Det får man inte.

Disabling Chemicals & Other Dangerous Items Carry-on? Checked?
Chlorine for Pools and Spas NO NO
Small compressed gas cartridges
(Up to 2 in life vests and 2 spares. The spares must accompany the life vests and presented as one unit) OK OK
Fire extinguishers and other compressed gas cylinders NO NO
Liquid Bleach NO NO
Recreational Oxygen (non-medically required, flavored or canned oxygen containers) NO NO
Spillable Batteries - except those in wheelchairs NO NO
Spray Paint NO NO

http://www.tsa.gov/traveler-information/prohibited-items#9