Maddie James
Candle wax can be made from a variety of substances, including animal, vegetable, or petroleum sources. The earliest candles were made from natural fats, tallow, and beeswax. Tallow, derived from animal fats, was the standard candle wax used in Europe and the Americas until the 18th century when the whaling industry led to the development of spermaceti wax, which was cheaper and burned cleaner. Today, paraffin wax, derived from petroleum, is the most commonly used candle wax due to its affordability and strong scent, although it is less environmentally friendly than plant-based alternatives.
| Characteristics | Values |
|---|---|
| What is candle wax made of? | Hydrogen and carbon atoms (hydrocarbons) |
| What does the wick do? | The wick draws the liquid wax up into the flame through capillary action |
| What happens when the wax reaches the flame? | The wax vaporises and combusts, reacting with oxygen in the air |
| What is produced when the wax combusts? | Carbon dioxide and water vapour |
| What happens to the carbon dioxide and water vapour? | They are released into the air and mix with the surrounding molecules |
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What You'll Learn
Animal fats, including tallow and whale fat
The use of tallow for candles was replaced by whale fat in the 18th century with the growth of the whaling industry. Whale fat, or spermaceti, is an oil derived from the head of the sperm whale. Spermaceti was the first candle substance to be available in mass quantities and was widely used until the mid-19th century when it was replaced by stearin wax and paraffin wax. Whale fat candles were not only used in the modern era; there is textual evidence that candles may have been made from whale fat in the Qin dynasty (221–206 BCE) in China. Historian Sima Qian also stated that the mausoleum of Qin Shi Huang (259–210 BC) contained candles made from whale fat.
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Insect waxes, including beeswax
Beeswax is a natural substance produced by bees to construct honeycomb in a hive. From any given hive, a beekeeper can typically harvest about 1-2 pounds of beeswax for every 100 pounds of honey harvested. Beeswax is the least processed of all candle waxes and has several desirable properties. It is a humectant, preventing moisture loss, and has anti-inflammatory properties, reducing redness and swelling. Beeswax candles produce a sweet scent and a brilliant golden light. They also burn slightly cleaner than paraffin wax candles, producing less soot.
Making candles from beeswax can be a rewarding experience, but it requires patience and careful attention to the process. The wax melting process is time-consuming and must be done correctly to avoid burning the wax or altering its natural scent and colour. A double boiler is recommended to melt the beeswax, and it is important to avoid direct heat. The melted wax can then be combined with coconut oil and essential oils to enhance the fragrance. The addition of coconut oil also helps to improve the scent's longevity, as beeswax does not hold onto scents as well as other waxes.
When making beeswax candles, the choice of wick is crucial. The size of the wick depends on the diameter of the candle, and wider candles often require multiple wicks. Testing different wicks is essential to finding the right one for your candle. It is recommended to burn candles for an hour per inch of diameter to determine the appropriate wick size. Additionally, the cooling process is important, and candles should be placed in a warm area to harden gradually to prevent cracking.
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Vegetable waxes, including soy and palm
Soy wax is a popular choice for candle makers due to its ease of use, cost-effectiveness, and ability to create high-quality candles. It is known for its clean burn, excellent fragrance retention, and relatively smooth texture. Soy wax has a lower melting point than some other waxes, which may cause candles to soften or melt in warmer climates. Additionally, soy wax can sometimes produce a ""frosting" effect that alters the candle's appearance without affecting its performance.
Soy wax is available in various forms, such as flakes and pastilles, making it easy to handle, measure, and melt. It is also a renewable and natural resource, making it a healthier option for candles. Soy wax can be blended with other waxes to create unique candle characteristics and improve its performance.
Palm wax is another vegetable wax option that is created by hydrogenating palm oil or separating it into solid and liquid fractions. It is a more economical, natural, and sustainable alternative to petroleum-based products, containing no ingredients of animal, mineral, or petroleum origin. Palm wax is an excellent choice for outdoor and church light candles, offering a beautiful crystalline finish.
Both soy and palm waxes were developed for commercial use in the candle market during the late 1990s. They provide eco-friendly and non-toxic options for candle makers and consumers who prefer plant-based alternatives.
