Heat transfer fluid, DOWCAL 200, 220кg/barrel DOWCAL™ 200 heat transfer fluid is a propylene glycol-based fluid that is low in acute oral toxicity, which makes it particularly suitable for applications where toxicity is a concern. In particular, it is suitable for heating, ventilating and air conditioning (HVAC) systems, ground source heat pumps, and solar panels. New, more than 1 barrel available. For bigger quantities contact deliyskyss@state.gov.