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Sandwich


Harm Reduction Notes for the COVID-19 Pandemic

Mathematics

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- Thu, 05 Oct 2017 11:42:33 EST +YUSEic8 No.78876
File: 1507218153397.jpg -(71488B / 69.81KB, 815x1080) Thumbnail displayed, click image for full size. Mathematics
I'm struggling with the maths of chemistry.

Anyone else hate the maths side of things? I see it as a necessary evil but I still hate it.
2 posts and 1 images omitted. Click View Thread to read.
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press !XIxc6BpKnU - Tue, 07 Nov 2017 15:45:46 EST 4coI32Fl No.78897 Reply
im a bit ashamed to admit it but im still really happy i never had to do quantum physics .

one sort of "trick" that helped me to keep my motivation high enough to actually practice enough to pass was to come up with thought experiments or bullshit problems that required me to use the maths. using the idea work as play to your advantage gets really hard with stuff like a fucking particle on a sphere


a part from that i often find myself thinking "wow thats really interesting, im sure this is a fascinating concept, but id rather leave this to somebody else that actually enjoys this. id rather do retrosynthesis or let a computer do the calculating or eat ass right now

is there a particular area that you are struggling with


>>78890
i remember those by using base ten stuff. you can quickly derive those by messing around with potencies of ten
>>
Ian Pucklemare - Wed, 15 Nov 2017 11:47:19 EST +YUSEic8 No.78907 Reply
>>78897
>is there a particular area that you are struggling with
Everything really, it's just i'm pretty fresh to all of this and have spent a long time out of education before going back into it. Things can kind of make sense when i tackle them head on but if a couple of days after that I come across a problem, i'll struggle to actually think of the best way to calculate an answer.

I can't think of any problems off hand but if one comes up i'll post it here.

>gets really hard with stuff like a fucking particle on a sphere
I did have some problems on this and it was bullshit. Can't the computers do all of this and i'll stick to learning my way around the organic labs.
>>
Basil Bucklesuck - Mon, 20 Nov 2017 22:44:13 EST pmYWBMz8 No.78919 Reply
I used to sip whiskey and do chemistry hw when I was going to community college

I somewhat grew to like the elegance of trying to solve a problem with a line of fractions and words that cancel out.

gib stank token plis

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- Wed, 15 Nov 2017 12:52:49 EST UwpwKm1P No.78908
File: 1510768369587.png -(46191B / 45.11KB, 2080x656) Thumbnail displayed, click image for full size. gib stank token plis
lelbniz
>>
Bombastus !uYErosQbLM!!Mybq1UbK - Thu, 16 Nov 2017 04:07:15 EST Fd7VfiYK No.78909 Reply
>>78908
This can be a good thread. The society itself isn't based around alchemy but to achieve the golden standard through a thought process. Something against the scientific method but still very valid.
It used to be some sort of annoying half-cult but actually provided introspective determination for the members so long as you sign away a bit of your freedom and resources. Kinda like a church or a society of chemists (ACS) that later developed from this structure.

Leibniz's concept of a metaphysical Monad can fit nicely into the school of yestercentury. Something that I have yet to be able to understand fully but can see how it would tie to the alchemical societies back then. He predicted nuclear physics through the destruction of monads (mind to matter "transfer) instead of the more widely accepted concept of indivisible "particles". Though obsolete, it can still be applied today.

We need more metaphysical quantum alchemists today.

Organic synthesis

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- Sat, 28 Oct 2017 09:13:55 EST EfFKvnWj No.78885
File: 1509196435374.png -(1526865B / 1.46MB, 750x1334) Thumbnail displayed, click image for full size. Organic synthesis
Anyone have any books on organic synthesis. The basics how Synthesis works?

