copy a section from another .tex file

I’ll try my best to explain..

I need to make a LaTex document every week for a lab. In it, I have the safety sheet of chemicals. Often, I’ve already done a chemical in an earlier document.
Now, I just go back to that document and scroll a bunch to find that section and copy-paste it. However, the amount of documents begin to pile up and it takes a lot of time.

In one document there are about 10 chemicals every time. If I save them all in seperate files, I’m giving myself more trouble with the preamble, and then I also have a LOT of files.

Is there any possibility to reference to a section of another document and that it just automatically copies?