The FC 77, with the CAS registry number 52623-00-4, is also known as Fluorinert 77. This chemical should be sealed and stored in a cool and dry place. This chemical may cause long-term adverse effects in the aquatic environment. You should avoid releasing it to the environment, and you need to refer to special instructions/safety data sheet. This substance is an electrically insulating, stable fluorocarbon-based fluid which is used in various cooling applications. It is mainly used for cooling electronics.