Anti-freeze will become mixed with regulated heavy metals such as lead, chromium, or cadmium during normal use.  It may also contain contamination from brake cleaners and other solvents from incidental contact.  For this reason, a hazardous waste determination must be made on used anti-freeze to ensure proper disposal.  Contact EH&S’s Chemical and Radioactive Waste Disposal group for assistance in making the determination. 

Used anti-freeze should be stored in an area with appropriate secondary containment and with protection from the weather. Secondary containment must be kept free of spills and debris.

Anti-freeze containers must stay closed at all times unless you are adding more anti-freeze to the container.

Label containers with the words “Used Anti-freeze”.

Proper recycling of used anti-freeze is encouraged.  There are waste anti-freeze service companies that will service and recycle your anti-freeze.  Copies of all notices, certifications, waste analysis data and other documentation must be retained for five years from the date that the waste was sent to a recycling facility. Contact EH&S at (352) 392-8400 to get a list of vendors approved for recycling anti-freeze.