MSDS stands for Material Safety Data Sheet.
SDS stands for Safety Data Sheet.
It is the information needed to enable you to work safely with a raw material. It contains the safety information and any potential hazards associated with that material.
So what to do if you spill it, how to store it, fire safety advice, any limitations on use etc etc.
It is up to you to read this information so that you know how to act in case of emergency and we would recommend you do this for all of the raw materials you are using.
You will see that the term MSDS is being replaced by SDS (Safety Data Sheet) which is the new international format.