No IPA... what now ? BS

the Hive BB

Chemistry Discourse

profile | register | preferences | faq | search

next newest topic | next oldest topic

Author	Topic: No IPA... what now ? BS
andrew.z Member	posted 10-20-1999 09:11 AM OK so here it is ufficial no isopropylic alcohol.. i have to register etc. so what i can get is ethilic alcohol 95% ( red in color ) or pure alcohol 100 % ( white )i think the pharmacist told me that it is ethilic as well ( he said ... well the one used for liquors...). So can i use this and in the same quantity in the bright star 's recipie instead of the IPA ? Andrew
sunlight Member	posted 10-20-1999 11:21 AM You can use current methanol (wood alcohol) from the drugstore, it works really fine if it's 95 % or more , or ethanol 96 %. You don't need IPA at all.
andrew.z Member	posted 10-20-1999 01:02 PM thanks for the reply.. no no we don't have ethanol or methanol around here 'cos some very smart guyz put it in the wines and so now all those alcohols are offlimits and watched and you need license from authorities even for small amounts. We are left only with 95% ethilic alcohol and pure ethilic alcohol ( the one for liquors )... can i use then the last one ? Andrew
iudexk Member	posted 10-20-1999 02:42 PM Tape head cleaner = 99.9+% IPA
Osmium Member	posted 10-21-1999 03:02 AM Pure ethanol is very expensive, because of taxation. More than 90% of the price is going directly to the state. This is a very good reason not to use it, unless you really need it. Denatured EtOH, usually it is about 95%, will do in most reactions. If it contains some dye, distill it. If you need it for crystallisation, dry it. Or buy the pure stuff.
andrew.z Member	posted 10-21-1999 09:37 AM Then you are suggesting me to go to the pharmacy and buy the pure ETHILIC alcohol 100% drinkable and use it for every step that BrighT Star uses it ?
Osmium Member	posted 10-21-1999 11:05 AM NO! For most steps the cheap denatured alcohol is good enough. The Al/Hg works well with this cheap alcohol. For the final product crystallisation I would use the expensive, 100% alcohol from the pharmacy or wherever you buy it. But it is not necessary to use it in the other steps.
andrew.z Member	posted 10-21-1999 11:25 AM ok but for my tranquillity i could use the 100% alcohol for all the steps even for the al/hg process, right ? I could use the cheaper one but perhaps the more expensive one is better... who knows after all Bs asked for IPA not pure alcohol ! Andrew
Bright Star Member	posted 10-21-1999 01:47 PM Andrew, Osmium is right. Use the cheap stuff. A little secret: Most of the time the cheap stuff is a bit purer. IE it doesn't have any of the perfumes, sugars, or other 'contaminants' that would otherwise plague our little fun. The 'Alcohol' can be either MeOH, EtOH, or IPA. Your choice.
andrew.z Member	posted 10-22-1999 04:25 AM HOLY SHIT ! i went to the pharmacy and i have bought alcohol pure F.U. 95° purest, it looks like water.... and the price for 1 liter.... $16. But at least i can use it to replace the ipa ( oh by the way here the ipa is mixed with something else and it only comes in 10 ml bottles sold with headtapecleaners kits... once you have use it ( the kit ) you have to buy another one...
dr.strangelove Member	posted 10-22-1999 09:30 AM Dont Fuck Around and try to crystallize w/ Denatured alcohol, ESPECIALLY if you're aiming for a sulfate salt. I lost about 70 grams doing this one time. 70 grams! I'm trying to save you some weird feelings.
andrew.z Member	posted 10-22-1999 02:21 PM hey what do you mean ? the common red ethilic alcohol at 90 ° is better than the purest 95 ° whiTe ethilic alcohol ?... this is really never ending the red one has many impurities, why should it be better ?
ChemHack Member	posted 10-22-1999 10:45 PM I thinnk what Osmuium was saying is that you can use the denatured alcohol that is sold in hardware stores as a solvent. This stuff costs about $10/gallon or less and is usually denatured with methanol and sometimes with some nasty smelling ketones. Shoot for the stuff that just smells like alcohol, it should look like water. The major contaminants, methanol and water, will not interfer with the Al/Hg procedure. 190 Proof Vodka is also good. You dont worry about the water here because you might be using 40%methlyamine in water so theres a bunch of water anyway. Don't they sell 91% IPA at a grocery near you?