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Petroleum byproducts, including paraffin wax
Paraffin wax, also known as petroleum wax, is a soft, colourless, odourless, and flavourless solid derived from petroleum, coal, or oil shale. It consists of a mixture of hydrocarbon molecules containing 20 to 40 carbon atoms. Paraffin wax is solid at room temperature and has a melting point between 37°C and 68°C, depending on its specific composition. Its boiling point is above 370°C.
Paraffin wax is a byproduct of the petroleum industry, which has a negative reputation due to its environmental impact. However, using byproducts like paraffin wax can be considered more sustainable than letting them go to waste. Paraffin wax became the standard candle wax in the Western Hemisphere due to its clean burn, low odour, and low cost. It was first created by Carl Reichenbach in Germany in 1830, marking a significant advancement in candle-making technology.
Paraffin wax has a variety of applications beyond candle-making. It is used in cosmetics and skincare products, providing texture and consistency to items like lipsticks, lip balms, and moisturisers. It is also utilised in histology and pathology laboratories to impregnate tissue samples prior to sectioning. Additionally, paraffin wax serves as an effective electrical insulator, lubricant, and heat storage material.
The manufacture of paraffin wax is closely related to the production of lubricating oils. The raw distillates and residual oils from petroleum contain wax and are typically solid at ambient temperatures. To create paraffin wax, the slack wax is heated, mixed with solvents, and then cooled. As it cools, the wax crystallises, separating from the oil. The mixture is then filtered into solid and liquid streams, and the resulting products are called "product wax" or "press wax" and "foots oil," respectively. The wax may be further processed to remove colours and odours, and it can be blended to achieve desired properties such as melting point and penetration.
While paraffin wax has become a common material in various industries, it is important to note that it is a byproduct of the non-renewable petroleum industry. The environmental concerns associated with petroleum extraction, including habitat destruction, water pollution, and ecosystem disruption, are significant. As a result, some individuals may prefer to avoid products derived from petroleum, including paraffin wax.
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Ancient methods, including boiling cinnamon
Candle-making has a long and storied history, dating back to ancient civilizations when candles served as the primary source of light for homes and played a crucial role in cultural ceremonies and spiritual practices. Over the centuries, various methods and materials have been employed in the art of candle-making.
In ancient times, several civilizations utilized different techniques and materials to craft candles. The Romans, often credited with the invention of candles, employed tallow (animal fat) and beeswax to create dipped candles. However, evidence suggests that the ancient Egyptians, Japanese, and Chinese also employed wicks in their candles. As early as 3000 B.C., Egyptians used wicks, while the Chinese utilized rice paper wicks with wax derived from insects and seeds. The ancient Japanese crafted wax from tree nuts, and the Indians produced wax by boiling the fruit of the cinnamon tree.
The use of moulds for candle-making emerged in the 14th century, revolutionizing the craft. The industrialization of candle production in the mid-19th century further transformed the industry, with the invention of machines that enabled continuous production. This mass production made candles more affordable and accessible to the general public.
The development of new waxes for candles has been influenced by the availability of raw materials and the ease of processing them into suitable wax. For example, tallow was widely used in Europe and the Americas until the 18th century when the whaling industry spurred the use of spermaceti wax, derived from sperm whales. This wax burned cleanly, produced a brighter light, and had a pleasant odour, making it a preferred alternative to tallow.
The ancient methods of boiling cinnamon involved using the wax from boiling the fruit of the cinnamon tree to create temple candles in India. While specific details of the process are scarce, it is known that cinnamon has been an important component in candle-making for various ancient civilizations.
Today, candle-making has evolved into both a functional and decorative art, with fragrances and eco-friendly materials taking centre stage. While the primary use of candles for lighting has been superseded by modern inventions, candles continue to hold cultural and spiritual significance, with their warm glow and soothing fragrances enhancing various rituals and ceremonies.
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Frequently asked questions
The wax is drawn up into the wick where the heat of the flame vaporizes the liquid wax, turning it into hot gas. This hot gas then reacts with oxygen in the air to form water vapour and carbon dioxide.
Candle wax is primarily composed of hydrocarbons, or molecules made up of hydrogen and carbon atoms.
When the combustion is complete, each carbon atom in the wax combines with oxygen to form carbon dioxide, and each hydrogen atom combines with oxygen to form water vapour.
