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lifespan by Priscilla Drucklemidge - Sat, 24 Dec 2016 05:44:01 EST ID:RKOZdJ0v No.78416 Ignore Report Reply Quick Reply
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sorry for the stupid question, chemistry is def my weakest area

a search tells me that PG USP/EP has a shelf life of two years when stored below 40°C (104°F) in closed containers away from sources of ultraviolet (UV) light.
should i only make enough solution to last a couple years? how long can refrigeration extend this?
Walter Bullermit - Sun, 25 Dec 2016 11:46:47 EST ID:Hzvahzwj No.78420 Ignore Report Quick Reply
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im assuming that youre using food grade proplyglycol

the shelf life is a legal thing. in my country carbonated water has a declared shelf life.
as long as you store the PG in a somewhat airtight bottle away from heat and intense sunlight, itll be fine.

but depending on what kind of solution youre talking about it might be a good idea to only make it depending on your on usage. nicotine does oxidize a bit, eventhough that in my experience the slight oxidation improves taste of e cig juice.

refrigeration would extend the time period theoretically if the solution is stored in an air tight bottle. besides the legal bullshit this might give a rough estimate of extrapolated shelf life https://en.wikipedia.org/wiki/Q10_(temperature_coefficient)
but that shit quite often fails in practical application as far as ive seen.
Emma Fanbanks - Sun, 25 Dec 2016 12:53:48 EST ID:G2GUCRy9 No.78421 Ignore Report Quick Reply
Why would you need more than a couple of years worth of any kind of solution?
John Semmerforth - Mon, 26 Dec 2016 04:09:20 EST ID:RKOZdJ0v No.78422 Ignore Report Quick Reply

i'm getting a quantity of a research chemical large enough to outlive its legal status (presumably)
i know i can just... keep them not mixed, but i wanted to know if mixing would make the situation worse or not
David Noblingchene - Thu, 29 Dec 2016 00:56:04 EST ID:Fe+cUsBQ No.78426 Ignore Report Quick Reply
You will not regret keeping your entire stash out of solution. Isn't that enough?
Clara Dablingmick - Thu, 29 Dec 2016 18:26:59 EST ID:RKOZdJ0v No.78428 Ignore Report Quick Reply
it is! just curious!

Mescaline Creation by Bombastus !!HToBa9dh - Fri, 21 Aug 2015 17:13:58 EST ID:4ppVjZXo No.76958 Ignore Report Reply Quick Reply
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I just proposed this on /psy/ so let's see what you people think.

I do have an add-on, though. L-Tyrosine can be decarboxylated to Tyramine so you don't have to get a shitload of cheese to extract. From there, you can just brominate it selectively in basic conditions to brominate the carbons meta to the hydroxide. A simple LG > Hydroxide reaction later, you'll have 2,3,4 tri-hydroxyl(aminoethyl)benzene.

