Acetic acid

INTRODUCTION Throughout history, the unique characteristics and comparative abundance of wood havemade it a natural material for homes and other structures, furniture, tools, vehicles, anddecorative objects. Today, for the same reasons, wood is prized for a multitude of uses(Miller 1999). Wood is made up of cells of varying shapes and sizes (Panshinand Dezeeuw1980). Variations in the characteristics of those cells make woods heavy or light,stiff or flexible, and hard or soft (miller 1999). Knowledge

5-dimethylthiazol-2-yl)-2,5diphenyltetrazolium bromide (MTT) was from Roth (Karlsruhe, Germany). Piperidine was obtained from BDH Laboratory Supplies (England). Trifluoroacetic acid (TFA) was from Fluka (Buchs, Switzerland). N-ethyldiisopropylamine (DIPEA), Triethylamine (TEA), Dimethyl Sulfoxide (DMSO), Acetonitrile

find the molarity of a concentration and the acid-base titration. In part A of this experiment, the molarity of an assigned concentration which was 0.040, was found using formulas that represent molarity. Part B of this experiment, which was titration of an acid and base, was found by a series of steps that involved dropping Sodium Hydroxide from a buret into vinegar, until the perfect shade of pale pink occurred. With the Phenolphthalein, too much acid causes the base to turn a dark pink. The molarity

mixtures. Comparing Rf values were then used to determine the active chemical components in the two analgesics. The overall result was that Acetaminophen exists in Tylenol and Acetylsalicylic Acid exists in Anacin. Introduction The main goal of this lab was to determine which of the acetaminophen and acetylsalicylic acid exists in Anacin and which exists in Tylenol. In order to achieve this goal, Thin Layer Chromatography, an approach that uses the difference in the strength of intermolecular forces and

TLC Analysis of Analgesic Drugs Introduction In this experiment, thin-layer chromatography (TLC) was used to determine the composition of various over-the-counter (OTC) analgesics: Anacin, Bufferin, Excedrin, and Tylenol. The TLC plates were first viewed under ultraviolet (UV) light and then treated with iodine vapor in order to visualize the spotting. Experiment Scheme Initially, sixteen capillary micropipets were created in order to spot the TLC plates. Two TLC plates were then obtained

oven below melting point and recrystallized from ethanol to afford key intermediate-2 .Equal moles of intermediate-2 (0.456g, 0.003mol) in 5ml of ethanol mixed with equal moles of the different aldehyde or ketone was refluxed for 2hrs and glacial acetic acid was added to adjust the pH of the reaction between 5-6. The solid obtained after cooling was filtred, dried and crystallized from 95% ethanol to afford compounds .Ellman’s spectrophotometric analysis [16] was used to determine IC50 values. This method

Furthermore, the applications of SPE are determination of sympathomimetic amines in blood, urine and tissues, Benzodiazepines screening in urine, determination of cocaine and cocaine metabolites and anabolic steroids in urine and Lysergic acid diethylamide (LSD) in blood, serum or plasma. Liquid-liquid Extraction Liquid – liquid extraction is also known as solvent extraction. It is a separation process which is based on the different distribution of the components to be separated between

The purpose of the experiment is to determine the chemoselectivity of different reducing agent or reductant by reducing 3-nitroacetophenone with tin and hydrochloric acid. For this research, 3.45g of tin granular was put into a 100mL of round bottomed conical flask attached to a reflux condenser; then add 1.6585g of 3-nitroacetophenone and 24mL of water. Heat the mixture over oil bath for 90 minutes. At the end of the process, 0.4115 grams of final product were obtained giving a percent yield of

Gas sensor technology is very appreciating in industries and defense since it possesses high sensitivity in gas detection. The most important challenges in transportable devices are sensitivity, selectivity, durability and low power consumption. To solve the selectivity problems, GBISs have been introduced. These latter are able to identify unknown gas’ ionization breakdown voltage. To reduce the breakdown voltage CNT-GBISs are employed [6]- [12] while others studies used MWCNT with a reduction of

Introduction The purpose of this experiment is to analyze the following analgesics: acetaminophen, aspirin, caffeine, and ibuprofen. This analyzes is to be done using thin layer chromatography (TLC). Also, in this experiment we isolate β-carotene from spinach using column chromatography (CC). Chromatography is a separation technique. It separates a mixture in one state of matter by moving it through another substance in another state of matter (Woodford, 2016). Chromatography consists of a compound