Is 99.5% acetone good enough?

Hey Folks,
I'm trying to buy acetone off Amazon.de and I'm having trouble finding large amounts of reasonably priced 100% acetone. I have found good deals on 99.5%. Is that close enough?

 

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I would believe so....however why can't you aquire it in Germany?
I would think shipping it from Amazon to be an issue due to its flammable nature.
A local hardware store should carry it there..Heck I buy mine at Walmart. .

 

They have it on Amazon(.de or Germany). I wanted to buy large quantities. It is much cheaper to buy 99.5 than 100% for some reason. I wanted to see if the .5% mattered.

 

Do they mention what the other 0.5% consists of?

 

Unfortunately not. It does, however clarify that it is Dimethylketon. I'm no science guy so now I'll need to research if what they say is true and acetone is an everyday term for that word.

 

Yep, dimethylketone is a synonym for acetone. Acetone has a C double bonded to an O, with two methyl groups attached to the C. Since the C double bonded to the O is not on the end of a chain of carbon atoms, it's referred to as a ketone (if the C=O was at the end of a chain of carbons it'd be an aldehyde). Therefore it's dimethylketone.

CH3
\
C=O
/
CH3

I wonder if the other half percent is water? If it was, I don't think it would be too problematic but wait for other opinions.

 

If you search the MSDS sheet it says Dimethylformaldehyde. As most chemical have
several names. And not all are listed on the sheets.
http://www.sciencelab.com/msds.php?msdsId=9927062

 

Thank you for the input!

 

Yes, it's fine. What you don't want is the 80% with fragrances and other additives used as nail polish remover.

 

Reagent grade acetone, as defined by ACS (see link) requires minimum 99.5% purity as far as acetone content goes. However, the nature of the 0.5% impurity has specified limits. There are purer grades of acetone, such as those labeled suitable for HPLC, but the price goes up steeply. Acetone sold in hardware stores is pretty good stuff; you can usually access the Safety Data Sheets online. In the US, the ones I've seen list 100% for the acetone content; so with rounding in mind, that means 99.5% or better. Main difference between hardware store acetone and reagent grade is that the latter had been put through a battery of tests dealing with the impurities.

Remember the stuff burns really well and the vapors can be explosive.

Coins that have a layer of oil or varnish may appear different once it is removed by acetone. Copper may react with acetone in the presence of heat or UV light, or these factors may cause copper to catalyze reactions between acetone and oxygen leading to nasty products. Acetone dissolves some plastics.

Cal


ACS specs: http://pubs.acs.org/doi/pdf/10.1021/acsreagents.4005

 

Very interesting. I wonder what they mean when they say the use is for cleaning glass

 

Probably has a little acetic acid (vinegar) and maybe some ingredients to prevent people from trying to use to get high. Like they put bitterants into canned air.

 

The topic of bitterants in acetone was covered extensively in a recent thread. See the link below. In short, some acetone sold in pharmacies may have bitterants added. Most acetone sold in hardware stores and all reagent grade acetone does not have bitterants.

Cal

link: https://www.cointalk.com/threads/question-about-my-double-eagles.300284/

 

Chemistry labs use it for rinsing glassware like beakers and pipettes.

 

"Chemistry labs use it for rinsing glassware like beakers..."

 

I went ahead and ordered 10 liters of 99.5%. I have a big project ahead of me. Thanks for the info, assistance and laughs.

 

Clean a pane of glass (with the acetone, of course ), and then pour a little onto it and allow it to evaporate. If the extent of the puddle looks any different than the adjacent unwetted glass, or if there's anything but crystal-clear glass where you poured the puddle, there are particulate additives you may or may not want. Keep in mind - I'm using this post instead of an answer to your last email - even if there is a residue of any sort (I do not expect there to be one) it is almost certainly not relevant to your usage.

You'll be fine with it.

 

Just don't fly within mercury's orbit in an oxygen containing spaceship with copper coins on the dash

 

LOL!

 

I myself use acetone to clean in my lab on occasions distilled water is not enough. Of course it doesnt work for everything but acetone isnt a solvent for everything. However it is in some ways better than methanol as a solvent because of polar and nonpolar properties where methanol is only polar.

-SC