Think back to the acronym BAMP: recall that A stands for "Assess the risks of hazards. What are the sources of information for recognizing hazards mentioned in the *Safety in Academic Chemistry Laboratories* PDF?
Your lab instructor
Actually experiencing the hazard first hand
Appendix A of your lab manual
The manufacturer's container label
Safety Data Sheets (SDS)
Globally Harmonized System of Classification and Labeling of Chemicals (GHS)