control chemical, stabilizer, and food thickening agent in the food industry.
• It is among the alkaline chemicals used to strip paint from metal.
• Caustic potash is used in the manufacture of liquid drain cleaners. Here it has a concentration of 25% to 36%.
• It is used as an alkaline source for industrial equipment cleaning.
• In the medical field, it is used to prepare wet mounts of various clinical specimens to microscopically visualize fungi and similar fungal elements in hair, skin, nails, and even vaginal secretions.
• Caustic potash has been found effective in the treatment of warts in the medical field and is used within a formulation for this purpose.
• Potassium hydroxide is used in battery production by reducing it to a concentration of up to 35% by weight.
• It is used in the manufacture of hairsprays. Hairspray production contains potassium hydroxide (caustic potash) in the range of 0.1% to 5.0% as a neutralizing agent.
• In the cosmetic and skin care industry, caustic potash is used as a pH adjuster and buffering agent in perfumes, bath products, hair dyes, nail polishes, and shaving products.
• Its water absorption property is one of its most attractive features.
• In industrial cleaning chemicals produced for cleaning aluminum and steel materials, its 50% aqueous solution is used together with Sodium Lauryl Sulfate and Calcium Chloride.
• It is used as a pH regulator (neutralizing agent) in gel production. The gel here can be ultrasound gel or disinfectant gel.
• In the cosmetics industry, it is used at a maximum of 1.5% by weight, benefiting from its callus-softening properties.
• It is used to provide flexural development of polypropylene composites produced by reinforcing with coconut fiber.
• It is used in soft soap manufacture due to its softness and high solubility.
• Caustic potash is used in the treatment of genital warts.
• In biodiesel production, catalysts are used to ensure the reaction takes place faster and with higher efficiency according to the type of raw material used. Potassium hydroxide is among these alkaline catalysts.
• Potassium is important for plants to perform photosynthesis. If plants experience a potassium deficiency, it is not possible for them to survive in dry weather conditions. Therefore, potassium hydroxide can be given as a potassium source to plants in hot climates and dry environmental conditions.
• It is used to determine the consistency of soap in liquid and solid soap production.

What are Other Usage Areas of Potassium Hydroxide (Caustic Potash)?

• Therapeutic creams containing Flavonoids and Vitamin B are used to eliminate hyperpigmentation and skin aging. It is used to neutralize carboxylic acid in these creams.
• It is used in the manufacture of corrosion inhibitors and scale inhibitors.
• It is an important component in the manufacture of ion exchange materials.
• It is used as coating and surface treatment agents.
• It can be used in the manufacture of process regulators.
• Potassium hydroxide is used in the agricultural sector to balance the pH level of acidic soils. It is reacted with leonardite to obtain liquid humic acid. The most important reason for using humic acid in agriculture is to prepare the ground for the nutrients needed by the plant to be easily absorbed by dissolving them.
• In medical applications, potassium hydroxide is used together with calcium hydroxide as a chemical carbon dioxide absorbent in closed-circuit anesthesia.
• In the metal sector, industrial washing machines are used in the final process for cleaning manufactured metal kitchenware. It is used within the chemical component produced as a degreasing chemical in these machines.
• It is used as a potassium source in potassium nitrate production.
• In sodium dichromate production, it can be used instead of Potassium Carbonate for roasting chrome ore.
• Catalysts are used for recycling polyurethane foams. Caustic potash is a good catalyst for this application.
• It is used as a pH adjuster in the manufacture of water-based adhesives produced for bonding materials such as rubber. Aqueous Ammonia can also be used instead.
• In the hairdressing field, it is used to keep the pH level of the perming process at a certain level.
• In the metal plating sector, it is a chemical used for cleaning organic contaminants on metal.
• It is used in the production of humic acid to increase its solubility and to obtain a fast and functional humic acid.
• It is used as an alkalinity control agent in the manufacture of drilling chemicals. Additionally, Sodium Hydroxide can also be used for this application.
• It is used together with acrylic acid and sodium hydroxide in the production of resins with superabsorbent properties. These resins are products optimized for diaper production or areas where water retention is necessary.

What are the Factors Affecting the Prices?

The price of potassium hydroxide (caustic potash) is directly dependent on the price of the materials used in the production of this chemical. As potassium chloride prices increase, prices will increase.

One of the biggest factors affecting the prices of this chemical is electricity consumption in the production process. As electricity prices increase, prices will increase.

The price of potassium hydroxide has shown a continuous increase with the development of industry. As the usage area of potassium hydroxide expands, its prices will increase.