Chemistry is Fucking Crazy

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- Thu, 12 Oct 2017 18:54:47 EST UeKrF7rB No.78879
File: 1507848887987.jpg -(52812B / 51.57KB, 500x553) Thumbnail displayed, click image for full size. Chemistry is Fucking Crazy
I'm barely learning about hybridization theory and already it's requiring my fullest attention and focus to keep up with the concepts. Normally I can half-pay attention in anything from anatomy to calculus to history and grasp the underlying concepts with ease. Is it because I can't see the orbitals and electrons so my mind has difficulty making a "mental map" of it? I thought chem would be as easy for me as all the other sciences but it's shockingly complicated. I'm not even in O-chem yet. Will my brain adapt to this new mode of thinking and I will be okay?
>>
Molly Chindlematch - Mon, 16 Oct 2017 20:03:15 EST JlSfW3Ow No.78880 Reply
tis normal, it's a good sign to study, good luck!

Anhydrous Ethanol/Methanol

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- Fri, 18 Nov 2016 13:57:09 EST zsw9I8fO No.78350
File: 1479495429306.jpg -(49430B / 48.27KB, 398x389) Thumbnail displayed, click image for full size. Anhydrous Ethanol/Methanol
How do I go about using something like this (pic) to make anhydrous ethanol or methanol?
9 posts and 1 images omitted. Click View Thread to read.
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Henry Cramblehall - Tue, 12 Sep 2017 18:55:54 EST M7FrGPbw No.78846 Reply
>>78845
its a pretty useful post dont ya think. plus this board is slow enuff
>>
Betsy Nugglesud - Fri, 06 Oct 2017 15:54:21 EST UoTssc8h No.78878 Reply
>>78381
magnesium sulfate won't take it all the way to 200 proof but it will get you slightly past azeotropic ethanol.

Sieves are easy to use; you don't even need to distill anything, and they can be regenerated by simply putting them in a pyrex flask (or improvised equivalent) and heating with a torch while shaking them up until no more condensation appears at the mouth of the container. They will absorb a little water while cooling but it's not much of a problem unless the humidity is super high or you need ABSOLUTELY dry ethanol. If in doubt stick a coffee filter filled with another drying agent (like mag sulf.) in the opening while it cools, so any air entering is relatively dry. Either way, the sieves will still make ethanol way drier than using MgSO4. They do take a while to work, but all you have to do is dry them out, dump them in, let it sit a few days, then filter off the sieves.

Opium Column Chromatography

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- Tue, 11 Jul 2017 21:56:30 EST QGxEeR56 No.78746
File: 1499824590034.png -(267959B / 261.68KB, 504x380) Thumbnail displayed, click image for full size. Opium Column Chromatography
Without calcium chelation, this is the best way to achieve pure morphine from a layer of puddy or otherwise concentrated poppy residue.

A mixture of 9:1:1 DCM Methanol Diethylamine will produce an elution of reticuline impurities at 0.7-0.9, codeine at 0.45, and morphine at 0.2. Other opium oils either elute at 1 and heavier, coloured oils will not elute at all (or under 0.02).

Running this column simulation once gave me morphine as light brown needles which drew in moisture and became wet after 3 hours. The second time, morphine did not completely come through as shown on TLC short wave UV light as what I expected to be high amounts of meconate salts along with insufficient methanol miscibility. This was solved by adding an additional 1 equivalent of methanol thereby moving the morphine. This gave darker brown crystals which again absorbed water after 3 hours. Full morphine elution towards 100% in a gradient column gave 2% of brown oils. This potentially allows a column to remove codeine and oils and a methanol flush to remove the morphine with a 5-10% heavy oil contamination.

Will update this thread with more conclusions and projections.
15 posts and 3 images omitted. Click View Thread to read.
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Aureolus Werrywag - Thu, 07 Sep 2017 00:47:08 EST HizIkIMY No.78839 Reply
>>78837
droopbox it up fam

>>78838
there's some paper here that requires something i can't remember
or you can go with hydrobromic acid in acetic acid solution but that's harder to find.
>>
Aureolus Werrywag - Thu, 07 Sep 2017 00:53:36 EST HizIkIMY No.78840 Reply
>>78838
https://www.researchgate.net/publication/239738471_O-Demethylation_of_Opioid_Derivatives_with_Methane_Sulfonic_Acid_Methionine_Application_to_the_Synthesis_of_Naloxone_and_Analogues

Also US patent US5071985
A mixture of 3.15 g (10-2 mole) of oxycodone, 28.3 g (3.10-1 mole) of methanesulfonic acid and 2.2 g (1.5.10-2 mole) of DL-methionine are heated to 40° and stirred at 12 hours.
Precipitate with ammonia to 9, extract with DCM. Chloroform column with a methanol gradient. 72% yield.
>>
Theophrastus Werrywag - Sun, 01 Oct 2017 01:08:19 EST m5AB1YJF No.78874 Reply
Ima just save this here

https://www.google.com/patents/US3137701

https://www.google.com/patents/US3632580

https://www.google.com/patents/US5112975

http://pubs.acs.org/doi/abs/10.1021/jo01215a002?journalCode=joceah

https://www.ncbi.nlm.nih.gov/pubmed/21630508

https://www.ncbi.nlm.nih.gov/pubmed/7511163

https://www.ncbi.nlm.nih.gov/pubmed/21630516

https://www.google.com/patents/EP2001891B1?cl=en

http://pubs.acs.org/doi/abs/10.1021/jm8011245

https://www.ncbi.nlm.nih.gov/pubmed/16563682

http://pubs.acs.org/doi/abs/10.1021/jm000119i

https://www.ncbi.nlm.nih.gov/pubmed/25059282

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4053365/

http://pubs.acs.org/doi/pdfplus/10.1021/jm030311v
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Psilocetin

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- Fri, 15 Sep 2017 18:22:23 EST yzU9mG3u No.78851
File: 1505514143946.jpg -(9313B / 9.09KB, 320x320) Thumbnail displayed, click image for full size. Psilocetin
How do you properly synthesize 4-aco-dmt
Steps, glassware needed
Proper chemistry explained please
2 posts omitted. Click View Thread to read.
>>
Thomas Grandbanks - Wed, 20 Sep 2017 17:08:25 EST hBAZGxou No.78859 Reply
this is basically impossible because psilocin is very unstable and so doing ordinary unqualified idiot garage chemistry on psilocin will turn it into useless polymers. if you freeze-dry the mushrooms, grind them up, extract into water under nitrogen, hydrolyse with alkali for a few hours also under nitrogen, extract into chloroform under nitrogen, and treat this with acetic anhydride and pyridine under nitrogen, maybe you have a chance. but you've probably not even considered that the whole rxn has to occur "under nitrogen" or that e.g. reflux in acid as one dumbass said will tear apart that indole like a dog playing with a soccer ball. furthermore it's not even any more potent than what you started with so you're wasting mushrooms. and if you meant to do the synthesis from scratch, you have absolutely no chance so just read the tihkal entry and sob quietly about your inability to acquire 4-hydroxyindole, oxalyl chloride, dimethylamine, or LAH.
>>
Lydia Honeystock - Sat, 30 Sep 2017 06:28:55 EST H2dReURr No.78872 Reply
>>78867
This may sound retarded... but I've been dreaming of a psilocybe gut flora or equivalent. Just imagine it.. whenever you ate too much grain, you'd be tripping balls!

Ketamine

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- Wed, 20 Sep 2017 11:01:09 EST VYddMeH/ No.78854
File: 1505919669220.jpg -(136252B / 133.06KB, 640x639) Thumbnail displayed, click image for full size. Ketamine
Can you use a dehumidifier to dry 0.5-1liter of liquid ketamine or would it suck up some of the ket as well (I know of the other methods)

How do you flavour ket.Do you just simply add in some food flavouring liquid while you are drying it ? How do you workout how much to add into it ?
4 posts and 2 images omitted. Click View Thread to read.
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Archie Blittingmurk - Mon, 25 Sep 2017 17:01:57 EST +YUSEic8 No.78869 Reply
>>78862
if someone had "vanilla K" i'd refuse to buy... unless i was desperate for K for some reason.
>>
Eliza Dozzlehall - Thu, 28 Sep 2017 20:17:54 EST qV/Fy1Bz No.78870 Reply
1506644274627.jpg -(33182B / 32.40KB, 480x528) Thumbnail displayed, click image for full size.
>>78861
I can't even comprehend him writing all of this and thinking it's a good career choice unironically.
>>
Lydia Honeystock - Sat, 30 Sep 2017 06:26:05 EST H2dReURr No.78871 Reply
>>78869
What if it had sassafras extract as flavoring?

A /chem/ thread not about drugs

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- Wed, 20 Sep 2017 11:31:48 EST yU3xLtgU No.78855
File: 1505921508942.jpg -(505047B / 493.21KB, 2304x1728) Thumbnail displayed, click image for full size. A /chem/ thread not about drugs
This is a thread about pool chemistry since it's pertinent and relevant to my daily duties.

What I wanna know is if Sodium Bicarbonate has a pH of about 8 how then is it helping me keep my pH between 7.4-7.8?

Seriously, this is the hardest thing to explain to non chemistry enthusiast coworkers of mine. That and the relationship between Cyanuric Acid and Free Chlorine
4 posts and 1 images omitted. Click View Thread to read.
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Priscilla Summleworth - Fri, 22 Sep 2017 18:43:30 EST hBAZGxou No.78865 Reply
b/c it's dilute silly

didn't you ever have a chemistry set as a kid? dilution is like one of the only things you can even do with them these days

if you add 100 gallons of pH 8 to 1000 gallons of pure water you're gonna get a pH of like 7.2
>>
Phineas Blatherman - Sun, 24 Sep 2017 16:43:22 EST EmAQ3RSJ No.78868 Reply
1506285802300.jpg -(127412B / 124.43KB, 500x375) Thumbnail displayed, click image for full size.
>>78864
My level in chemistry is like 1000 level course in college plus more reading on my own. I understand how cyanuric bonds to the FC to keep it in the pool. I'm fuzzy on the carbonate buffering. pH is wacky in a few places and I'm trying to pin down a cause and also they may have me train employees and I like to know everything and assume others would as well instead of having to dig for the information like me.

Tree growing

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- Sun, 18 Jun 2017 11:26:00 EST ZPX2kpEE No.78694
File: 1497799560552.png -(771440B / 753.36KB, 639x375) Thumbnail displayed, click image for full size. Tree growing
I just read on circlejerk that some trees can reach 100ft to 300ft in a matter of a few years, if this is true why dont we just farm trees instead of cutting down rain forests?

I mean it seems possible, you might have to stick to certain types of wood but still, on top of that you could plant a shit load more trees to help with climate change.

I'm no expert though, just some thoughts.
14 posts omitted. Click View Thread to read.
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Nell Cinkinped - Thu, 07 Sep 2017 14:53:13 EST hBAZGxou No.78842 Reply
bamboo and hemp are both very strong in tension but also very flexible and therefore not very strong in compression. there are different kinds of strength required for different applications

Cones rods

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- Sun, 20 Aug 2017 22:54:37 EST 72cJMkb0 No.78777
File: 1503284077101.jpg -(182636B / 178.36KB, 1328x747) Thumbnail displayed, click image for full size. Cones rods
How many molecules of air can your iris pik up?
Aka. How much in a single dot of air
1 posts omitted. Click View Thread to read.
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Edwin Trotway - Wed, 30 Aug 2017 01:03:57 EST vSFc8qUQ No.78800 Reply
how many photons or something?? or are you talking about field of view. Field of view is pretty blurry lines as far as what is being fully perceived and what is peripheral.
>>
Charles Pockford - Sun, 03 Sep 2017 14:05:40 EST +YUSEic8 No.78819 Reply
>>78778
This is the funniest comment on 420chan right now

genetic diversity

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- Tue, 04 Jul 2017 23:34:57 EST BSeQaa1k No.78720
File: 1499225697763.jpg -(193016B / 188.49KB, 1500x1125) Thumbnail displayed, click image for full size. genetic diversity
How important is genetic diversity?

My mother and father are very far removed, my father being mostly Slavic/Eastern European, and my mother being mainly Celtic. My paternal grandparents are also very distant from each other, my paternal grandmother being Russian/Belarusian, and my paternal grandfather being Ukrainian and Turkish. However, it turns out that my maternal grandparents are third or fourth cousins, so I guess there is some inbreeding there. Realistically, what are the impacts of this?
15 posts and 1 images omitted. Click View Thread to read.
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press !XIxc6BpKnU - Fri, 01 Sep 2017 11:05:51 EST ak42GqP4 No.78811 Reply
1504278351531.png -(1349B / 1.32KB, 153x71) Thumbnail displayed, click image for full size.
DICKS EVERYWHERE

ethanol without methanol

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- Sat, 05 Aug 2017 11:06:50 EST Sj2brtVd No.78760
File: 1501945610321.png -(112884B / 110.24KB, 300x366) Thumbnail displayed, click image for full size. ethanol without methanol
I got some 70% denatured alcohol but now I hear it is deliberately poisoned with methanol to prevent consumption (what kind of asshole would do such a thing is beyond me). Do you know of any way to get a solution of just ethanol, without methanol, from common shops?
3 posts omitted. Click View Thread to read.
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Hedda Saffingchad - Mon, 07 Aug 2017 03:46:53 EST +YUSEic8 No.78768 Reply
>>78762
18% is probably a bit high without the turbo yeasts, the highest % i've managed was 15% with a very good yeast. But you can get up to around 30% with freeze distillation (fractional freezing)
>>
press !XIxc6BpKnU - Mon, 07 Aug 2017 04:02:05 EST PJ0/E4z+ No.78769 Reply
1502092925674.png -(149512B / 146.01KB, 391x391) Thumbnail displayed, click image for full size.
  1. mix water, yeast nutrients, tomato paste and citric acid
  2. make yeast starter
  3. add yeast to the sugar sludge
  4. build still while waiting for fermentation and settling to complete

or just order non denaturated hooch on the internet
homedistiller.org
>>
Bombastus Werrywag - Mon, 07 Aug 2017 09:04:18 EST RP4l/Dxt No.78771 Reply
>>78762
To my knowledge, methanol doesn't form an azeotrope with ethanol. Anhydrous samples can be distiled and collected that way. If it's 30% methanol, you can just distill out 30ml of a 100ml sample and it should be fine once the temperature reaches 75C

ALIENS!

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- Tue, 13 Jun 2017 06:18:18 EST aZjxDii8 No.78682
File: 1497349098334.jpg -(42883B / 41.88KB, 475x288) Thumbnail displayed, click image for full size. ALIENS!
in businesses there's a book that has a phone number for a place you call in case of extra terrestrials, what's their number?
someone should call them and let them know that you've found an alien who's claiming key word: Jesus Christ!
3 posts omitted. Click View Thread to read.
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Bombastus !uYErosQbLM!!Mybq1UbK - Fri, 23 Jun 2017 13:02:47 EST E1Us5n5n No.78706 Reply
>>78699
POKEMON
POKEMON MASTER
POKEMON ARE THE CHAMPIONS
>>
Bombastus Werrywag - Wed, 28 Jun 2017 02:08:03 EST 0tetFdrb No.78713 Reply
>>78709
y u ruin our perfectly good thread?
>>
John Dartville - Thu, 03 Aug 2017 18:03:31 EST ORz+tP6a No.78759 Reply
Fuck now I want a cig

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