As a leading manufacturer over 20 years. Our exquisite craftsmanship can meet all your requirements!
You are here: Home » Blog » How to produce naphthalene ball

How to produce naphthalene ball

Views: 24     Author: Site Editor     Publish Time: 2023-06-13      Origin: Site


facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
sharethis sharing button

How to Produce Naphthalene Balls

Naphthalene balls, also known as mothballs, are commonly used for their strong and distinctive odor to repel pests like moths and insects. They are widely used to protect clothes, fabrics, and other stored items from damage caused by pests. While naphthalene balls are readily available in the market, some individuals prefer making them at home for various reasons. In this article, we will guide you through the process of producing naphthalene balls in a simple and cost-effective manner.


Naphthalene balls have been used for generations to keep clothes and fabrics safe from pest infestation. These small, white balls are made from naphthalene, a chemical compound that easily sublimates, meaning it turns from a solid into a gas without going through a liquid phase. The strong odor emitted by naphthalene balls repels pests, making them an effective solution for moth and insect control.

What are Naphthalene Balls?

Naphthalene balls are solid white balls that are composed of naphthalene, a naturally occurring compound derived from coal tar. They are primarily used for their insect-repellent properties and are commonly placed in closets, drawers, and storage boxes to protect clothes and other items from moth damage. Naphthalene balls slowly release gas that creates a strong odor, which acts as a deterrent to pests.

Importance of Naphthalene Balls

Naphthalene balls play a crucial role in preventing moth infestations and preserving textiles. Moths are attracted to natural fibers such as wool, silk, and cotton, and their larvae can cause extensive damage to clothing and fabrics. By using naphthalene balls, you create an inhospitable environment for moths and other insects, thus safeguarding your belongings from potential harm.

Safety Precautions

Before we dive into the process of producing naphthalene balls, it's important to note some safety precautions:

  1. Ventilation: Ensure you work in a well-ventilated area or use a fume hood to prevent the accumulation of naphthalene vapors.

  2. Protective Gear: Wear gloves, safety goggles, and a mask to protect yourself from direct contact with the chemicals and fumes.

  3. Keep Away from Children and Pets: Naphthalene balls are toxic if ingested, so it's essential to keep them out of reach of children and pets.

Materials and Equipment

To produce naphthalene balls, you will need the following materials and equipment:

  • Naphthalene flakes

  • Mold (e.g., silicone ice cube tray or small plastic containers)

  • Heat-resistant container

  • Double boiler or improvised water bath

  • Stirring utensil

Step 1: Gather the Ingredients

To begin the process, gather all the necessary ingredients. You will need naphthalene flakes, which can be obtained from chemical supply stores or online retailers. Ensure you have a sufficient amount of naphthalene flakes to produce the desired number of naphthalene balls.

Step 2: Prepare the Mold

Choose a suitable mold for shaping the naphthalene balls. A silicone ice cube tray or small plastic containers can serve as effective molds. Make sure the mold is clean and dry before proceeding to the next step. The size and shape of the mold will determine the final size and shape of the naphthalene balls.

Step 3: Melt the Naphthalene

Take a heat-resistant container and place it in a double boiler or improvised water bath. Add the naphthalene flakes to the container. Heat the water in the double boiler or water bath and allow the naphthalene flakes to melt gradually. Stir the mixture occasionally to ensure even melting.

Step 4: Pour the Mixture

Once the naphthalene flakes have completely melted, carefully pour the liquid mixture into the prepared mold. Take caution to avoid spills or burns, as the mixture will be hot. Fill each section of the mold evenly, ensuring the naphthalene mixture covers the entire space.

Step 5: Cooling and Solidifying

Allow the filled mold to cool and solidify. You can place the mold in a cool, well-ventilated area or in the refrigerator to speed up the process. The naphthalene balls will gradually solidify as they cool down. It may take several hours for the balls to fully harden.

Step 6: Unmold and Store

Once the naphthalene balls have hardened, carefully remove them from the mold. Gently push on the back of the mold or twist it slightly to release the balls. If using a plastic container, you can flex the sides to loosen the balls. Collect the produced naphthalene balls and store them in an airtight container or resealable bag.

Tips for Using Naphthalene Balls

  • Place the naphthalene balls strategically in areas where clothes or fabrics are stored, such as closets, drawers, or storage boxes.

  • Use an appropriate number of balls depending on the size of the storage area and the amount of clothing or fabrics present.

  • Replace the naphthalene balls periodically to ensure their effectiveness. Over time, the balls will sublimate, reducing their size and odor.

Alternative Methods

While the above method provides a simple way to produce naphthalene balls, there are alternative methods you can explore. Some people prefer adding fragrance to the naphthalene mixture to impart a pleasant scent to their stored items. You can experiment with adding a few drops of essential oils or fragrance oils during the melting process to achieve scented naphthalene balls.


Producing naphthalene balls at home can be a cost-effective and customizable solution for pest control and fabric preservation. By following the outlined steps, you can create your own naphthalene balls using readily available materials. Remember to prioritize safety precautions during the process and use the naphthalene balls in accordance with the instructions provided.


  1. Are naphthalene balls harmful to humans?

Naphthalene balls can be harmful if ingested or inhaled in large quantities. It's important to keep them out of reach of children and pets and use them in well-ventilated areas.

  1. Can I use naphthalene balls for pest control?

Yes, naphthalene balls are commonly used for pest control, particularly to repel moths and      insects. They emit a strong odor that acts as a deterrent, preventing pests from infesting clothes and fabrics.

  1. How long do naphthalene balls last?

The longevity of naphthalene balls depends on various factors, including the storage conditions and the size of the balls. On average, they can last for several months to a year. It's recommended to replace them when their size significantly reduces or their odor diminishes.

  1. Can I make scented naphthalene balls?

Yes, you can add fragrance to the naphthalene mixture during the melting process to create scented naphthalene balls. Essential oils or fragrance oils can be used to impart a pleasant scent to the balls.

  1. Where can I buy naphthalene balls?

Naphthalene balls are widely available in stores that sell household supplies, pest control products, or laundry items. They can also be purchased online from various retailers.

Apply Our Best Quotation
Contact us


Quick Links

Contact Us

Aozun Chemical                   
Your trustworthy chemical brand
Add: 128-1-16 HuaYuan Street, Wujin District, Chang Zhou City, China.
TEL: +86-519-83382137  
TAX: +86-519-86316850