The full name of antifreeze is antifreeze coolant, and it is commonly referred to as ethylene glycol antifreeze due to its primary composition of ethylene glycol. Therefore, in everyday life, few people are aware of ethylene glycol. Ethylene glycol antifreeze manufacturers play three roles: preventing freezing when the vehicle is not running, as the coolant is inside the cylinder block; when the liquid turns to solid, it expands, potentially cracking the cylinder block. Another role is to cool the engine after the vehicle starts, preventing the engine from overheating and causing damage. Antifreeze also manages rust prevention and prevents excessive scale buildup that could lead to pipeline blockages.

Antifreeze is a coolant primarily used for engine cooling. As it is intended for cooling the engine, it should always remain in a liquid state. However, during winter, due to low temperatures, ordinary coolant water tends to freeze, rendering the engine unable to cool. Therefore, antifreeze is essentially water mixed with anti-freezing substances, which prevents freezing at temperatures as low as minus 30 degrees Celsius, thus ensuring the engine's cooling function. In reality, this product should be called coolant, while "antifreeze" is a more common term.

However, the main material of the antifreeze is ethylene glycol, which operates on the principle of chemical compatibility with water, allowing it to lower the freezing point in any proportion. When the ethylene glycol content is 60%, the freezing point can be reduced to -48.3°C. Therefore, the raw antifreeze can be mixed with water in varying proportions according to the temperature variations in different regions, controlling the freezing point within an appropriate range.

Ethylene Glycol Antifreeze is the main component of antifreeze, accounting for approximately 92% to 98% of the antifreeze base. The antifreeze base can be mixed with water in varying proportions according to the varying temperatures in different regions, controlling the freezing point within an appropriate range. ***Antifreeze is a type of organic alcohol.

Since the 1950s, almost all countries have used ethylene glycol as an antifreeze. Ethylene glycol is a colorless, transparent, slightly sweet, and hygroscopic viscous liquid that can dissolve with water in any proportion. The freezing point of ethylene glycol varies with its concentration. The freezing point of ethylene glycol-water antifreeze solutions does not follow a linear relationship with the ethylene glycol mass fraction. The freezing point of its aqueous solution does not solely decrease with increasing concentration; when the concentration exceeds 70%, the freezing point actually rises. During the preparation process, it is necessary to make a reasonable choice based on practical considerations to meet the requirements for antifreeze properties and cost-effectiveness. In the south of Jiangnan, China, a 40% ethylene glycol mass fraction ratio is generally used, while in the cold north, a ratio of around 50% ethylene glycol mass fraction is more suitable.