andrew.z Member	posted 10-25-1999 09:08 AM no they don't sell ipa anywhere around here, so what would i use 4 the chrystalization process ? i use the red ethilic 90 % for the Al/Hg process, but then finally what do i use to get the powder out of the oil ?
dr.strangelove Member	posted 10-25-1999 11:36 AM (tongue in cheek) You can always do a Grignard and synth your own 1-propanol from ethanol.... (serious) Go buy Everclear and use it. It rocks.
Kate Moss Member	posted 10-25-1999 12:24 PM Can't you just go to your local Department of justice and say you need to obtain a licence for ethanol. Or doesn't SciALi sell it? It is rumored here that our EtOH in lab is contaminated w/ benzene. Is this just bullshit to keep the students from drinking it or what? Seems to me that adding a carcinogen to a solvent is a rather bad idea for all parties involved? What's the deal? I can send you some 99.9% IPA is you need it that bad. Shit I've been telling people I'll send them stuff all day, but I will just give me time. Wait couldn't you freeze the IPA and pour off the water? to get an almost pure IPA? Probably wrong and just babbeling.. Sorry. Kate
andrew.z Member	posted 10-25-1999 01:08 PM I LIVE IN ITALY - EUROPE -- so i don't have access to everclear ... i don't know even what it is. Kate i could get a license for a max of 2.5 liters of IPA, but i would have to apply for it to the authorities and i think that it would not be safe. Your offer is great but then what would happen once your IPA gets to the italian customs ?? bug question ha ? love, Andrew
ChemHack Member	posted 10-26-1999 12:03 AM Please dont take this the wrong way, its not meant to be an insult. I offer this as a way for the less than perfect lab to produce less than perfect crystals. Suppose you have 20ml of magic oil in a small glass jar. Add 20ml of distilled water. Use and eyedropper to add a few drops of hydrochloric acid. Shake it up really well. Some of the oil will dissolve into the water. If not all of it goes in then shake it again and test the pH. If its not acidic add a few more drops of acid and repeat until it is acidic. If you still have an oil layer after the water is good and acid that means you got a good deal of crap or unreacted ketone in your oil. Add 20ml of DCM and shake the hell out of it. Separate the DCM layer off and keep the water layer. Pour it into a big flat bottomed glass casserole dish and leave it out in the warm sun for a few days to evaporate. Don't let the squirrels drink it. Now go in the kitchen and pour a quater-inch layer of epsom salts onto a big rectangular cookie sheet. Put this in the oven and cook it for 4 hours or more. Transfer hot out of the oven into a sealable container, preferably one that is completely filled by the epsom salts so that there is as little air in the container as possible. Let it cool inside the container. Get the best acetone you can find. Pray it doesnt have any alcohol in it. Get a glass container. Pour some of your now cool epsom salts into the bottom of this container. Fill it with your acetone...dont leave a lot of air in there. Shake it a bit. Shake occasionally for the next hour. Decant the acetone into a slightly smaller bottle so that it totally fills that bottle with no air. After a few days the stuff in the caserole dish has evaporated (don't get in a rush, make sure it is dry. You could put it in the oven at the absolute lowest setting around 150F but well... just wait for it to dry on its own) scrape the residue up and put it in a glass bottle. Pour half of your dry acetone over the residue and shake it up good. Let it all settle to the bottom then decant off 3/4 of the acetone and add the other half of the acetone. Shake some more. Pour through filter paper to collect your crystals. Spread em out on a glass plate to dry.
dr.fart Member	posted 10-26-1999 12:17 AM You wanna easy OTC IPA. Try those marijuana/tomato plant stores. They sell the shit in sizes up to 25 gallons. 4 L. = $ 15.00. It is 99.5% IPA. Dr. Fart
sunlight Member	posted 10-26-1999 03:54 AM You have your answers: use the cheap alcohol for Al/Hg and crystallize with aqueous hydrochloric acid, evaporate water ( whith heat till 130 C or with sun ) and then add 4 volumes of acetone, and wash.
ChemHack Member	posted 10-26-1999 09:38 PM nice to hear from you sunlight!

All times are CT (US)	next newest topic \| next oldest topic
Administrative Options: Close Topic \| Archive/Move \| Delete Topic
	Hop to:

Contact Us | the Hive