Hold on, that stuff is dangerous, but I'll volunteer to safely dispose of it. I'll use it to carbonate kegs of beer and then it will be released very slowly, one pint at a time.
When can you send it over?
If you used it for beer, it'd still be in the environment. Your body just blows off by respiration, any of the CO2 you put in it. Whether it's the stuff you put in your stomach or the gas some GI doctors use now when you get a colonoscopy.
Mine used CO2 instead of air on the last photo session of my insides. Absolutely no bloated feeling or farting when I got off the table.
"...The “green technology first” uses carbon dioxide captured directly from the atmosphere to form the diamonds – which are chemically identical to diamonds mined from the earth – using wind and solar electricity, with water collected from rainfall...."