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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
Alpha Omega Conclave Committee
Chapter Spotlight
Alpha Omega Chapter
Georgia Tech

53rd Biennial Conclave

Alpha Omega hosted the 53rd Biennial Conclave!

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Order Pledge Pins

Don't forget to order pledge pins.

Order Form

Pledge Report Form

Due 4 weeks before initiation

Fill out the Form



St. Louis Pro Group Photo
Professional Spotlight
St. Louis Professional Chapter

2016 Vincent A. Sedlak Award

St. Louis Professional Chapter won the Outstanding Professional Chapter Award!

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Get Involved

See how you can get more involved with the Fraternity.


Congrats to Newest Professional Representatives


Meet the PRs!

Great Lakes District Conclave
Chapter Spotlight
Great Lakes District Conclave
Hosted by Gamma Psi

Pledge and Member Bonding Day

The Great Lakes District Conclave was hosted by Gamma Psi at the University of Toledo on November 5!

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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

Meet the new SC
for the 2022-2024 term

SC Candidates

Download a full size of the Conclave Photo

Alpha Chi Sigma Biennial Conclave Group Photo

Current Sourcebook

Sourcebook graphic

Upcoming Events

Jul 15
57th Biennial Conclave

The 57th Biennial Conclave will be July 15-20, 2024, hosted by Zeta at the University of Illinois - Urbana Champaign.

University of Illinois - Urbana, IL

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)