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poormanschemist
A review of reagent tests used to check common pharmaceuticals.
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National Institute of Justice Color Test Reagents/Kits for Preliminary Identification of Drugs of Abuse:
https://www.ojp.gov/pdffiles1/nij/183258.pdf
The Development Of Paper Microfluidic Devices For Presumptive Drug Detection:
https://sci-hub.se/10.1039/C5AY01432H
The Use Of Presumptive Color Tests For New Psychoactive Substances:
https://sci-hub.se/10.1002/dta.1847
Tackling Poor Specificity of Cocaine Color Tests by Electrochemical Strategies:
https://sci-hub.se/10.1021/acs.analchem.8b00876
Chemical Profiling Of Cannabis Sativa From Eleven Tanzanian Regions:
https://www.researchgate.net/publication/370534120_Chemical_profiling_of_Cannabis_sativa_from_eleven_Tanzanian_regions
The ISCC-NBS Colour System
https://www.munsellcolourscienceforpainters.com/ISCCNBS/ISCCNBSSystem.html
Chemistry and Reaction Mechanisms of Rapid Tests for Drugs of Abuse and Precursors Chemicals
https://www.unodc.org/pdf/scientific/SCITEC6.pdf
A video on the chemistry of the phenethylamine hallucinogens.
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Synthesis of Conformationally Restrained Serotonin 2A Agonists:
https://www.docdroid.net/CyL8RLd/thesis-pdf
Color Test Reagents/Kits for Preliminary Identification of Drugs of Abuse:
https://www.ojp.gov/pdffiles1/nij/183258.pdf
An explanation of why this prep won't work and how to fix it so that it will.
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YouTube Forensic Chem Paper on DMT: https://www.youtube.com/watch?v=xLx3tOLH3C4&t=22s
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Proving that the benzaldehyde prep from benzyl alcohol using (bis)pyridinesilver(I) permanganate did indeed work by measuring the melting point of the benzaldehyde dinitrophenylhydrazone obtained from the experiment.
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In this video I demonstrate the extremely easy prep of benzaldehyde from benzyl alcohol using (bis)pyridinesilver(I) permanganate in dry benzene. The prep takes about 30 minutes. The paper this is taken from is "Bispyridinesilver permanganate[Ag(C5H5N)2]MnO4: an efficient oxidizing reagent for organic substrates" and it's DOI is 10.1016/S0040-4039(00)86758-1.
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Preparing the reagent needed for the prep of benzaldehyde from benzyl alcohol.
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Verifying that the copper chromite catalyst that I made does work by using it to make pyridine from niacin. The thumbnail is a picture of vapor deposited niacin crystals on the side of the flask.
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Making benzene by the decarboxylation of sodium benzoate.
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In this video I carry out the prep of copper chromite Cu2Cr2O5 which is used as a catalyst in organic chemistry. It can be used to catalyze the thermal decomposition of niacin into pyridine and benzoic acid into benzene.
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Prep Protocol For Copper Chromite
12.6 grams ammonium dichromate
25 grams copper(II) sulfate pentahydrate
42 mL of 10% aqueous ammonia
260 mL of 10% acetic acid.
1. In separate beakers dissolve the ammonium dichromate in 33 mL of distilled water and the copper(II) sulfate pentahydrate in 60 mL of hot water.
2. Slowly add the 10% aqueous ammonia to the beaker containing the ammonium dichromate solution with stirring in order to convert it into an ammonium chromate solution.
3. Slowly add the solution of of ammonium chromate to the copper(II) sulfate solution with rapid stirring. The brick red copper ammonium chromate will precipitate in an exothermic reaction. Allow the mixture to stir for about 5 minutes to ensure that the reaction is complete.
4. Filter out the precipitate using vacuum filtration. This filtration can be difficult and it is not necessary to filter to complete dryness.
5. Transfer the copper ammonium chromate paste to an evaporating dish and mostly dry it out over a boiling water bath.
6. Crush the mostly dry copper ammonium chromate to a fine powder. Return to the evaporating dish to complete the drying process.
7. Transfer the dry copper ammonium chromate into a crucible and heat the powder over an open flame. Heat gently for about 10 minutes thereafter increasing in intensity until the temperature is approximately 400 oC. Maintain this temperature for about 10 minutes after which the powder should have turned completely black.
8. Once the catalyst is cooled add it to a beaker containing 130 mLs of 10% acetic acid solution with stirring. Allow to stir for about 10 minutes.
9. Decant the supernatant and then wash with another 130 mLs of 10% acetic acid for about 10 minutes.
10. Allow the solid to settle for about 10 minutes.
11. Separate the copper chromite catalyst from the liquid by vacuum filtration rinsing all the solid from the beaker with distilled water.
12. Dry the powder in an evaporating dish to obtain the dry catalyst. Copper chromite is stable with regards to moisture and air.
Dougs Lab video on copper chromite prep: https://www.youtube.com/watch?v=4L5AGGfxFBc&t=33s
An odd and obscure compound from the pages of the Handbook of Preparative Inorganic Chemistry (pages 296-297).
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I've officially reached my limit with the Safety Cult.
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A very easy prep of a polyoxometalate whose formation was used for the determination of phosphate and phosphoric acid. This is then easily reduced to molybdenum blue.
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Testing a very touchy flash powder mix.
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How to make cesium tetrachloroiodate from cesium chloride, iodine, and chlorine gas.
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In this video I carry out the classic prep of ferrous sulfide (hydrogen sulfide generator food) using 7 parts iron and 4 parts sulfur by weight but with a twist. Apparently if your iron is damp you don't get a hard but easily ground solid. Instead you get ferrous sulfide lava and then a ferrous sulfide rock. Its fun to play with.
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Concluding the recycling of mercury waste to recover pure mercuric acetate. Special thanks to everyone who helped out with the software issues that kept this video from being uploaded sooner.
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Part 2 of recycling mercury waste.
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In this video I process all of the mercury waste I've accumulated over the years from doing preps of mercury compounds.
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This video is a little choppy since it's pulled from footage that was originally going to be a single video with the potassium scandate experiments.
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In this video I create tantalum pentachloride by direct chlorination of the hot metal as well as by chlorination of a heated mixture of tantalum pentoxide and sugar carbon. Both methods work although direct chlorination of the metal is the easier of the two.
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I bought what was supposed to be 99.9% pure lutetium metal from Luciteria on ebay and they sent me something that was far from 99.9% pure. Of course I tried to resolve this with the vendor but the net result of that was him basically telling me to go F myself. Don't buy from this assclown. Buy from jdchemist instead (website linked below). I've bought elements from JD for over 4 years and his stuff is always exactly what he says it is. His customer service is also far, far better.
JDchemist Website: https://the-collectable-periodic-table2.mybigcommerce.com/product-category-1/
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In this video I create tantalum pentoxide from tantalum metal by dissolving the metal in molten KOH, boiling the resulting potassium tantalate in dilute acid, and finally calcining the hydrated tantalum pentoxide. This video also shows why tantalum crucibles should never be used with molten alkali.
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Educated redneck makes obscure and exotic chemical compounds in his backyard.
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