composed of a compound referred as bis-GMA‚ or bisphenol A glycidyl methacrylate. This aromatic methacrylate is considered to be a rigid polymer because of the benzene rings near its center‚ and also provide specific sites for free radical polymerization from its terminal methacrylate groups. Since this structure has hydroxyl groups near the benzene ring‚ this polymer is considered to have high viscosity. Since high viscosity will affect the rigid structure after polymerization‚ a compound‚ typically triethyleneglycol
Premium Functional group Oxygen Molecule
The reaction mixture was refluxed at 78 °C for 2 h. The mixture was filtered and washed with methanol to give white solid (sodium 6-oxidonaphthalene-2-sulfonate). 1‚4-bis(bromomethyl)benzene‚ M5 (4.54 g‚ 17.2 mmol) and sodium 6-oxidonaphalene-2-sulfonate (0.84 g‚ 3.13 mmol) were dissolved in 30 ml of DMSO. The mixture was stirred at room temperature overnight. The mixture was poured into ice cold acetone with continuous stirring. The
Premium Chemical reaction Oxygen Ethanol
On August 9‚ 2000‚ Bridgestone/Firestone‚ Inc. officially announced that it was recalling 6.5 million of its Wilderness AT tires‚ most of which had been installed on Ford’s popular SUV‚ the Explorer. It was reported that Explorers equipped with Wilderness AT tires had been involved in a large number of rollover accidents on the USA high way leading to more than 170 deaths and over 700 injuries‚ and more than 40 deaths in the other countries. After August 2000‚ Ford announced a recall of more than
Premium Quality management Quality control Ford Motor Company
Jenna Nadia Rasbi Putri Amianna / 114214027 Small Steps for a Bigger Change Realize it or not‚ we are now facing a serious crisis on our nature; the crisis of global warming. Global warming itself is a term used to describe the change of the temperature of the earth that can finally change the climate on earth. We have known it for a long time that our earth is becoming hotter year by year. There are a lot of things that can cause global warming. Air pollution is one of the causes that can
Premium Oxygen Carbon dioxide Ozone
Experiment #1: Thin-Layer Chromatographic Analysis of Drug Components | Performed on: Wednesday‚ May 8th‚ 2013 | | | 5/15/2013 | | Introduction: The goal of this experiment was to identify an unknown analgesic drug through the use of thin-layer chromatography. The drugs used were‚ Unknown #1‚ caffeine‚ aspirin‚ and acetaminophen. Thin-Layer Chromatography is a technique for identifying substances using a mobile phase (developing solvent) that draws up through a
Free Chromatography Thin layer chromatography Caffeine
Recently in an article titled “Fracking‚ 2013‚” it was reported that potentially toxic chemicals – including cancer-causing benzene – have been found in the air near fracking sites. (Polsen) Regions containing many drilling rigs have high levels of smog as well as other airborne pollutants‚ including potential carcinogens‚ which are substances directly involved in causing cancer. Benzene and other chemicals that irritate eyes and cause headaches‚ sore throats‚ or difficulty breathing were found in the
Premium Natural gas Petroleum United States
Rgt/Pdt | Structure | Physical Properties | Hazards | acetone | | Physical State: LiquidAppearance: colorlessBoiling Point: 56.20CMelting Point: -95.30CDensity: 0.79 g/cm3 | Causes eye and skin irritation. May cause central nervous system depression. May cause liver and kidney damage. Causes respiratory tract irritation. Extremely flammable. | aniline | | Physical State: LiquidAppearance: oily - colorlessBoiling Point: 1840CMelting Point: -60CDensity: 1.0216 g/cm3 | Combustible. Hazardous in
Premium Respiratory system Inflammation Acetic acid
rapidly decolorizes Br2/CCl4 solutions. b) The compound rapidly decolorizes aqueous solutions of KMnO4. c) The compound readily adds hydrogen. d) The compound is comparable to benzene in stability. Q6. Which reagent(s) would serve as the basis for a simple chemical test that would distinguish between benzene and cyclohexene? a) NaOH in H2O b)
Free Oxygen Alcohol Carbon dioxide
Ethene C2H4 iii. Cycloalkane Cyclohexane C6H12 iv. Alcohol Ethanol C2H5OH v. Ether Methoxy methane CH3OCH3 9. What does an aromatic compound contain? Note all other compounds are aliphatic A benzene ring 10. Give examples of all 3 types of structural isomerism i. Chain
Premium Carbon dioxide Oxygen Ethanol
Accepted 20 August 2009 Available online xxx Keywords: COX-2 Thromboxane synthase Lipoxygenase Homology modelling Docking In an effort to develop potent anti-inflammatory and antithrombotic drugs‚ a series of new 4-(2phenyltetrahydrofuran-3-yl) benzene sulfonamide analogs were designed and docked against homology models of human cyclooxygenase-2 (COX-2)‚ lipoxygenase and thromboxane synthase enzymes built using MODELLER 7v7 software and refined by
Premium Protein Protein structure DNA