One simple reflux with 4eq of Methyliodide should yield mescaline in 95%+ yields. What do you think, /chem/?
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Alice Fuckinggold - Sat, 28 May 2016 09:46:02 EST ID:FN2WDMDT No.77921 Ignore Report Quick Reply
>There has been a misunderstanding of hydrolysis to lysergic acid that I just discovered myself last night. I was looking at a joint paper by Opava and Galena published in 2000 that does an enzymatic hydrolysis using microbes, but as I read the paper they proceeded to perform the hydrolysis by normal KOH means. I noticed that the hydrolysis was very mild and low yielding and did not use microbes so I was wondering what was going on. But then I saw that what they were doing was performing hydrolysis on ergotamine to lysergamide (ergine) and then stop and continue the rest of the hydrolysis by enzymatic means. So I went and revisited all the prior ergot hydrolysis' and it occurred to me that hydrolysis of ergopeptines is actually a 2-step process. When you perform a hydrolysis you are actually performing a hydrolysis of the ergopeptine to a lysergic amide (LSA) and then after you have LSA you perform a hydrolysis to lysergic acid. This has never really been pointed out because it is all the same procedure, but it is actually important to note when researching different hydrolysis'. For example, an hydrolysis on LSA's extracted straight from HBWR seeds does not have to be as harsh as one performed on ergotamine which has to first undergo hydrolysis to LSA and THEN to lysergic acid. That is why some hydrolysis' you come across can be weaker or stronger. For example, the Galena/Opava hydrolysis was performed at %4 KOH in ethanol for 2 hours (only acid hydrolysis actually requires water as a solvent). This is in contradiction to Smith and Tinnis in the 1930's who declared that lysergic acid cannot be achieved below a %7 KOH content as it is too mild. But Galena/Opava was just performing hydrolysis on ergotamine to LSA, not fully to lysergic acid, so they could do it under milder conditions. And also what wasn't known in the 1930's with regards to hydrolysis of ergopeptines is that heat and time can make up for milder basic conditions. Hence Shulgin's very mild hydrolysis performed just in water at 75c with a mere %6.7 KOH content but done over 4 hours. So basically hydrolysis of ergopeptines is a 2-step process and depending on how many of those 2-steps you need to ac…
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Sophie Honeyfoot - Sat, 09 Jul 2016 03:59:45 EST ID:UX5Tgvrg No.78075 Ignore Report Quick Reply
I take 1mg doses like yearly lol
Nell Gecklecocke - Fri, 23 Dec 2016 23:17:17 EST ID:DPjhXpIm No.78415 Ignore Report Quick Reply
A good old methylamination with benzaldehyde then a reduction for some trimethoxyamphetamine, a 1000 percent increse in potentcy.
Schepperschop - Sat, 24 Dec 2016 13:33:31 EST ID:xTIigKo1 No.78417 Ignore Report Quick Reply
Find the cactus>>Eat the cactus
press - Sun, 25 Dec 2016 11:24:27 EST ID:Hzvahzwj No.78419 Ignore Report Quick Reply
i think you mean a henry condensation with a following reduction?

tfw calmus oil is expenis as fuck and you cant just go via reductive amination for tma2

Solubility question by Ebenezer Hattingnack - Sat, 24 Dec 2016 18:26:32 EST ID:750GEpVs No.78418 Ignore Report Reply Quick Reply
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Is α-Methylfentanyl alcohol soluble, or is there something else you'd recommend?

TiCl4 by Nicholas Buzzson - Fri, 15 Jul 2016 00:06:30 EST ID:2+q0LcOC No.78094 Ignore Report Reply Quick Reply
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If Ti has the follow electron config as a base config: (where ^ represents an e-)

^^ ^ ^
4s 3d 3d 3d 3d 3d

would it hybridise to the following (to accommodate (Cl-)4)?
^ ^ ^ ^
sp3d sp3d sp3d sp3d sp3d

leaving it with a final config of (with bonded (Cl-)4):
^ ^ ^ ^ ^ ^ ^ ^
sp3d sp3d sp3d sp3d sp3d

thereby classifying it as a lewis acid because it can accept a lone pair?
i hope this makes sense
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Nicholas Buzzson - Fri, 15 Jul 2016 00:09:30 EST ID:2+q0LcOC No.78095 Ignore Report Quick Reply
fuck that formatting did not work
to clarify
first example: essentially the 4 of the 5 sp3ds would have 1 electron in each
second example: 4 of 5 sp3ds filled due (Cl-)4 electrons and last orbital unfilled, allowing lone pair acceptance

is this right?
Bombastus !RZEwn1AX62!!xXxJO70U - Thu, 21 Jul 2016 19:19:13 EST ID:vbS8CtHn No.78104 Ignore Report Quick Reply
okay this is some weird abstract visual gymnastics here
please redo this on MS paint and repost a picture.
Isabella Sullyshaw - Sun, 24 Jul 2016 13:14:18 EST ID:R8K15vkj No.78110 Ignore Report Quick Reply
use pre tags for
m o n o s p a c e
levi - Mon, 19 Dec 2016 08:54:13 EST ID:2kHGLnfS No.78406 Ignore Report Quick Reply
hey man not sure im following you exactly, but it would be much easier to think of this in terms of CFT/ligand field model, as in 4 M-L bonding interactions lying lower in energy than the metal based d-orbitals (e and t2 sets) which have an occupancy of 4. Electronically speaking TiCl4 has low-lying MO's, of primarly Ti character, so yeah it is fairly electrophilic and a decent lewis acid. evidenced in that it happily forms adducts with donor solvents such as THF
Schepperschop - Wed, 21 Dec 2016 17:49:23 EST ID:xTIigKo1 No.78407 Ignore Report Quick Reply
It does not make sense.

