Be aware that all chemicals are hazardous to some degree, and protect yourself from accidental skin, eye and respiratory contact.
Know the hazards of the materials you are working with. If you are using an unfamiliar procedure or chemical, conduct a literature search for reports of known or suspected hazards. Material Safety Data Sheets, (MSDS), are an important primary source of information on physical properties, health hazards, reactivity, and spill cleanup procedures.