Chemicals in medicines Rakesh Mohan Hallen The words medicine’ and ’drug’ are often used in our country to mean the same substances: any substance‚ manufactured artificially‚ which can help recovery from sickness‚ relieve symptoms or modify a natural process in the body. A medicine is often a mixture of several chemical compounds. Even if it has only one active component compound often other substances are used as fillers or binders to give it bulk. Chemistry‚ the science related to chemical substances
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Chemistry Lab Report Purpose The purpose of this lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A‚ The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder‚ pipette
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In order to study the influence of reaction time‚ acetophenone with complex 2 (0.1 mol%) under standard conditions was monitored by GC-MS analysis taking 0.1 mL aliquots of the reaction mixture at intervals of 1 h. As can be observed in the conversion vs time plots‚ the formation of 1-phenylethanol was increased with the progress of the reaction‚ reached a maximum and then remained unchanged (Fig. 4). Reasonably good conversion (97.4%) for the formation of 1-phenylethanol was observed at the optimum
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Name: ____________________________________ Locker Number: ____________________________ CHEMISTRY 354-355 Experiment 2 SOLUBILITY 1. Part A. Solubility of Solid Compounds. Use your observations to complete the following table‚ rating each system as soluble‚ insoluble‚ or partially soluble. Organic Compound Benzophenone Water Methyl Alcohol Hexane Malonic acid Biphenyl 2. Considering the polarities of the compound and the solvent and the potential for hydrogen bonding‚ answer the
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addition gives the product high enantioselectivity. When the conditions of this reaction were researched‚ it was determined that if the catalyst had bulky substituents‚ the product would have higher enantioselectively. When a catalyst was present‚ propanol was added to trans-beta-nitrostyrene. The product of this reaction was not formed for four days when the catalyst was in pure water. The catalyst used in this reaction was the most successful when using Michael addition to form nitroalkenes from
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ASEPTIC TECHNIQUES AND SOURCES OF MICROBIAL CONTAMINATION. Introduction The spread of infections has come to a point where it has become catastrophic. Aseptic technique is the method used to prevent contamination of infections. It is widely used in hospitals‚ pharmacy‚ and pharmaceutical industries and in laboratories. Different establishments have come up with more ways to improve infection control. In hospitals health care acquired infections are costing the NHS £1 Billion a year and
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either be a mixed between SN1 and SN2 because the substrate is a secondary alcohol. Bromide and chloride were both good nucleophiles‚ but bromide was the better nucleophile in 2-butanol as it yielded 78‚63% of 2-bromobutane. 3. In 2-methyl-2-propanol Since the substrate is a tertiary alcohol‚ SN1 should be favor regardless of the strength of nucleophiles. Tertiary alcohols are able to form very reactive carbocations that quickly combine with nucleophiles. This occurs much faster than the nuclephile
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Ethanoate combination of Methanol and Carboxylic Acid doesn’t have a strong smell and smells somewhat like water. Butyl Ethanoate formed by Butanol and Carboxylic Acid has a very sweet and fruity smell. Propyl Ethanoate formed by Propanol and Carboxylic Acid consist of a strong nail polish remover smell. Ethyl Ethanoate formed by Ethanol and Carboxylic Acid has a weak nail polish remover smell when compared to Propyl Ethanoate. Draw structural diagram equations
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1. Disposing of Waste - Teachers should be aware of the appropriate method of disposal for any chemical used in the school laboratory. When in doubt‚ refer to the MSDS‚ a disposal manual‚ or the source of the chemical. a. Classification of Hazardous Waste The Environmental Protection Agency classifies wastes as: Ignitable: has a flash point below 140°C‚ is an oxidizer‚ or is an ignitable compressed gas. Corrosive: has a pH equal to or below 2.0 or a pH equal to or greater than 12.5. Reactive:
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Report on TREATMENT AND DISPOSAL OF CHEMICAL WASTES IN CHEM 111.1 PHYSICAL CHEMISTRY LABORATORY Submitted by: Christian Manahan Anna Esperanza Legaspi CHEM 180 – X 2nd Semester AY 2012-2013 Date Presented: March 21‚ 2013 Date Submitted: March 22‚ 2013 Prof. Josefina L. Solivas I. Introduction Chemicals have been indispensable in the everyday lives of humans. Their uses have made life easier and better. However‚ their effects on the environment have been accumulating and
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