Chem Career by Betsy Pickhall - Mon, 21 Nov 2016 20:49:40 EST ID:BYwX2ie4 No.78355 Ignore Report Reply Quick Reply
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Chem BS here. I formulate construction products. Pretty damn good at it. But I believe I've reached my salary cap and I'm only 3 years in.

I want to switch fields to make some real money and not just the bread crumbs I currently get in exchange for my research and ideas, but don't know what to branch into. The only things that make sense to me is:

Chemical Engineering
Biomedical Engineering

or just saying fuck all and doing

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Charles Cloffingdud - Tue, 06 Dec 2016 20:07:31 EST ID:SGvEm69U No.78383 Ignore Report Quick Reply

Sure seems that way.

The path gets pretty confusing.

I just need to figure some shit out.
Bombastus !uYErosQbLM!!Mybq1UbK - Sat, 10 Dec 2016 17:06:27 EST ID:01P1ms0Q No.78391 Ignore Report Quick Reply
How have you been mulling about this, SGvEm69U?
Have you figured some stuff out or where do you stand with this? It's the current time to tell the high schoolies and first years where to direct their vocations and if even one's life is changed or helped by your experience and thoughts, I will have considered this thread an epic success.
Charlotte Doblingshit - Tue, 13 Dec 2016 21:12:19 EST ID:SGvEm69U No.78401 Ignore Report Quick Reply

Well I was ready to reject chemistry outright, especially after Captain ChemE-Cunt showed up. But I dunno. You forced me to confront a truth about my path in life. I don't believe I'm any sort of gift to chemistry; there's no nobel prize in my future and I'm no genius. But I know I'm more than this.

It's a bit painful to see my creativity used for something as frivolous as the structural integrity of concrete surfaces. It's even more painful to see that frivolous innovation generate millions of dollars for someone else while I see the equivalent of bread crumbs for my efforts. I understand that there's sales, marketing, processing, and manufacture to consider as well, but it's my formula and my customized process that allowed the rewards to be reaped in the first place. Hell, I basically optimized their entire manufacturing process for these products; wrote all the batch tickets for them, all the pds sheets, all the sds sheets, I mean that product line is my fucking brain child. And oh yes, I feel the appreciation. I get so many pats on the back I have bruises. But monetary compensation? Ohh no, I'm at market value. Someone with A MASTERS (OMG) will accept my wages, and so I am pretty much at my peak value.

What a fucking joke.

They don't take into consideration that someone with a masters in chemistry may not have the talent to formulate their products. And even if they do, it would take years to even get to the understanding I have now. I'm confident that anyone with a higher level of insight into my field would request more than what they can offer me.

I guess all my woes may just stem from a shitty company; I got the job before I even graduated with my Bachelor's at a construction chemicals manufacturer and revamped a failing product line within 2 years. The knowledge I learned was from my own diligence and study. No one taught me anything about the science behind the products because there was no one there who understood the chemistry.

We took market leadership with first baby; it's quadrupled in sales volume since my revisions. After a few research successes, they divided my other duties among 2 other people and gave me a full time research position. And you know, creating shit is great, especially shit that people need and will use. I love that people need what I design and will choose it over other products in the market. I guess I just feel like I'm just trading my ideas away.. a part of me away, in exchange for a meager allowance. I know the financial impact of my designs because I design my products around their financial impact.

