Caffeine Extraction from Tea Pre Lab Report

Topics: Solvent, Material safety data sheet, Oxygen Pages: 2 (662 words) Published: October 22, 2014
Describe an alternative method for evaporation of the CH2Cl2 Can be steamed and then rinsed with ethyl acetate for several hours, and then rinsed with water, or can be soaked in a bath of CO2 and run through water, making carboxylic acid. (2) Caffeine: (4)

Repeated exposure can produce general deterioration of health by an accumulation in one or many human organs. First Aid Measures:
Eye contact - Immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. WARM water MUST be used. Get medical attention. Skin Contact - Immediately flush skin with plenty of water. Cover the irritated skin with an emollient. Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention. Serious Skin Contact - Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek immediate medical attention.

Inhalation - remove to fresh air. If not 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. Loosen tight clothing such as a collar, tie, belt or waistband. Seek medical attention. Ingestion - do not induce vomiting unless directed 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. Dichloromethane: (5)

Causes eye and skin irritation, respiratory tract irritation. Harmful if swallowed and possibly if inhaled. May cause central nervous system effects, and kidney damage. First Aid measure:
Eyes - 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...


References: 1. Chem Spider. 2011. Caffeine. [ONLINE] Available at: http://www.chemspider.com/Chemical-Structure.2424.html. [Accessed 07 October 14].
2. Beverage Answers. 2014. Decaffienated Tea - How is Decaf Tea Made. [ONLINE] Available at: http://www.beverageanswers.com/tea/decaf-tea.html. [Accessed 07 October 14].
3. The Modern Embalmer. 2012. CALL OF THE WILD: 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].
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