How to Make 25 Litres of Liquid Soap [Explained]

Liquid soap is an essential household and commercial cleaning product. Whether you want to make it for personal use or as a business, learning the right formula ensures quality and effectiveness. This guide provides a step-by-step process on how to make 25 liters of liquid soap, including all the necessary ingredients, equipment, and mixing techniques.

Ingredients Needed for 25 Litres of Liquid Soap

To make 25 liters of liquid soap, you will need the following ingredients:

• Caustic soda – 250g
• Soda ash – 200g
• Sodium Lauryl Sulfate (SLS) – 200g
• Glycerine – 50ml
• Sulphonic acid – 2 liters
• Sodium Tripolyphosphate (STPP) – 100g
• Texapon – 250ml
• Foam booster – 100ml
• Vitamin E – 50ml
• Formalin (Preservative) – 50ml
• Color (Dye or Pigment) – As desired
• Perfume (Fragrance oil) – As desired
• Clean water – 25 liters

Equipment Needed

• 30-liter plastic bucket
• Large wooden or plastic stirring stick
• Measuring cups and spoons
• Gloves and nose mask for safety
• Funnel (for transferring the final product into bottles)
• Plastic bottles or jerrycans for storage

Step-by-Step Process to Make 25 Litres of Liquid Soap

1. Gather and Prepare Your Ingredients

Before you start, ensure all ingredients are accurately measured and kept in separate containers. Use gloves and a mask to protect yourself from chemical reactions.

2. Prepare the Water Base

• Divide the 25 liters of water into two separate buckets:
  • Bucket 1: Pour 15 liters of clean water.
  • Bucket 2: Pour 10 liters of clean water.

3. Mixing the Chemical Solutions

• Dissolve the Nitro Powder (Thickener): Pour it into the 15 liters of water and stir continuously until fully dissolved.
• Dissolve the Caustic Soda: Pour it into the 10 liters of water and stir properly until the solution becomes clear.
• Mix Sulphonic Acid and Texapon: In a separate bowl, mix sulphonic acid and texapon until fully combined.

4. Combine the Ingredients Gradually

• Add SLS (Sodium Lauryl Sulfate) into the caustic soda solution and stir thoroughly.
• Slowly add STPP, soda ash, and foam booster while stirring continuously.
• Gradually pour the caustic soda mixture into the nitro mixture while stirring continuously.
• After adding all ingredients, stir for 30 minutes to ensure uniform mixing.

5. Adding Preservatives and Fragrance

• Add glycerine and vitamin E to enhance smoothness and skin-friendliness.
• Add formalin as a preservative to extend shelf life.
• Add the color of your choice and mix until it blends well.
• Finally, add perfume or fragrance oil and stir thoroughly.

6. Leave to Settle

• Cover the soap mixture and let it sit for 24 hours.
• This allows proper saponification and ensures all chemicals blend perfectly.

Alternative Liquid Soap Recipes

If you want to experiment with other formulas, here are some variations:

Recipe 1: 20 Litres of Liquid Soap

Ingredients:

• 1kg Ungerol
• 0.5 liters of Ufacid
• 1kg industrial salt
• 10g caustic soda
• 30g CMC
• 10g food color
• 25ml perfume

Instructions:

1. Mix Ungerol, CMC, and industrial salt in a 30-liter bucket.
2. Add water gradually while stirring until the mixture thickens.
3. Add Ufacid, caustic soda, and food color, and continue stirring.
4. Stir for at least 10 minutes and let the mixture settle.
5. Add perfume and bottle the soap.

Recipe 2: 20 Litres Using STPP & Texapon

Ingredients:

• 1 cup Antisol or Nitrosol
• ½ cup SLS
• 1 cup Soda Ash
• ½ cup STPP
• 2 liters Sulphonic Acid
• ¼ cup Texapon
• ½ cup Caustic Soda
• 2 tablespoons preservative
• 25ml perfume
• 10g colorant
• 20 liters of water

Instructions:

1. If using Antisol, dissolve in 2 liters of water and let sit overnight.
2. Mix caustic soda, soda ash, STPP, and SLS in separate bowls with water.
3. Dissolve Texapon in Sulphonic Acid and let it sit.
4. Add Texapon mix into the caustic soda solution, followed by other ingredients.
5. Stir continuously to avoid lumps and foaming.
6. Let the mixture rest before bottling.

Frequently Asked Questions (FAQ)

How is liquid soap made step by step?

Liquid soap is made by dissolving key ingredients like caustic soda, sulphonic acid, and texapon in water, mixing them in stages, adding preservatives and fragrances, and allowing the mixture to set for 24 hours.

What are the raw materials for liquid soap production?

The raw materials include caustic soda, soda ash, SLS, glycerine, sulphonic acid, STPP, texapon, foam booster, vitamin E, formalin, color, and perfume.

How do you make 1 liter of liquid soap?

To make 1 liter, reduce the ingredient proportions accordingly. For example, use 10g caustic soda, 8g soda ash, and 80ml sulphonic acid with clean water.

What are the 2 ingredients for making liquid soap?

The two essential ingredients for making liquid soap are caustic soda (for saponification) and sulphonic acid (for foaming and cleaning properties).

Conclusion

Making 25 liters of liquid soap is both simple and cost-effective when done correctly. By using high-quality ingredients and following the right procedure, you can achieve a soap that is effective, foamy, and long-lasting. Whether for personal use or commercial purposes, this guide on how to make 25 liters of liquid soap ensures you produce a reliable and efficient product. Follow these steps carefully, and you’ll have a well-balanced soap ready for use or sale.