Extracting caffeine with methylene chloride--- make money online

In a previous video, I showed how to extract caffeinated water from green coffee beans with supercritical CO2.  Here, I show how to extract dry caffeine crystals from the caffeinated water (ie coffee, in this case).  I used a vacuum filtration setup to create very strong coffee, then mixed it with methylene chloride in a seperatory funnel.  The methylene chloride sinks below the water, taking most of the caffeine with it.  By opening the funnel carefully, only the

methylene chloride and caffeine can be transferred to a flask where the methylene chloride is boiled away.  I then mounted a test tube in a rubber stopped and filled the tube with ice.  With the stopped in the flask, I evacuated the flask and applied heat.  The caffeine will sublimate and collect on the cold test tube. I scraped off the caffeine and measured the mass.

I just love glassware hey everyone in a

previous video I showed the first half

of this caffeine extraction experiment

where I used supercritical carbon

dioxide to extract caffeine from green

coffee beans and at the end of the video

I said that I used methylene chloride to

extract the caffeine from that sort of

caffeinated water that I pulled out of

the supercritical chamber so here we

have the caffeine that I just extracted

today this is from coffee which I'll get

into in a minute and this is the batch

from last time from the from the green

coffee beans so as you can see there's

quite a bit more impurities in the batch

I made today so let me show you the

process and explain why it looks like

that so I started with about 50 grams of

ground coffee this is a medium roast

Columbian there and just ground it

pretty much about as coarse as I would

do for drip coffee maybe a little bit

finer but not as fine as espresso grind

so it's kind of mid-range and I loaded

the coffee into a vacuum filtration set

up and I used 11 micron filter paper and

sprayed a little bit of just water down

first just to keep the filter paper down

pulled down onto the bill canor funnel

and applied vacuum I use the vacuum pump

from my electron microscope good dual

use there it's a Welsh 1,400 rotary pump

and started pumping the system down and

what I would do is I'd boil some extra

water and then poured the water over the

top of the coffee grounds to help wash

more and more caffeine off of them

so my separatory funnel can hold a 250

milliliters so my goal is to get you

know about 200 milliliters of water

through there and you can search around

on the net for your own references on

how much caffeine will actually dissolve

into water based on temperature it's

kind of hard to find a graph so I used

almost boiling water to you know set 80

degrees C or 90 degrees C water to pour

through the coffee grounds to try to

extract as much caffeine as possible so

what I ended up with is 200 milliliters

of

a very very strong coffee this actually

didn't taste this unfortunately I didn't

even think of it I was kind of

distracted with other stuff but I'm sure

that would be the strongest even

stronger than espresso coffee there 50

grams of coffee into just 200 mils of

water

so it should be possible to boil all

that water away and be left with

caffeine crystals in the bottom of the

flask but typically people don't do this

one because it would take a long time to

boil away all the water and also when

the water boils away I think you're left

with sort of Atari substance kind of a

very sticky goo the caffeine crystals

don't form very well when they're boiled

out of water I think this is I'm kind of

you know guessing a little bit here so

the accepted method of doing this is to

mix the caffeinated water the aqueous

solution with a hydrocarbon solvent and

one popular solvent is methylene

chloride so this is the active

ingredient in paint stripper aggressive

paint strippers you know old-fashioned

paint strippers and it's also the

ingredient in acrylic cement so I may do

a future video on how to extract

methylene chloride from the acrylic

cement it's only you can almost use it

as is it's almost pure methylene

chloride it's like 70 between 70 and 90

percent and the remainder is

trichloroethane and a methacrylate

monomer very they're all volatile so you

can separate it out and I'm pretty sure

methylene chloride is the lowest boiling

solvent in there so it should be fairly

easy to extract but I'll do a future

video on that if people are interested

so the idea is to add some methylene

chloride to the separatory funnel along

with the aqueous solution of caffeine

and by mixing it around a bit all the

caffeine will be transferred into the

methylene chloride because it has a much

higher affinity for dissolving caffeine

and then by emptying the separatory

funnel carefully you can extract the

caffeinated methylene chloride and when

you boil away the methylene chloride

you're left with really nice crystals of

caffeine now there'll be some impurities

of course because the coffee other

substances in the coffee water are

dissolved into the nest

and chloride as well so the way to fix

that is to perform a sublimation

purification caffeine sublimates at

about a hundred and seventy degrees C

and so by pulling the chamber down with

vacuum and placing a test tube in the

top loaded with ice and then heating up

the outside of the of the flask the

caffeine will sublimate off the walls of

the flask and then its Risa Lydda Phi on

the cold test tube that's in the middle

so this is a really good way of

purifying if the impurities will stay in

the flask and the caffeine in theory

will be transferred to the test tube so

in my case there were definitely some

impurities that were also transferred

along with the caffeine that obviously

had a lower sublimation point or a lower

boiling point than the caffeine a little

hard to quantize but anyway I scraped

the caffeine off of the test tube after

letting it cool down and measured it in

got about about 260 milligrams which is

not a great yield out of 50 grams of

coffee that's probably on the order of

you know between five and ten cups of

coffee there and each cup of coffee

should probably have a hundred

milligrams of caffeine or at least

that's the the common knowledge or the

common numbers on the Internet so in

theory there should have been between

500 grams an anagram or 500 milligrams

and a gram of caffeine available so I

pulled out 264 you know it's it's not

terrible but I was kind of expecting a

little bit more okay well I have some

plans for this caffeine which will come

up in a future video but let me know if

you guys have any suggestions about that

as well go Gabe see you next time byeTop Search Keyword : online earning, , make money online, earn money online, online earning, online earning sites, make money online free, online money income, earn money online free, money online, best way to earn money online, online income site, money earning websites, best online earning sites, easiest way to earn money online, earn money payment bkash, online money income site