- Formerly known as SAACS, (Student Affiliate of the American Chemical Society),
this organization is now known as a student chapter of the ACS,
or sometimes ACStudents.
- Union's ACS student chapter has won the highest achievement of outstanding chapter from the American Chemical Society for the past 11 years
- Chemistry majors and minors may join the club
- Throughout the school year, ACStudents participates in numerous social, scholarship, and service events. Some of these activities include the annual professors vs. students volleyball game, trips to scientific meetings, participation in the West Tennessee Regional Science Fair and participation in the Jackson, Tennessee environmental fair.