What are the normal usages for different plastics? Are they safe for food storage?

In our daily life, there are many plastics, like plastic cups, plastic bottles, plastic bowls, plastic jugs, and so on. Some plastics are durable, they can be recycled for food or drink storage, but others might contain toxins and they are not suitable for reuse. These plastic containers are maybe very difficult to be disinfected. And after a long time, they may begin to collapse becoming very crispy. But in everyday life, how do we know which plastic bottles to store food in? As a general rule of thumb, in determining which plastics can be reused for food, we can determine that if the container initially contains food, it can be safely reused for food. I’m going to talk a little bit about the different types of plastic that are good for storing food, and then you’ll know what’s in what plastic, and simply decide if it’s good for storing food again.

PET or PETE.
PET is very transparent, tough, and has resistance to gas and moisture. Because of its characters, this plastic is commonly used to hold beverages such as soda, bottled water, or fruit juice. It is also ideal for foods such as peanut butter, salad dressings, and pickled pickles. But the plastic can still contain the smell of food stored last time.

HDPE
The plastic, which can be colored or translucent, is ideal for the temporary storage of foods such as milk or juice. Used containers should not be used to store food again. They can be used to store other things besides food, such as detergent.

PVC
When you think of PVC, you think of plastic tubes. It can be used in food or non-food products. If you are going to store food, make sure your canisters are free of other chemicals.

LDPE
The main form of this plastic in life is plastic bags. For example, dry cleaning bags, bread, and frozen food bags, which are not easy to clean, may not be the best plastic for long-term food storage. Usually disposable.

PP
The plastic has a wide range of applications, ranging from hard to soft, and can be used as a lid for yogurt containers, dish, butter pails, and medicine bottles, or as a lid for lunch boxes.

PS
It is transparent, hard, and brittle rigid plastic or foam. Typical uses include cups, plates, cutlery, and plastic boxes. Some can be used repeatedly, but some are disposable.

Other
This is a combination of two or more of the above. For food and food storage, it is usually used in 11L and 20L reusable water bottle jugs.

So after I introduced these plastic materials, do you learn more about these plastic materials?