What is antifreeze chemical formula

Antifreeze is typically a mixture of distilled water with a base product - ethylene or propylene glycol. In some formulas a specialised inhibitor is also sometimes added to help protect system metals from corrosion.

The role of antifreeze has a dual purpose - lowering the freezing point of liquid in a cooling system as well as also raising the boiling temperature of water. Through this, an antifreeze solution helps keep cooling systems free flowing and clear of icy build-up during cold weather conditions as well as preventing any issues with over-heating. The main difference between propylene glycol and ethylene is the level of toxicity.

Propylene glycol has a very low toxicity, which is why it is also found in cosmetics and personal care products, whereas ethylene glycol is poisonous and must be handled with caution to restrict any human or animal exposure.

So why not just use propylene glycol? Antifreeze as we know it now has a wide number of uses. Antifreeze material safety data sheets list the compounds considered significant safety hazards when used according to recommendations, including sodium silicate, sodium borate, and denatonium benzoate.

You can find the material safety data sheets for antifreezes below. These MSDSs list the potential hazards including health, fire, reactivity and environmental hazards of antifreeze and how to use or work with it safely. The blog on chemicals. The blog, its authors and affiliates accept no responsibility for any accident, injury or damage caused in part or directly from following the information provided on this website.

We do not recommend using any chemical without first consulting the Material Safety Data Sheet which can be obtained from the manufacturer and following the safety advice and precautions on the product label. A solvent is a substance that is proportionally greater by volume or mass than the substance it dissolves, which A few weeks ago, we explored in detail what brick acid is. An antifreeze is an additive which lowers the freezing point of a water-based liquid. An antifreeze mixture is used to achieve freezing-point depression for cold environments and also achieves boiling-point elevation to allow higher coolant temperature.

Freezing and boiling points are colligative properties of a solution, which depend on the concentration of the dissolved substance. Because water has good properties as a coolant, water plus antifreeze is used in internal combustion engines and other heat transfer applications. The purpose of antifreeze is to prevent a rigid enclosure from bursting due to expansion when water freezes.

Less than that range will be inefficient in inhibition of metal corrosion and cavitation and over that range will only be uneconomical. A triazole or triazoles may be additionally blended, which effectively inhibit corrosion of metals, particularly copper and aluminum in a cooling system Such triazoles nay be benzotriazol, tolyltriazol 4-phenyl-1,2,3-triazole, 2naphthotriazol or 4-nitrobenzotriazol.

The triazole or triazoles may be blended in an amount of about 0. Less than that range will be insufficient in inhibition of metal corrosion and mare than that range will only be uneconormical.

Generation of nitrosoamine in the cooling liquid will be prevented by the absence of amine salts, while the absence of borates will contribute to lessen corrosion of aluminum and aluminum alloys. The compositions of Embodiments 1 and 2 were prepared according to the present invention and the compositions of Comparisons 1 to 4 were conventional compositions. Their respective ingredients are given in Table 1. As Table 3 clearly shows the weight reductions of Embodiments 1 and 2 were far smaller than those of Comparisons , showing that the compositions according to Embodiments 1 and 2 of the present invention are superior in cavitation inhibition to the conventional positions according to Comparisons What is claimed is: 1.

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