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Propylene Glycol Coolant


Does anyone know what can be done with Propylene Glycol Coolant 
(product) that is used in chiller units and HVAC systems?  It is less 
hazardous than ethylene glycol, but its use is not as diverse.  It 
is not regulated, but will probably be shipped off as waste.  Any 
information would be helpful.


Marlyn Aguilar
Hawaii Dept of Health
Solid and Hazardous Waste Branch