Daily Archives: September 22, 2016

Hunting for what E2 is: Freon 12

Legacy Perfluorocarbons

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.

E2_ball_stick_moleculeE2_ball_line_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

Acronyms are now anacronisms!

Rants

My premise is that we have rendered the acronym as a useless tag, just by sheer number — and incidence they are without meaning anymore. 

for example: ATP  –  adenosine triphosphate, Association of Tennis Professionals, ATP Electronics, Accidental Tech Podcast, Association of Test Publishers, Assistive Technology Professionals, ATP Flight School,  etc etc etc,  so those of you out there who think that it is good for advertising to use an acronym are deluded.  A name and its logo need to have some reference that is clearly obvious, and the acronym alone will get you nowhere.

An acronym is a word or name formed as an abbreviation from the initial components in a phrase or a word, usually individual letters (as in NATO or laser) and sometimes syllables.

An anachronism is a thing belonging or appropriate to a period other than that in which it exists, especially a thing that is conspicuously old-fashioned.