Sichuan Wax

Sichuan Wax

　　Since Sichuan Province is the main production area of white wax, users commonly refer to white wax as "Sichuan Wax." Leshan Emei is also the primary production site for Sichuan Wax, yielding up to 100,000 tons annually. As a traditional Chinese specialty product, white wax is internationally known as "Chinese Wax." Additionally, it is referred to as wood wax (in the New Compendium of Materia Medica), tree wax (in the Chinese Pharmaceutical Encyclopedia), and wax salve (in the Chronicles of Sichuan Traditional Chinese Medicine).

Properties of White Wax

1. Chemical Composition of White Wax:

White wax is a high-molecular-weight chemical substance, primarily composed of 26-acid (C26H52O2), 28-acid (C28H56O2), 30-acid (C28H56O2), and 30-acid (C30H52O2), along with esters formed from 26-alcohol (C26H54O), 28-alcohol (C28H58O), and 30-alcohol (C30H62O), plus small amounts of stearic acid and palmitic acid. Its structural formula is: C25H51–C＝C–O–C26H58

2. Physicochemical Properties

White wax is hard, white in color, and has stable physicochemical properties. It has a higher melting point than other types of wax such as paraffin or beeswax, ranging approximately between 80°C and 83°C. It has strong coagulation power, is insoluble in water, but soluble in organic solvents such as ethanol, benzene, isopropyl ether, toluene, xylene, and ether. Therefore, it serves functions such as moisture-proofing, rust-proofing, anti-corrosion, gloss enhancement, and sealing.

Uses of White Wax

The uses of white wax are very broad. In the past, it was mainly used for making candles for lighting, in medicine, and for producing pill coatings. Today, with advancements in science and technology, it has become an indispensable and important raw material and additive in dozens of products such as military industry, light industry, chemical industry, and pharmaceuticals. It is also an export commodity. The main uses of white wax are as follows:

1. Industrial Uses.

In industry, white wax is the best material for casting molds in aircraft manufacturing, mechanical production, and precision instrument production. It is lightweight, smooth, non-deformable, and highly precise in shaping. Especially in the casting of aircraft parts, the addition of white wax can prevent the formation of bubbles. It serves as a moisture-proofing agent for various precision instruments and capacitors in the electronics industry, offering good anti-corrosion and insulating properties. It acts as a moisture-proofing, rust-proofing, and lubricating agent for metal products and defense equipment. In the paper industry, it is used as a gloss-enhancing agent and filler for certain products. When combined with white wax, it makes paper surfaces smoother, fibers denser, and increases durability. Products such as carbon paper, wax paper, glossy paper, candy paper, drawing paper, and high-grade coated paper all require white wax as a filler to enhance their gloss. In the light chemical industry, when producing waxed cloth, waxed thread, waxed rope, car wax, floor wax, etc., white wax is added to improve brightness. White wax is also a polishing agent for high-end furniture, utensils, and electroceramic powders. Applying white wax enhances aesthetics and maintains long-lasting gloss. Furthermore, white wax is an excellent gloss enhancer for the textile and leather industries, improving luster and toughness, increasing durability, enhancing appearance, and raising product quality.

2. Medical Uses.

In the production of both Chinese and Western medicines, white wax is used as a polishing agent and for coating pill casings, helping them remain preserved for a long time without molding, deteriorating, or losing efficacy. Li Shizhen’s “Compendium of Materia Medica” records that white wax is acrid-warm and non-toxic; it promotes tissue regeneration and stops bleeding, relieves pain, builds up weakness, and reconnects bones. When taken in pills, it kills parasites, and frequent application to the scalp can treat bald sores. Some ancient texts mention that white wax insects can invigorate circulation, nourish blood and the spleen, and treat certain internal and external medical conditions, such as hematuria and long-lasting suppurative sores that do not heal.