Basically I'm just disappointed in my experience with the chemical industry. And I understand that this small company may not be representative of the industry. I hope it's not.
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Charlotte Doblingshit - Tue, 13 Dec 2016 21:19:35 EST ID:SGvEm69U No.78402 Ignore Report Quick Reply

I apologize, that was Vehk who dropped the troof bomb.

Credit to you sir.
Thomas Babberstetch - Sat, 17 Dec 2016 05:09:31 EST ID:ynqcZ6AY No.78405 Ignore Report Quick Reply
Ayy fam you gotta chill out. You're not making enough money? That's not a problem with chemistry, that's a problem with the company you're working for. You gotta shop around. You're talking all about how you improved their product line, that's some resume shit. Maybe your next step is staying with chemistry, maybe it isn't. But don't take one bad job as indicative of the field.

I'm a chemical engineer working in drug design. I make artificial peptides to target protein interactions. I really enjoy it, and it pays well. Just gotta find something that works for you.

Salt by Nathaniel Buffinghore - Wed, 07 Dec 2016 16:09:37 EST ID:mswwHH6I No.78386 Ignore Report Reply Quick Reply
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in a context of conducting a synthesis, does it matter whether a reagent is in a form of a salt or not? can you even make such a general statement?

i'm asking because im interested in the chemistry behind converting codeine phosphate to morphine. does it matter whether someone uses codeine phosphate or codeine freebase?

pic unrelated
3 posts omitted. Click Reply to view.
Lillian Debblehuck - Sun, 11 Dec 2016 18:22:47 EST ID:mswwHH6I No.78395 Ignore Report Quick Reply
Codeine. I got it in Phosphate form.

But since you are asking: I guess it does matter?
Bombastus !uYErosQbLM!!Mybq1UbK - Sun, 11 Dec 2016 18:43:11 EST ID:iZfP1j72 No.78396 Ignore Report Quick Reply
Ah, I see. I thought you were doing a reaction with the codeine phosphate and wanted to know what you were doing with it.

In most reactions, you'll have to only calculate the moles in the weight as 30mg of codeine does not mean 30mg of pure codeine. Rather, they include the phosphate weight as well. 30mg of codeine anhydrate has 30mg of codeine in it. 30mg of codeine phosphate has 20 something mg of codeine and like 7 or so mg of phosphate (too lazy to do that math - you figure it out).

It will matter in some water sensitive reactions and depending on the ion exchange, it could matter. But in most cases involving a base, the phosphate would be generated anyway.
James Lightspear - Sun, 11 Dec 2016 23:56:05 EST ID:9Opqdgsf No.78397 Ignore Report Quick Reply
Depends on the solvent your going to carry out your reaction in. In most cases i can think of the freebase is required. Careful, codeine is easily destroyed by strong acids and bases. Hell, even heat and a little too much ammonia will do it. Also too much water and it will stay in the aqueous layer. Work as small as you can because 9 times of of 10 you will have failures.

codeine 300g/mol
codeine phos 397g/mol
ammonia 17g/mol
sodium carbonate 106g/mol

0.001mol 1mmol codeine phosphate = 397mg
add 1mmol ammonia = 17mg or 170mg 10% ammonia
or add 0.5mmol carbonate because there are 2 sodiums = 53mg
and you should be left with 300mg codeine

In reality you will likely need a little more base in many cases, but it gives you a general idea how much to start with.
Charlotte Bardwell - Mon, 12 Dec 2016 15:34:02 EST ID:mswwHH6I No.78400 Ignore Report Quick Reply
Alright, that's cool.

Thanks yall
Schepperschop - Wed, 14 Dec 2016 18:16:13 EST ID:xTIigKo1 No.78404 Ignore Report Quick Reply
Want morphine?
Ask Papaver!
That difficult?
Not really.

