what is difference between acetone and dry acetone?
- Thread starter ifeelsorry
- Start date
It's all about water content. Dry is a colloquial term meaning anhydrous = containing no water. You want your acetone to be as pure as possible with as little water content as possible. Don't blindly purchase that "dry acetone". Instead, check the detailed specs or safety sheets and get the finest acetone you can find that you can afford. For the purposes of making 4-MMC acetone >99.5 % is completely fine and does not break the bank.
Generally any Acetone which comes in a metal can is anhydrous enough for your purposes.
As those cans rust like mad in the presence of water and for this reason only solvents which are essentially free of water are sold in tin cans.
This is more reliable then what a seller claims. I not so long ago bought some IPA off Amazon which was labeled and sold as 99.98% IPA. Came out it was not only not dry but more like 30% water, and there were even more adulterants present. It was very cheap. Well it would have been cheap if it had not been useless. So sellers can and do mislabel solvents, but they cannot cheat a can - this rusts with water and thats it.
As those cans rust like mad in the presence of water and for this reason only solvents which are essentially free of water are sold in tin cans.
This is more reliable then what a seller claims. I not so long ago bought some IPA off Amazon which was labeled and sold as 99.98% IPA. Came out it was not only not dry but more like 30% water, and there were even more adulterants present. It was very cheap. Well it would have been cheap if it had not been useless. So sellers can and do mislabel solvents, but they cannot cheat a can - this rusts with water and thats it.
It would be better even to distill any acetone (even dry) before synthesis over P2O5 to remove any water and impurities.
I have certainly bought solvents at the very beginning of my career that were off the shelf, in cans, only to later realize that there was water present... because the fucking caps were not airtight.. so even though great advice, it is best to just make friends with any kind of business that orders chemicals and ask if you can order some solvents for construction purposes (just an example) along with them. They could leverage the price by doing you a favor, some people definitely do agree to such propositions. If they are a legit business owner, most likely they can request paper certificates for the products, no chemical company is gonna sell hundreds dollars worth of acetone and risk it, no serious company that is. They are very aware there are companies buying with special purposes (ex. production lines) and if they misled and were found at fault, the monetary consequences could ruin them.
As for buying the IPA off Amazon.. yeah, I bought Acetone off Amazon once and it came already colored yellow with sediments, was supposed to be ACS grade, so I feel you on that. I came to the conclusion it was not the optimal place to buy my supplies.
As for buying the IPA off Amazon.. yeah, I bought Acetone off Amazon once and it came already colored yellow with sediments, was supposed to be ACS grade, so I feel you on that. I came to the conclusion it was not the optimal place to buy my supplies.
-
NEW VIDEO
MDA Synthesis. Part 1 of 3.