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A Lifelong Brotherhood

Founded more than 100 years ago and guided by the concept that a fraternity was an academic organization, we are the only professional chemistry fraternity. With over 70,000 members, we bring together men and women pursuing a wide variety of chemistry-related careers.

The Founding Principles of Our Fraternity The Objects of the Fraternity:


To Bind

its members with a tie of true and lasting friendship.


To Strive

for the advancement of chemistry both as a science and as a profession.


To Aid

its members by every honorable means in the attainment of their ambitions as chemists throughout their mortal lives.

Why I aM A Brother of ΑΧΣ

Alpha Chi Sigma has allowed me to meet so many people I otherwise would have never met. Apart from the amazing relationships I have through the organization, it has allowed me to be a part of some of the best study groups. My quantum mechanics class at Georgia Southern was 98% full of Brothers. It made the class way more fun, and we helped each other get through it. Walking into class and seeing Brothers means you're guaranteed a great lab partner! 
Emily Marie Woodward Delta Gamma at Georgia Southern2012
42nd Annual Great Cardboard Boat Regatta
Chapter Spotlight
Beta Psi Chapter
Southern Illinois University

The Great Cardboard Boat Regatta

ΑΧΣ Brothers hosted the 42nd annual Great Cardboard Boat Regatta!

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Chapter Reports Due

Remember to submit all chapter forms & reports by June 15.

Submit Reports

Pledge Report Form

Due 6 weeks before initiation

Get the Form

2015 Scholar Award Winner Eric Alexy
Meet a Brother - 2015 Scholar Award Winner
Eric Alexy

Gamma Xi, 2011

Aberdeen IronBirds Baseball Outing 2015
Professional Spotlight
Delaware Valley Professional Chapter

Aberdeen IronBirds Baseball Outing 2015

Members of the Delaware Valley Professional Chapter enjoyed an evening together at the Aberdeen IronBirds minor league baseball game! 

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Get Involved

See how you can get more involved with the Fraternity.


Congrats to Newest Professional Representatives

Elected for 2016 - 2017

Meet the PRs!

Hungry Hungry Hippos
Chapter Spotlight
Beta Chapter
University of Minnesota

Pledge and Member Bonding Day

The Chapter hosts an events with the goal to increase bonding and familiarity between members and pledges before initiation.

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Contact a chapter to find local recruitment activities!

Contact Your Local Chapter

Pledge Process

View the steps of the Pledging Process. 

See Process

Current Sourcebook

Read the updated version of Alpha Chi Sigma Sourcebook. 

Learn More

Meet the SC Candidates
for the 2016-2018 term

SC Candidates

Alpha Chi Sigma Biennial Conclave

Alpha Chi Sigma Biennial Conclave Group Photo

Current Sourcebook

Sourcebook graphic

Upcoming Events

Jul 25
The 53rd Biennial Conclave

Conclave will be hosted at Alpha Omega Chapter at Georgia Tech.

Georgia Tech - Atlanta, Georgia

Sep 10
Kansas City Professional Chapter Annual Picnic

Kansas City Professional Chapter will be hosting their annual Picnic at Swope Park. Families are welcome! Contact Kyle Miller (kmiller8188@gmail.com) for more information!

Shelter #10, Swope Park - Kansas City, MO

View Full Calendar

Become a Brother of

Alpha Chi Sigma

Aside from the professional advantages, membership in ΑΧΣ provides the catalyst to form lifelong friendships. This doesn't end with graduation - it carries on through the years within the Professional Branch of the Fraternity. The rewards of the Fraternity are open to every pledge, collegiate Brother and professional member.

Connect With Us:

Alpha Chi Sigma

Alpha Chi Sigma

6296 Rucker Road, Suite B, Indianapolis, IN 46220 | (800) ALCHEMY (252-4369)