Caustic Potash Lye

Caustic Potash Lye

Product Details:

  • Storage Room Temperature
  • Application Industrial
  • Molecular Formula KOH
  • Product Type Chemical compound
  • Solubility It is highly soluble in water
  • Physical Form Liquid
  • Melting Point 360.8C
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Caustic Potash Lye Price and Quantity

  • 20 Ton

Caustic Potash Lye Specifications

  • Liquid
  • 360.8C
  • It is highly soluble in water
  • KOH
  • Chemical compound
  • Room Temperature
  • Industrial

Product Description

Caustic potash lye, also known as potassium hydroxide (KOH) or potash lye, is a strong alkali chemical compound. It is similar in many ways to sodium hydroxide (NaOH), which is commonly known as caustic soda. Both substances are highly corrosive and can cause severe burns upon contact with skin, as they readily react with water to produce heat.

Caustic potash lye has several industrial applications, including:

1. Chemical Manufacturing: It is used as a precursor in the production of various chemicals, including potassium carbonate, potassium phosphates, and potassium soap. It's also used in the production of biodiesel from vegetable oils and animal fats.

2. Soap Making: Caustic potash lye is traditionally used to make liquid soaps, especially those that require the saponification of fats and oils.

3. Food Processing: In food processing, it is used for various purposes such as peeling fruits and vegetables, cocoa processing, and curing olives.

4. Biodiesel Production: Caustic potash lye is used in the transesterification process to convert vegetable oils or animal fats into biodiesel.

5. Dyeing and Textile Industry: It's used in dyeing and printing textiles.

6. Petroleum Industry: Caustic potash is used for refining petroleum products.

7. Chemical Analysis: It's used in analytical chemistry for titration and pH adjustments.

8. Battery Electrolyte: In some types of batteries, caustic potash is used as an electrolyte.

Caustic Potash Lye Properties:

1. Chemical Formula: KOH

2. Molecular Weight: Approximately 56.11 g/mol

3. State at Room Temperature: It is typically a white, deliquescent (absorbs moisture from the air), crystalline solid. It readily dissolves in water to form a 
colorless, highly alkaline solution.

4. Odor: Caustic potash has no characteristic odor.

5. Solubility: It is highly soluble in water and forms a strongly alkaline solution.

6. pH: The aqueous solution of caustic potash is highly alkaline, with a pH value typically around 13-14.

7. Boiling Point: The boiling point of KOH is approximately 1,327 degree centigrade.

8. Melting Point: The melting point of KOH is about 360.8 degree centigrade.

9. Density: The density of solid KOH is around 2.044 g/cm3. The density of the aqueous solution varies with concentration.

10. Corrosive Nature: Caustic potash is highly corrosive to organic materials, metals, and living tissues. It can cause severe chemical burns upon contact with skin and eyes.

11. Hygroscopic: Caustic potash is hygroscopic, meaning it readily absorbs moisture from the air.

12. Reactivity: It is a strong base and reacts vigorously with acids, releasing heat. It can also react with certain metals to generate hydrogen gas.

13. Flammability: Caustic potash itself is not flammable, but it can react with combustible materials in certain conditions.


It should be stored in a dry and well-ventilated area, away from incompatible materials. Proper labeling and handling precautions are essential.


Due to its caustic and corrosive nature, protective equipment such as gloves, goggles, and lab coats should be worn when handling caustic potash. In case of skin or eye contact, thorough washing with water is crucial, and medical attention should be sought if necessary.

Caustic potash lye is an essential chemical in various industrial processes, but its use requires careful handling and adherence to safety guidelines to prevent accidents and injuries.


Q. What is Caustic Potash Lye?

Ans: Caustic potash lye, also known as potassium hydroxide (KOH), is a strong alkaline chemical compound. It is highly corrosive and commonly used in industrial processes.

Q. What is Caustic Potash Lye Used For?

Ans: Caustic potash lye has various industrial applications, including soap making, chemical manufacturing, food processing, biodiesel production, dyeing and textiles, petroleum refining, and more.

Q. Is Caustic Potash Lye Dangerous?

Ans: Yes, caustic potash lye is highly dangerous due to its corrosive nature. It can cause severe burns upon contact with skin and eyes. Proper safety precautions and protective equipment are essential when working with it.

Q. How is Caustic Potash Lye Handled Safely?

Ans: Caustic potash lye should be handled with extreme caution. Always wear appropriate protective gear, such as gloves, goggles, and lab coats. Work in a well-ventilated area, avoid inhalation, and follow proper storage guidelines.

Q. What Should I Do in Case of Skin Contact?

Ans: In case of skin contact, immediately wash the affected area with plenty of water for at least 15 minutes. Remove contaminated clothing and seek medical attention if irritation or burns occur.

Q. What Should I Do in Case of Eye Contact?

Ans: If caustic potash lye comes in contact with your eyes, rinse them thoroughly with water for at least 15 minutes while holding your eyelids open. Seek immediate medical attention.

Q. Can Caustic Potash Lye Cause Environmental Harm?

Ans: Yes, caustic potash lye can harm the environment if not properly handled or disposed of. It should be managed according to local regulations and best practices to prevent pollution.

Q. Can I Mix Caustic Potash Lye with Other Chemicals?

Ans: Caustic potash lye should not be mixed with strong acids or incompatible materials, as it can lead to hazardous reactions. Always consult chemical compatibility charts and guidelines before mixing chemicals.

Q. What Precautions Should I Take When Using Caustic Potash Lye in Soap Making?

Ans: When using caustic potash lye for soap making, follow a well-tested recipe and wear protective gear. Mix the lye with water slowly and carefully to avoid splattering. Allow the solution to cool before adding it to oils.

Q. Where Can I Buy Caustic Potash Lye?

Ans: Caustic potash lye can be purchased from chemical suppliers, industrial suppliers, and online retailers. Ensure that you are purchasing from a reputable source and follow regulations for its purchase and use.
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