Caffeine Extraction from Tea Pre Lab Report Essay

attract an alternative method for evaporation of the CH2Cl2 Can be steamed and then(prenominal) rinsed with ethyl acetate for several hours, and then rinsed with water system, or can be soaked in a bath of CO2 and run through water, making carboxylic acid. (2) caffein (4)Repeated expo certain(a) can larn general deterioration of health by an accumulation in sensation or many human organs. First Aid MeasuresEye spot flat monied eyes with plenty of water for at least(prenominal) 15 minutes. Cold water may be employ. WARM water MUST be used. spoil medical attention. Skin equal Immediately flush strip down with plenty of water. Cover the irritated skin with an emollient. stumble begrime fit out and shoes. Wash clothing before reuse. Thoroughly f breedly shoes before reuse. Get medical attention. sedate Skin Contact Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek immediate medical attention.Inhalation remove to new a ir. If non breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention. Serious Inhalation Evacuate the victim to a safe area as soon as possible. free tight clothing such as a collar, tie, belt or waistband. Seek medical attention. Ingestion do not induce vomiting unless tell to do so by medical personnel. Never give anything by mouth to an unconscious person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention immediately. methylene chloride (5)Causes eye and skin irritation, respiratory tract irritation. Harmful if swallowed and possibly if inhaled. May cause central vile system effects, and kidney damage. First Aid measureEyes immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid. Skin flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse. Ingestion If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid. Inhalation remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult,give oxygen. Get medical aid. 6. A rotary evaporator (rotovap) is typically used in chemistry for the removal of result from auditions by the process of evaporation. Can also be used in molecular cooking for the preparation of distillates and extracts.How the rotovap works, is it increases the rate of evaporation of the solvent by reducing the pressure to lower the boiling point of the solvent, rotating the sample to increase the effective surface area and heating the solution. (6) When performing a facile-liquid extraction, the family linearatory funnel should be (c) 3/4 full. List two things you should do before pouring liquid into a separatory funnel be sure the hammer is in the closed positionbe sure the stopcock is sideways tight.D ichloromethane will be the bottom layer, since it has a high density than the aqueous solution. The stopper must be removed from the sep funnel when liquid is being drained from it through the stopcock, so that air can flow in through the top while the liquid is flowing out the bottom.References1. Chem Spider. 2011. Caffeine. ONLINE in stock(predicate) at http//www.chemspider.com/Chemical-Structure.2424.html. Accessed 07 October 14. 2. Beverage Answers. 2014. decaffeinated coffeefienated Tea How is Decaf Tea Made. ONLINE purchasable at http//www.beverageanswers.com/tea/decaf-tea.html. Accessed 07 October 14. 3. The Modern Embalmer. 2012. CALL OF THE barmy TAXIDERMY TANNIC ACID/TANNINS IN EMBALMING. A DEAD-END ROAD TO FORMALDEHYDE-FREE CHEMICALS.. ONLINE Available at http//www.themodernembalmer.com/tannin.html. Accessed 07 October 14. 4. Science Lab. 2013. Material Safety Data Sheet Caffeine MSDS. ONLINE Available at http//www.sciencelab.com/msds.php?msdsId=9927475. Accessed 07 October 14. 5.Science Lab. 2013. Material Safety Data Sheet Dichloromethane MSDS. ONLINE Available at http//wcam.engr.wisc.edu/Public/Safety/MSDS/Dichloromethane.pdf. Accessed 07 October 14. 6. Chem.UCalgary. 2014. Organic Laboratory Techniques. ONLINE Available at http//www.chem.ucalgary.ca/courses/351/laboratory/rotavap.pdf. Accessed 07 October 14.