1- Sigma Aldrich is a popular chemical manufacturer. Go to the website (https://www.sigmaaldrich.com/united-states.html) and search for the chemical hydrochloric acid, ACS Reagent 37%. Open the Safety Data Sheet (SDS). Use the SDS to identify the NFPA rating for HCl.
Blank # 1: Health Rating
Blank # 2: Fire Rating
Blank # 3: Reactivity Rating