Query for good entry point into chemistry by Simon Hommermere - Fri, 28 Oct 2016 13:21:20 EST ID:g4yJTuN/ No.78329 Ignore Report Reply Quick Reply
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I've always wanted to stick my nose into chemistry and now I have some spare time to do it, so I wanted to ask,
does anyone have a recommendation on good material/literature to start out with?
4 posts omitted. Click Reply to view.
Nicholas Callystit - Wed, 23 Nov 2016 17:35:44 EST ID:yW0mpyp1 No.78365 Ignore Report Quick Reply
becoming a chemist is different than just learning how it works. I'm not op but i'd love to learn chemistry and how it works, but I don't really care to perform it beyond basic kitchen chemistry level extractions and such
Edward Brommerhud - Tue, 06 Dec 2016 23:12:53 EST ID:dBr1KR5d No.78384 Ignore Report Quick Reply
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Read this book its on sciencemadness library somewhere.
Doris Hellyfuck - Wed, 07 Dec 2016 23:54:51 EST ID:g4yJTuN/ No.78387 Ignore Report Quick Reply
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Thanks for the pointers!

This is not really serious enough to warrant that. This is more something productive to do for fun instead of blunting my brain with those animoos and games. Checked out Zumdahl though, seems just right for my way of learning.

Actually found that one while browsing chemistry torrents, I love how far away it is from modern learning literature.
Jack Pankinstod - Mon, 12 Dec 2016 12:22:14 EST ID:klMiQ9iI No.78399 Ignore Report Quick Reply
I suppose you could go online and find an old chemistry text book and purchase that? That would be a good entry point anyway, instead of jumping right in and mixing a bunch of shit together in your kitchen
Schepperschop - Wed, 14 Dec 2016 17:50:14 EST ID:xTIigKo1 No.78403 Ignore Report Quick Reply
Heat food>>>does this taste better>>>why>>>chemistry

DXM Purification by Violeta00 - Thu, 03 Nov 2016 21:26:09 EST ID:HfyaiY9o No.78336 Ignore Report Reply Quick Reply
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Hello all,

I am interested if knowing the method for purifying DXM from over the counter medication. I have read that such a method exists and would like to learn more about it. I have some basic experience with chemistry and access to laboratory equipment. Could anyone please share the methodology and the background information? Thanks.
press - Fri, 04 Nov 2016 17:11:58 EST ID:aoZYWjFW No.78337 Ignore Report Quick Reply
what kind of preparation of DXM will you be using?
Bombastus !uYErosQbLM!!Mybq1UbK - Wed, 07 Dec 2016 00:26:09 EST ID:MzxQ4oNO No.78385 Ignore Report Quick Reply
Buy DXM from research chemical sites?

Anti-Radiation WIFI Antennas by Hugh Noblingson - Tue, 23 Aug 2016 16:39:24 EST ID:zsw9I8fO No.78166 Ignore Report Reply Quick Reply
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Is this legit? What evidence do we have to backup that there's dangerous radiation coming from wifi antennas?

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Molly Nollerlock - Sun, 13 Nov 2016 02:46:56 EST ID:zsw9I8fO No.78343 Ignore Report Quick Reply
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Fuck Shittingdock - Sun, 20 Nov 2016 13:51:25 EST ID:CdJTHjlQ No.78352 Ignore Report Quick Reply

This image is a few years old, back when meming that EM causes allergies and headaches was a meme.
Cyril Chaffingman - Thu, 24 Nov 2016 17:21:28 EST ID:g4yJTuN/ No.78368 Ignore Report Quick Reply
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Just in passing...
Would covering a room in tin foil block out the cosmic rays?
Or would one need sturdier means?
Eugene Hezzlenure - Tue, 29 Nov 2016 13:57:03 EST ID:K4ted3sw No.78375 Ignore Report Quick Reply
Transmitting antennas are designed to be radiators. An anti-radiation "antenna" is a dummy load which is useful when you want to test a transmitter without radiating a signal.
Bombastus !uYErosQbLM!!Mybq1UbK - Fri, 02 Dec 2016 23:42:33 EST ID:ZEo1qUmp No.78378 Ignore Report Quick Reply
I actually don't know if this is a troll post or not. I mean, we literally have /tinfoil/ as a board.

