Making Soy Candles And Stearic Acid


Soy wax is a type of candle-making wax made from the oil of soybeans. It is an all-natural, biodegradable, renewable source with low carbon footprint compared to paraffin. The soy wax has many benefits, including improved scent throw and better burning qualities that produce minimal smoke and soot fumes while burning. Soy candles last up to four times longer than traditional paraffin candles and are moisture resistant. Soy wax also can be used as a natural putty or thermoplastic consisting of polyethylene glycols or stearic acid, both common additives in soy wax.

Stearic acid is widely used in cosmetics and personal care products as well as in food production; however, it is especially useful for candle making purposes due to its slow-burning properties. Stearic acid acts as an emulsifier for soy wax, meaning that when the two components mix together a reaction occurs that binds them together creating a single stable product that does not separate into its constituents during storage or application. Stearic acid also provides additional strength to the candle by maintaining its shape and integrity during burning ensuring that it does not deform due to heat from the flame. Furthermore, stearic acid helps extend the burn time of soy candles and creates a strong scent throw due to its slow-burning characteristics. As a result of this combination of properties, stearic acid is essential in providing quality finished soy candles that are both safe and visually pleasing when lit.

Benefits and Features of Making Soy Wax Candles

Making soy wax candles has several advantages over traditional paraffin or beeswax candles. Soy wax is a renewable, natural resource that is biodegradable and non-toxic. It burns slower than paraffin or beeswax, producing a longer lasting candle with a cleaner burn. While paraffin and beeswax candles may lose their scent over time, soy wax candles hold their scent better and emit a cooler flame while burning. Adding stearic acid to the melted soy wax boosts the hardness of the candle so it will last longer in warm temperatures. Stearic acid is a natural fatty acid found in many vegetable oils and animal fats and it helps stabilize the rate at which the candle burns for an even light that lasts throughout its life. Soy candles are also known for their longevity; they can last up to 50% longer than regular paraffin based ones. Finally, making soy wax candles is less expensive because stearic acid costs considerably less than beeswax or other additives used in making traditional candles.

Different Types of Soy Wax and Additives

Soy wax is a natural, renewable source for manufacturing candles that are eco-friendly. Made from hydrogenated soybean oil, soy wax burns longer and cleaner than paraffin wax candles, with minimal soot emissions. There are also less health risks associated with burning soy candles over other types.

When making soy candles, manufacturers can use different types of waxes and additives to create unique effects and qualities. For example, some candle makers add beeswax to the mix to increase burn time and to give the candle a nice scent throw. Others may decide to use vegetable oils such as sunflower or coconut instead of the traditional soybean oil. Additionally, some manufacturers may choose to add stearic acid or vegetable stearin which helps increase hardness and rigidity of the candle while providing better adhesion between layers. Waxes such as beeswax also help bind ingredients together while reducing frostings and cracking in the final product. Besides that, borates can be used in soy-based candles to decrease their melting points, allowing for easier pouring even during hot weather conditions. Other additives such as gel stabilizers, dyes for color coordination, scents for fragrance options and wick stiffeners round out what manufactures can do when making their own special blend of soy-based candles.

A Guide to Stearic Acid and its Benefits

Stearic acid is a naturally occurring fatty acid used to strengthen the formulation of soy candles. It is an important ingredient because it helps to improve the burning characteristics and provides structure to waxes, which are made mostly of vegetable oils. Stearic acid also has anti-fungal properties, so it can prevent the growth of mildew or mold during storage or extended burning time in your soy candle. It serves as a hardening agent in formation, and can make a soft candle harder for increased performance and optimal burning. It also helps keep your candle smelling strong over its lifetime. When used correctly, stearic acid tends to reduce possible smoke production while increasing fragrant oil concentration in waxes. Additionally, stearic acid works as a surfactant by reducing surface tension between water-insoluble substances such as scented oil molecules and vegetable wax molecules, thus allowing faster and easier oil absorption into the soy wax during production.

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Overall, the use of stearic acid in creating a soy candle is beneficial in various ways . It allows for better structuring and higher stability of the candle structure due to its hardened qualities , it can help provide longer lasting fragrance retention throughout different stages of its burning time ,it reduces smokiness , improves oil absorption rate during production , serves as an anti-fungal agent avoiding any eventual moulding problems during storage and improved overall scent diffusion from greater scent carrying capacity within the soy wax . All these benefits make stearic acid a great additive choice when creating unique handmade scented candles providing superior results with every burn !

Step by Step Process for Incorporating Stearic Acid and Soy Wax

1. Heat your soy wax and stearic acid over medium heat in a double boiler until it reaches a temperature of about 180°F (82°C).

2. While the wax is heating, begin preparing your containers for pouring by preheating them to 90-95°F (32-35°C). Wax poured at these temperatures will give you the best results in regards to shrinkage and curing time.

