Self-heating food is a kind of convenience food. They don't rely on open fire and other common heating methods, but only need cold water to react with the self-heating bag in the bag to generate heat, so they can reheat the food. Common self-heating foods are hot pot, rice, porridge, rice noodles, soup and so on. When heating, ensure that the air holes or exhaust holes on the outer packaging are unobstructed, so as to avoid the danger of sudden cracking and scalding of the outer packaging due to excessive steam pressure.

When cold water reacts with the self-heating bag, such as adding hot water or boiling water, it is easy to cause the self-heating bag to expand or even rupture because of the rapid reaction. Special attention should be paid to self-heating foods. If there is powder leakage in self-heating packaging, do not use it. When using self-heating food, it is best to heat it on a heat insulation pad, not on glass, plastic and other countertops to avoid danger.

Pay attention to eating self-heating hot pot

Self-heating food is a special kind of food. The raw materials of self-heating package mainly include magnesium powder, iron powder, aluminum powder, quicklime and so on. These raw materials will produce a small amount of hydrogen when they come into contact with water. Therefore, when using self-heating food, you should try to choose a place with good air circulation. After the self-heating package is used, avoid secondary contact with water, resulting in secondary reaction.

In addition, you should also pay special attention when you want to eat self-heating food on business trips and travels. Magnesium powder and aluminum powder belong to aviation dangerous goods, and the Civil Aviation Administration of China explicitly prohibits carrying and consigning them. The gas generated in the heating process of self-heating food may cause smoke alarm, and the use of self-heating food is explicitly prohibited on the train.