What happens if the de-icing fluid freezes before application?

When de-icing fluid freezes before application, its effectiveness is compromised, making it unsuitable for use. De-icing fluids are specifically formulated to lower the freezing point of water and prevent ice from forming on surfaces such as aircraft wings. If the fluid freezes, its chemical properties are altered, which can result in reduced or completely lost ability to melt ice upon application. The intended action of the fluid—creating a thawing effect and preventing further accumulation of ice—is significantly hindered when the fluid is in a frozen state. Therefore, using de-icing fluid in this condition would not provide the safety and performance needed for effective de-icing operations.