Actually. I love this post

Transform dry vaped herb into bricks by Walrus - Mon, 28 Nov 2016 10:34:32 EST ID:nZCjXMk3 No.78373 Ignore Report Reply Quick Reply
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Transform Dry vaped herb into (...)
11/28/16(Mon)19:25:41 No.8502283
992 KB
992 KB JPG
Hello !
I am playing the sorcerer's

> have ABV ( already been vaped weed ) . It can be grinded as a powder if necessary.
> want to put it together and make it a brick, or something else like solid

Problem, the herb is no longer sticky.

I tried to make it solid by adding a bit of water, let the sun evaporate it , and put this shit in tue fridge for like 10 minutes .... FAILURE, it gave me a muddy mixture ...( pic related )
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Bombastus !uYErosQbLM!!Mybq1UbK - Fri, 02 Dec 2016 23:44:12 EST ID:jtHY49uD No.78379 Ignore Report Quick Reply
Why don' you just eat it?


Filter Papers by Molly Nollerlock - Sun, 13 Nov 2016 15:32:34 EST ID:zsw9I8fO No.78345 Ignore Report Reply Quick Reply
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As you can, there are a lot of types:

Which type should I get for basic gravity filtration of drugs?
Bombastus !uYErosQbLM!!Mybq1UbK - Tue, 15 Nov 2016 01:10:58 EST ID:HCt0W/hp No.78348 Ignore Report Quick Reply
do you have a vacuum filtration set?

if yes, 1-2 works best. if no, coffee filters work best. when dealing with pills, it's still best to use coffee filters
Vehk !7HYGxe5v5c - Sun, 27 Nov 2016 22:18:13 EST ID:l5Akm3J6 No.78372 Ignore Report Quick Reply

Coffee Filters are best, fine scientific filters tend to filter rather slowly. If you are working with Ibuprofen, you're better off decanting - it is heavy and highly insoluble even at room temperature, so it will form an adhesive block at the bottom of the container that won't fall out even when tilted at a strong angle. Paracetamol is a bit more awkward.

Purifying and Freebasing by William Sinningworth - Sun, 16 Oct 2016 02:30:25 EST ID:zsw9I8fO No.78302 Ignore Report Reply Quick Reply
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I've gone through this process to convert salts -> freebase by:
adding some salt drug to a lye solution then using hexane to pull the freebase and evaporate.
My question is: while this process seems to have to have worked with a 2C and with U-44770, can you think of any case where the NaOH will mess up the drug somehow? Or a case where the freebase won't dissolve in the Hexane?

2) Is acetone good enough for purifying most drugs? How are you even supposed to know the solubility of a lot of these new drugs like 4-methyl-pentedrone or 3-Fluorophenmetrazine? Acetone is used for MDMA and Ketamine purificaiton, so what stuff does it NOT work on?
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Press !QUHukXEvkY - Fri, 11 Nov 2016 13:45:49 EST ID:JeMHyPDO No.78339 Ignore Report Quick Reply
Im not sure if sodium hydroxide would be okay.
You could make some Na2CO3 by heating NaHCO3
Bombastus !uYErosQbLM!!Mybq1UbK - Tue, 15 Nov 2016 01:08:30 EST ID:6N1t5rKu No.78346 Ignore Report Quick Reply
David Suckleson - Tue, 22 Nov 2016 19:07:24 EST ID:zsw9I8fO No.78358 Ignore Report Quick Reply
So Na2CO3 is a better base than NaHCO3?
Cyril Chittingbare - Tue, 22 Nov 2016 22:17:00 EST ID:Q2W2CR89 No.78359 Ignore Report Quick Reply
Yes. CO3^2- is a better base than HCO3^- since it is able to accept 2 protons as opposed to 1. Not sure if OP should use a strong base like NaOH tho..
Bombastus !uYErosQbLM!!Mybq1UbK - Fri, 25 Nov 2016 23:22:49 EST ID:sglEgUGb No.78370 Ignore Report Quick Reply
That doesn't determine strength.

Hydrochloric Acid is around 3000x times stronger than the first proton of phosphoric acid despite it only having one proton.

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