Per a recent post  HERE about liquid breathing and E2 and the presence of an emulsified E2 within phagolysosomes seen with TEM, and the tendency for the smaller droplets to coalesce at some point into bigger droplets (judged only by time, since in a matter of 10 days post recovery from liquid breathing E2 for 3 hours) at 17 days recovery, the tiny droplets seen at 5 days of recovery are virtually non-existent.  So I was prompted to figure out the name for E2 (it has been 40 years since these experiments were performed with L. C. Clark, Jr. and there was no way I could remember what the acronyms stood for.

E2 was taken out of production in the 1990s in response to claims that it depleted the ozone layer (I have not researched this so I cannot give an opinion). IS THIS STRUCTURE E2?

Here is a summary, and a link to an interactive chemical image of E2, a list of names (actually a long list of alternative names) and a great ball and stick chemical image… showing both the chlorine and the fluorine atoms (both kind of greenish in color) that I found on wikipedia, along with the black and white diagram.

dichlorodifluoromethane,
E2
R 12
freon 12
CFC 12 (chloro fluoro carbon halo methane)
Dichlorodifluoromethane
Carbon dichloride difluoride
Dichloro-difluoro-methane
Difluorodichloromethane
Freon 12
R-12
CFC-12
P-12
Propellant 12
Halon 122
Arcton 6
Arcton 12
E940
Fluorocarbon 12
Genetron 12
Refrigerant 12