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Quick detection of sabbles by using marquis treatment Sihotang, Herlince; Ginting, Adil; Siburian, Rikson; Simanjuntak, Crystina
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Methamphetamine or N-methyl-alpha-methyl phenethyl amine is a powerful central nervous system stimulant drug that has an addictive effect when consumed. The number of cases of drug abuse in Indonesia in the last year is most dominated by methamphetamine so that an accurate analysis is needed to detect these compounds. Qualitative rapid detection can be done with marquis reagents which will produce a yellowish green if it is positive for consuming methamphetamine. Student urine samples were extracted with chloroform to separate to form two layers. The top layer filtrate was tested by Marquis reagents. From the test results found no positive Methamphentamine in the urine of class XI IPA students.

Quick detection of sabbles by using marquis treatment Sihotang, Herlince; Ginting, Adil; Siburian, Rikson; Simanjuntak, Crystina
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Methamphetamine or N-methyl-alpha-methyl phenethyl amine is a powerful central nervous system stimulant drug that has an addictive effect when consumed. The number of cases of drug abuse in Indonesia in the last year is most dominated by methamphetamine so that an accurate analysis is needed to detect these compounds. Qualitative rapid detection can be done with marquis reagents which will produce a yellowish green if it is positive for consuming methamphetamine. Student urine samples were extracted with chloroform to separate to form two layers. The top layer filtrate was tested by Marquis reagents. From the test results found no positive Methamphentamine in the urine of class XI IPA students.

Synthesis of Polyurethane from Diphenyl Methane 4,4 Diisocyanate (Mdi) Polymerization with Hydroxilated Avocado Oil Polyol Sihotang, Herlince
Journal of Chemical Natural Resources Vol. 1 No. 1 (2019): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Polymerization between polyol and isocyanate compounds produces polyurethane in different forms. Polyol used in this study utilized spoiled avocado as the oil source for polyol to produce polyurethane. Avocado oil was epoxidized with formic acid (HCOOH) and H2SO4 catalyst at 40 â€“ 45oC followed by hydrolysis reaction to produce polyol reaction. Next polyol was purified and structure confirmation was done using FT-IR spectroscopy analysis. Polyol was then reacted with diphenylmethane 4,4 diisocyanate (MDI) with ratios of (polyol : MDI) 9:1; 8:2; 7:3; 6:4; and 5:5 (v/v) in a total volume of 10 mL with open air stirring at 40 â€“ 45oC to produce polyurethane. Characterization for the form was observed visually followed by the determination of gel content, density and structure using FT-IR spectroscopy. The results of polyol from avocado oil reacted with diphenylmethane 4,4 diisocyanate for each of the mixing ratio to produce polyurethane is gel content of 74.63% to 99.80% where the higher MDI ratio is, the higher gel content becomes. Density determination from the polyurethane produced is between 0.1341 g/cm3 to 0.7220 g/cm3. FT-IR spectrometer analysis to polyurethane produced is marked with the peaks at 3400 â€“ 3300 cm-1, 2270 â€“ 1940 cm-1, 1700-1600 cm-1 and 1590 â€“ 1540 cm-1 wavelengths which are the characteristic of urethane functional groups.

Synthesis 2-((Furan-2-yl) Methylene)-1-Phenilhydrazone from Furfural Results of Corn Isolation and Its Utilization as Corrosion Inhibitor in Zinc (Zn) Metal Sihotang, Herlince
Journal of Chemical Natural Resources Vol. 3 No. 1 (2021): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Synthesis of 2-((furan-2-yl) methylene)-1-phenylhydrazone has been carried out by reaction of condensation of furfural aldehyde groups obtained from the isolation of corn cobs with phenylhydrazine. Furfural condensation with phenylhydrazine was carried out by refluxing in ethanol solvent for 1 hour. Of the 9.6 g (0.1 mol) furfural which was condensed with 5.4 g (0.05 mol) phenylhydrazine obtained yield of 10.54 g (67.02%) phenylhydrazone which was then analyzed by FT-IR spectroscopy showing the presence of vibration C = N in the area around 1597 cm-1. Fenilhidrazone was tested for inhibitor with 78.47% and compared with furfural as much as 58.18%, and phenylhydrazine as much as 50.04%. The results obtained by phenylhydrazone were more efficient at inhibiting the results of 78.47% while furfural and phenylhydrazine were only 58.18% and 50.04%.

Synthesis of Schiff Bases via Condensation of Aldehydes from Ozonolysis of Purple Passion Fruit Seed Oil with Phenylhydrazine and Aniline and Their Utilization as Corrosion Inhibitor on Steel Metal (Zn) in 0.1N HCl Solution Media Sihotang, Herlince; Sitio, Andreas Dani Hotman
Journal of Chemical Natural Resources Vol. 5 No. 2 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i2.13795

Schiff base was synthesized through a condensation reaction between the aldehyde derived from purple passion fruit seed oil and phenylhydrazine (Schiff base I) and the aldehyde derived from purple passion fruit seed oil with aniline (Schiff base II). Aldehydes are obtained from the ozonolysis process of purple passion fruit seed oil using ozone to produce ozonides and then reduced with Zn powder in dilute acetic acid. The formation of aldehyde derivatives of purple passion fruit seed oil is supported qualitatively by the formation of a brick red precipitate through the addition of Fehling reagent and the formation of a silver mirror on the wall of the test tube with the addition of Tollens reagent and a decrease in the number of iodine compared to purple passion fruit seed oil and the results of FT-IR analysis provide a spectrum with a vibration peak at a wave number of 1744.4 cm-1 which indicates the C=O aldehyde group. The aldehyde derivative of purple passion fruit seed oil produced has an iodine value of 110.0467, which is lower than that of purple passion fruit seed oil, which is 122.0644. The formation of Schiff II base resulted in yields of 3% and 70% supported by FT-IR spectrum of vibration peaks at wave numbers 1654 cm-1 and 1602.8 cm-1, which indicated the formation of imines (-C=N-) as a result of condensation between derived aldehyde groups of purple passion fruit seed oil with amine groups of phenylhydrazine and aniline. Testing the iodine number on the Schiff I base and the Schiff II base yielded values of 124.9079 and 117.3266. A corrosion inhibitor test was carried out using the gravimetric method on HCl media with a concentration of 0.1N, 24 hours and various concentrations of compounds 1000, 3000, 5000, and 7000 ppm. Corrosion inhibitor efficiency for purple passion fruit seed oil, Schiff Base I, and Schiff Base II, respectively, were 27.87%, 88.28% and 94.08% at a concentration of 7000 ppm.

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