It is possible to vent this product in a safe atmosphere. As listed on the Safety Data Sheet, use only outdoors or in a well-ventilated area.
Please read carefully through the Safety Data Sheet for this product:
https://www.sigmaaldrich.com/sds/aldrich/540021
For further questions or concerns, please navigate to the link https://www.sigmaaldrich.com/techservice, and click on "Product Technical Inquiries" under the Products Section with all the required information so that a member of the Technical Service team can reach out to assist further. Thank you.