3. Once the wax and acid have reached their proper temperature, stir them together lightly with a metal spoon or craft stick to fully incorporate the stearic acid into the mixture.

4. Carefully ladle the hot wax mixture into your preheated containers while they are sitting atop something that can absorb their heat such as an old towel or newspaper.

5. Allow candles to cool completely before moving them which will help reduce any cracking or discolorations that could occur if moved too soon after pouring.

6. As candles cool, periodically monitor temperatures using an accurate thermometer and adjust preheated container temperatures if necessary to ensure an even rate of cooling so that air bubbles don’t form on top of the candle surface or cause them to sink in the middle as they harden.

7. When candles are room temperature and set, trim away any uneven edges from wicks with scissors or knife, then remove extra wick material from the top of each candle using tweezers for a neat appearance and improved burn performance of the final product.

Materials and Tools for Creating Custom Soy Wax Candles

Soy wax: Soy wax is a great choice for making candles that release a pleasant scent and can last for many hours. It is easy to work with and comes in many different forms, including flakes, beads and blocks. Furthermore, it is renewable and non-toxic.

Stearic acid: Stearic acid is a naturally occurring fatty acid used as a hardening agent when making soy candles. This helps make the candles more rigid and gives them greater structural integrity.

Fragrance oil: Fragrance oils are often added to soy wax candles in order to give them a lovely scent when they are lit. These should be specifically designed for use in candle-making and come in a range of scents such as floral, fruity or woodsy.

Candle wicks: Candle wicks provide heat to melt the wax so that it releases its scented fumes into the air. Cotton core braided wicks are popular for use in soy wax because they are durable, inexpensive and self-trimming.

Double boiler: A double boiler is used to melt the wax before adding any other ingredients such as stearic acid or scenting oils. By using this method instead of direct heat from an open flame, you can control the temperature more easily and reduce the risk of fire hazard or burning accidents.

Measuring tools: Measuring tools allow you to accurately measure out both large and small quantities of soy wax, stearic acid and fragrance oils when making your candles. They are important in ensuring that each batch of polished custom made devices works as desired!

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Creative Ways to Use Coloring and Accessorizing for Soy Wax Candles

For homemade soy wax candles, there are various options for accessorizing and incorporating different colors. One way to do so is by using mica powder. Mica powder is made from natural minerals and can be mixed with the melted soy wax prior to pouring it into the candle container. Different mica powders offer different levels of color intensity depending on their sparkle or shimmer, making them ideal for adding a little pop to any candle design.

Additionally, colored dye chips can also be added to the soy wax before it solidifies in the container. There are specially-made dye chips specifically created for use in wax candles that come in numerous vibrant hues, making beautiful designs and multicolor effects easy to achieve.

Using stearic acid is another creative way to add color to homemade soy wax candles. Stearic acid helps harden the wax and helps reduce crackling on top of the candle after it solidifies It also allows continuous scent release over an extended period of time when used as a harder measure alongside softer oils during the blending process. Furthermore, by adding small amounts of coloring agents meant specifically for stearic acid (which can sometimes be found naturally-derived), more interesting color takes form within the finished candles themselves.

Tips for Troubleshooting Difference Issues with Soy Wax Candles

If the soy wax candles are not burning correctly or the wick is having difficulty staying lit, the following are issues to consider:

• Trim the wick. To ensure an even, consistent and clean burning flame, trim the wick before each use. If the old burnt tip of a dried out wick is allowed to remain, it can affect how well a flame remains lit.

• Check if the correct type of wax was used. Soy wax blends that contain stearic acid produce better candles as this additive helps with increasing candle hardness while helping to reduce frosting and wet spots, which can both be caused by too much unrefined soy wax being used in a blend.

• Ensure proper curing time was observed when making candles. Allowing soy candles to cure for at least 72 hours will result in longer burning times and improved overall performance of your product. Improper curing could also lead to poor burning conditions and shortened life spans for your candles.

• Check for air pockets within the waxed container that may be preventing complete consumption of fuel (wax). This can cause an uneven burn resulting in tunneling or excessive carbon build-up on walls of container resulting in flaring of flame or smoke-outs during use. To prevent this, try double-pouring your poured containers so that all sides/walls come into contact with molten soy wax upon filling.


Making soy wax candles with stearic acid can be a fun and rewarding activity. Learning how to make soy wax candles is an art form that involves the careful blending of different ingredients. Through experimenting with various combinations of waxes, fragrances, and colors you can create unique scented works of art. Stearic acid is an important element in candle making as it helps create stability and structure in the candle. It also allows for increased strength when the hot wax is being molded into various shapes and containers. With practice, you can learn how to make beautiful candles that you can proudly display or give as gifts. In addition to fostering creativity, making soy wax candles with stearic acid can be educational as well. It teaches us about the science behind lighting a candle, something most people take for granted. By understanding how different elements react together we gain deeper knowledge and appreciation for this timeless tradition.

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