Certain features of will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Website Help System

Contacting Us

There are a number of ways that you can contact us at Sigma-Aldrich. For phone numbers, mailing addresses and e-mail addresses to the office nearest you, link to our Customer Service page.

If you have a specific inquiry or request, feel free to use our E-mail Customer Service or E-mail Technical Service forms. By using these forms, your request will be submitted to the appropriate office.

Ways to contact us: