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Organic Chemistry

All chemistry involving organic compounds (those with C-H bonds).

  1. Started by interlude,

    Can anyone think of a natural polymer that is ethanol soluble and water insoluble?

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  2. Started by willferral,

    Anyone know how to make Glycolaldehyde? thanks

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  3. If I combine a compound which contain a ratio of 3/8 hydrogen/oxygen and heat it to 2600 F, according to PV = nRT how much will the pressure increase when it reaches ignition temperature (1058 F), and how big do I need the container to avoid it exploding and spewing lava everywhere? Yes I am noob so please talk stupid to me. The compound has only hydrogen, carbon, oxygen and nitrogen.

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  4. Started by willferral,

    Anyone know how to make this? Not the kind for glue but for varnish that is clear and miscible with various solvents. I can buy Glyoxal and Urea, but can't seem to find anyone who sells Urea Glyoxal.. Thanks for any help.

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  5. Hi, I have some laropal A81 which I want to use in a varnish. It is a aldehyde resin synthesized from urea, isobutyraldehyde, and formaldehyde. I'm wondering if I could catalyze it similar how to Urea Formaldehyde is used in varnish and catalyzed commonly with a acid catalyst. I've tried BENZENESULFONIC ACID, 4-METHYL in an amount based of what was used in a conversion varnish product based on it's content of solids of Urea Formaldehyde and it had very little effect possibly making it softer. It certainly didn't cause a curing other than by evaporation which you would get with a catalyzed varnish . I tried Phosphoric acid at a much higher amount than would typically …

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  6. Started by willferral,

    If multiple solvents are mixed together with different evaporation rates will they evaporate together all at the same rate or separately? For example if Butyl Acetate has a evaporation rate of 1. and Acetone has a evaporation rate of 6.1 and ethanol at 1.7 and they are mixed will they evaporate at a uniform rate or will the acetone evaporate first? If I add a slow drying solvent as a retarder such as Diacetone Alcohol with a .12 evaporation rate will it slow down the evaporation of all the solvents or will they evaporate at the same rate and just whatever amount of Diacetone Alcohol I added will be left behind? This is assuming all the solvents are mis…

  7. Started by willferral,

    I'm trying to buy some polycarbodiimide to use as a crosslinker as an alternative to polyaziridine. From what I've read they both work in a similar fashion. My problem is I can only find it as a waterbased crosslinker with about 60% of it being water. I want to use it with a solvent which wont mix with water.. Would it be possible to remove the water from it? I was thinking of heating it up and adding a solvent that wont evaporate at waters boiling point like xylene.. or maybe mixing it with Isopropanol and freezing it and then removing the frozen part? I'm not a chemist and I don't know the freezing or boiling point of Polycarbodiimide... Assuming it has a …

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  8. Started by Ertox,

    Hello everyone, I'm new to the forum and I'm french so, sorry for the mistake! I'm doing a presentation on an internship in which I reduced an alkane to an alkyne. To do this, we used paladium on carbon with hydrogen gas. Unfortunately, I can't find anything on the internet about this... I "imagined" this shema on the assumption that it was the same as for alkenes, but it doesn't really seem professional. If anyone can help me, I'd really appreciate it. Thanks !

  9. Started by tareek,

    How do 2 equivalents Grignard react with benzoic acid. The first one will deprotonate the acid proton. But will the second one attack the carboxylat ? By the way we are using a weak acid

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  10. Started by ganeborgg,

    Hi! Does anybody know which protective groups of primary amines remain stable under the action of nitric and sulfuric acids in the nitration reaction? I also want to find out the conditions for the appending and removing of such protective groups. Thanks in advance!

  11. I've tried using the following reactants in a Hantzsch type reaction to form a 1,4-Dihydropyridine: Propiolamide, Anisidine, Benzaldehyde. The reaction should've given the yellow product (5-(1-aminovinyl)-1-(4-methoxyphenyl)-4-phenyl-1,4-dihydropyridine-3-carboxamide). I have since synthesized the 1,4-DHP through a different method and attached its H-NMR spectrum in DMSO below 1). The compound that I've isolated in this synthesis was a red-yellow product that had the same mass as the 1,4-DHP. The signals in the H-NMR didn't match the 1,4-DHP. I've attached 2 spectra of this byproduct below: 2) in DMSO, 3) in Methanol. The spectra show clearly that …

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  12. What's the best supplement for this please.i understood that each supplement has it's unique detoxifying mechanisem. Maybe bentonite is a good supplement. Please read and explore for me please I really need your help people

  13. I need help figuring out the explanation for this question: The reaction obtained by treating 3-bromo-2-methylpentane with sodium tert-butoxide in ethanol is: A. Regioselective B. Regiospecific C. Stereoselective D. Stereospecific E. Exergonic (N.B. only one answer is allowed) thank you in advance

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  14. Started by sosnas1994,

    Can you look at my mechanic reaction of isopulegon from citronellol? I dont know how to write a proton transfer and i dont know the rest is correct

  15. Do they mix/miscible without separating?

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  16. For example i have this exercise that something like that will be on my exam, i just want to understand it, from where and how to begin ranking idk why but it seems so hard to me

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  17. In our database, we have a substance called "CARBON, TOTAL ORGANIC", but our client uses the newer list of EPA characteristics that doesn't include this name instead, it has the following list of Carbons. What would be the equivalent of "CARBON, TOTAL ORGANIC" in the EPA list below, so I can change the name and they can import data from our database? ChatGBT says that it could be "Carbon fraction, particulate organic material." Thank you Carbon, Carbon Delta, Carbon Delta 13, Carbon Dioxide (CO2)/Nitrogen (N2) Gas Ratio, Carbon Dioxide, fixed CO2, Carbon Dioxide…

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  18. Started by StringJunky,

    I'm an angler and getting into the nitty-gritty of bait-making. I bought a mixture containing caprillic, capric and lauric acids; C8, C10, C12 respectively. Is there a straightforward way I can separate these to use individually? I think one can separate higher chain acids by freezing. I'm using the 8, 10, 12 carbons because they don't wax up in sub-10c temperatures. I also have C4 and C6 acids but they are already separate. This oil is coconut oil I think it's fractionated somehow to remove C14 and higher in the oil. It doesn't have to be high purity. Is it usual for oils like coconut to only have even numbered carbon acid chains in them?

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  19. Hello, I have a question or two that I need help with: What happens when you put magnesium bisglycinate and citric acid into water solution? Does magnesium change form here? Kind regards, IN

  20. Started by observer1,

    does the reaction :- Ca(CH3COO)2 + 2NaCl ---> 2CH3COONa + CaCl2 occur? word equation :- Calcium acetate + salt ---> sodium acetate + calaium chloride

  21. Hi! I've been trying to understand the mechanism of the reaction below! Can someone help me solve this? I started with aminopyridine attacked beta site of the a,b-unsaturated ester. But not quite understand cyclization and acyl transfer part.. Thank you very much for your help in advance!

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  22. Started by glueboy,

    I'm looking to make a very hard material, to do building with. But the problem is, I think I may be making a huge fire hazard. So if I get iron powder, and I mix it with so much decomposed oil (very crude), and then I dry it further on the stove on high heat to make a hard brick, I'm thinking its actually extremely tough stuff, as strong as bitumen. But, Does this act like highly flammable thermite? I may be making thermite by mistake, Cody on the internet has a plaster and aluminium thermite video, and this seems similar, So I'm actually making a big mistake possibly, Anyone can help me with this one? So once thats cleared up, and I can probably do the test my…

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  23. How to Convert Diffusion Rate to Hertz - Hi, new here. Does anyone know if it is possible to convert the molecular diffusion rate to a frequency in hertz?

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  24. Started by PeterBushMan,

    YouTube video -"1000 ways to die #316" How did he die? I did not understand the last part well. English is not my first language. is it because he smoked, that lit he's cream?

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