Safety & Sustainability

Teachers should be knowledgeable about the potential hazards (both chemical and physical) that are present in a teaching chemistry laboratory. It is important that teachers model best practices for their students, incorporate chemical safety principles into lessons, and enforce safety expectations with a conscious and consistent effort.
 
The aim of this section is not meant to be an exhaustive source of information on laboratory safety. Rather, the goal here is to provide teachers, administrators, and school personnel with a “big picture” overview of the potential risks involved, and current best practices and resources.

For information on recommendations regarding specific kinds of safety equipment, see the Lab and Safety Equipment section, and the ACS Center for Lab Safety resources available about training in Safety and Sustainability.

Person wearing gloves pipetting liquid into a petri dish

The “RAMP” Principles for Safety

In 2016, ACS released updated safety guidelines (PDF) for schools, which are based on RAMP safety procedures.16 RAMP is an acronym designed to help teachers and students keep laboratory safety prominent, simple, and familiar:

  • Recognize the hazards
  • Assess the risks of the hazards
  • Minimize the risks of the hazards
  • Prepare for emergencies

RAMP represents a comprehensive risk management framework utilized in laboratories where chemicals are used to systematically identify hazards, assess and minimize risks from these hazards, and prepare for potential emergencies. The updated safety guidelines include hazards and risks in the laboratory, a list of appropriate laboratory safety equipment, safety rules and procedures, and emergency responses for middle and high school.

Teachers should use the guidelines to perform complete risk assessments for experiments and demonstrations. The ACS website also includes additional resources helpful in communicating the RAMP principles, on its “What is RAMP?” and Safety Videos & Webinars pages.
 

RAMP Poster

Download the Safety Guidelines and the RAMP Poster to help keep laboratory safety prominent.

Environmental Considerations

Teachers should consider a variety of factors to make chemistry as “green” as possible when designing or choosing a laboratory activity. A number of green chemistry resources are available to help teachers choose experiments that are appropriate for the learning objectives, but have minimal environmental impact.

The ACS Green Chemistry Institute and Beyond Benign provide some resources that support green chemistry practices. Teachers should also familiarize themselves with ACS recommendations regarding the handling of restricted-use chemicals (see the Chemical Storage and Hazardous Waste and Disposal Considerations sections). 

In short, with a little planning, teachers can introduce greener practices for their laboratories that also happen to provide educational benefit to students.

Going Small to Go Green

One effective way for teachers to “go greener” is to reconsider the scale of quantities used, the amount and category of waste generated, and the proper in-class disposal methods for chemical waste.
 
Microscale investigations, which require smaller amounts of chemicals, can be a winning strategy. They help reduce the amounts of reactants used and products created and waste generated, making cleanup quicker and easier. In addition, the smaller scale involved can often allow time and resources for more trials, giving students and teachers larger and more robust datasets.

ACS Green Chemistry Institute
Beyond Benign logo

Safety Instructions

If practical and allowable under the teacher’s school district’s policies, safety instructions and labels on laboratory safety equipment should be available in the language of students whose first language is not English. These instructions should be prominently displayed and printed copies should be provided to the students. NOTE: There can be different policies on this matter from one district or school system to the next, so teachers should be aware of their own district’s policies.

Special Safety Update on “Rainbow” Demonstrations

Many instructors have carried out the classic “rainbow demonstration” (essentially a macro-scale flame test for cations) in unsafe ways in recent years, often resulting in serious injuries. ACS has released a safety alert that advises how to conduct the investigation in a safe way.


References

16 American Chemical Society. “Guidelines for Chemical Laboratory Safety in Secondary Schools.” Available at www.acs.org/content/dam/acsorg/about/governance/committees/chemicalsafety/publications/acs-secondary-safety-guidelines.pdf (accessed Mar 27, 2024).

Download ACS Guidelines and Recommendations for Teaching Middle and High School Chemistry

An essential resource for middle and high school physical science and chemistry teachers, curriculum developers, principals, and other school administrators who support teachers in those roles.

Learn about the nature of instruction, the core ideas to teach, the physical instructional environment, safety, sustainability, and the professional responsibilities of teachers.