to be taken into consideration. The heat it gives out vs. the cost per litre; would still be expensive even if methanol the cheapest (per litre) was chosen as its uses a lot more energy so wouldn’t necessarily be cost effective (Gallagher and Ingram, 2000) 5. Use the table to calculate the molar mass of each alcohol. (Relative atomic masses: H = 1, C = 12, O = 16). Alcohol Formula Methanol CH3OH Ethanol C2H5OH Propanol C3H7OH Butanol…
[18]. Demirbas [19] studied a non-catalytic biodiesel production with supercritical methanol, because of the coincident transesterification of methyl and triglycerides esterification of fatty acids which permits a simple process and high yield. Imahara et al. developed the non-catalytic biodiesel production technologies in plants and animals from oils/fats employing supercritical methanol [20]. In relative to this, different techniques for the oil extraction were prepared such as…
The pulverized sample (1.0 g, 60 mesh) was extracted with 20 mL of the 80% methanol for 24 h in a shaking incubator at 25 °C. The crude extract was filtered through a PTEE syringe filter before UPLC analysis. for the calibration curve, the peak area of the isolated phenolic compounds was integrated with the UPLC chromatogram at…
enter the house and allow the stale air to exit. The effects of VOCs can also be lowered by minimalizing exposure to these compounds. An example of a VOC is methanol, a substance which is toxic if ingested because it metabolises to form Formaldehyde (CH_2 O). Methanol (CH_3 OH) is most commonly found in products such as cigarettes as well as in foods or drinks containing aspartame, an artificial sweetener. Formaldehyde is another toxic VOC which can cause the development of cancer. Formaldehyde…
control and a disc with extract and an inhibitory concentration (sub-Mic) was recorded as positive control. Then diameter of zone growth inhibition was measured after 24 hours of incubation at 37 °C. To study on the interactions effect between of methanol extract of bottlebrush and antibiotic, was used Vancomaycin 30 μg/disc and Ciprofloxacin 5 μg/disc antibiotic disc.22 Statistical Analysis: experiments were based on a repeated triple testing. The results were averaged and standard deviation of…
Interaction of concentrated nitric acid and sulfuric acid generated nitronium ion which is electrophile. And methyl benzoate nitration is one of electrophilic aromatic substitution. Nitronium ion will reacts with protonated intermediate at the meta position. After NO2 substituted, it becomes arenium ion intermediate. Then, the remained product HSO4- will attack hydrogen then transfer the proton to methyl 3-benzoate. In the experiment, students placed around 12 drops of concentrated H2SO4 in…
the formation of myristic acid. Ice cubes were added to the solution to cool the solution and once all the ice cubes had melted the precipitate was isolated using vacuum filtration. The product was dissolved in warm methanol and dissolved because of solubility rules. Once the methanol had cooled, 5mL of water was added drop wise to the solution causing the myristic acid to crash out of the solution. The solution was cooled in an ice bath and once recrystallization was complete the crystals…
like Equal and Sweet-n-Low have been linked to diseases such as multiple sclerosis, Alzheimer, colon cancer, lymphomas, and brain tumors, and also, or disorders like chronic migraine headaches. As the human body metabolizes aspartame, it releases methanol, a chemical compound that has toxic and accumulative effect on the nervous system. Despite being naturally…
which is microwave assisted extraction method and soxhlet extraction method. Two different solvent was used in soxhlet extraction method which is polar solvent and non-polar solvent. The oil yield from soxhlet extraction method for 8 hours by using Methanol is 50% while Hexane is 81.82%. The oil extracted from microwave assisted extraction method for 1 hour by using distilled water is 59%. The volume of distilled water used was up 350 mL in order to make sure the reaction was smoothly occur in…
reversed-phase high performance liquid chromatography (RP-HPLC) was developed for the quantitative determination of quetiapine fumarate from marketed bulk tablets. The active ingredient of quetiapine fumarate separation achieved with C18 column using the methanol water mobile phase in the ratio of 30:70 (v/v). The active ingredient of the drug content quantify with UV detector at 359 nm. The retention time of quetiapine fumarate is 5.27 min. A good linearity relation (r2=0.999) was obtained…