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What are the adavantages of using ether as an extraction solvent?
Wiki User
∙ 12y ago
The major disadvantage of using ether as an extracting solvent is that it is very flammable. It also oxidizes into an explosive in some cases, is an anesthetic, and is very vapor dense (meaning it will fall to the floor and move around there).
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoThe main disadvantage of using ether is safety. Ether is explosive, highly flammable, and spontaneously forms peroxides upon contact with air (which are even more explosive). Do not use any ether that is older than 1 year (it should be disposed of safely). When removing ether (ie by rotavap) you must add a little hexane or some other solvent to your flask when the evaporation is nearing completion (because evaporation of ether concentrates the explosive peroxides). Never rotavap ether to completion when it is the sole solvent.
Wiki User
∙ 14y agoEther is highly flammable, use it with caution (ie, use only in the fume hood, make sure there are no open flames in the vicinity, etc.). Ether has a flashpoint well below that of room temperature, meaning its vapor can easily catch fire or explode if you are not careful. Also, ether tends to form peroxides if left for a long period of time, which become explosive when concentrated (since these peroxides have a higher boiling point than that of ether). When removing your solvent after extraction, never evaporate ether to dryness. Always add some hexane near the end of the evaporation to co-evap any possible peroxides.
Wiki User
∙ 14y agoSome reactions produce both nonpolar products and nonpolar sideproducts. If the product precipitates in ether (because of its poor solubility) and the side products are not, then the ether can be added to the product-sideproduct mixture and filtered out. The solid product filtered out will be saved and the rest (the ether and side products) tossed out.
If the product is soluble in ether and the side-products are not, then the solid that is filtered would be tossed out and the ether and the desired product it contains will be kept. Purification of the product could be done by evaporating the volatile ether under a fume hood.
Wiki User
∙ 16y agoinclude low operating temperature and the ability to analyze the reaction with less volatile components
Wiki User
∙ 9y agoThere are several disadvantages to using ether as a solvent. Some of those disadvantages are that ether is highly flammable, it can oxidize into an explosive and it is an anesthetic.
Wiki User
∙ 12y agoit offers easy recovery of extracts since ether has low boiling points it evaporates easily leaving behind the extracted solute
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How do you remove caffeine from a mixture?
Caffeine is removed in factories using super critical fluid extraction. That uses carbon dioxide under pressure (as a liquid) to pull the caffeine out, which can then be evaporated off. Caffeine can be extracted in an laboratory by adjusting to the right pH, followed by extraction with an organic solvent like hexane.
What are the advantages and disadvantages of solvent extraction?
The advantages are: - Goldfish requires less solvent than Soxhlet (solvent in Soxhlet has to reach the siphon level). - Goldfish is quicker because the sample is constantly in contact with the solvent. Source: CECCHI, Heloísa Máscia."Fundamentos Teóricos e Práticos em Análise de Alimentos". Editora Unicamp. 2a Edição. 207p. 2003.
Can you use peroxide after extraction?
Hydrogen peroxide can be used after an extraction but it may irritate the skin. Estheticians recommend using a mild toner instead.
Which of these is a disadvantage of using natural gas?
Extraction through fracking can contaminate groundwater
How do you separate solvent in the ink mixture?
by using an emulsifier or a cleansing agent
Why repeated extraction is better than solvent extraction?
Because you are providing a greater surface area of contact between the aqueous layer and organic layer
What is successive extraction?
Successive extraction of any plant part involves sequential extraction ( e.g. employing soxhlet apparatus or maceration) using solvents with increasing polarity. Following each extraction, the marc (refuse matter that remains after extract has been filtered) will be dried before being extracted using solvent with higher polarity. For example, the following solvents can be used in successive order (lower to higher polarity): petroleum ether then chloroform then ethyl acetate, then methanol.
What is the Process of extraction of volatile oils?
1.Hydro-distillation: water distillation/Stam distillation. 2.Enfleurage: Extraction of delicate perfumes. 3.Eculle: mechanical extraction. 4.Solvent extraction: using lipid solvents.
What are some examples of solvent extraction?
Iodine in water can be separated by using paint thinner as a solvent. Another example is acetone in water. They both have different densities so the water and acetone will separate out.
How do you extract uranium?
Uranium is extracted from ores and minerals using common procedures in chemical industry: grinding, dissolving in acids or bases, filtration, solvent extraction, extraction with ion exchangers, precipitation, drying, reduction with hydrogen etc.
The purpose of using water in organic compound lab?
Water is a common solvent in chemistry; also a washing agent in filtering, water vapors extraction, etc.
What do you use ether for?
An Ether is sprayed into the air intake to start a stubborn engine. It may also be added to the fuel in race cars for extra power. also, Ether is used as a anesthetic for surgery - they started using Ether to replace chloroform which is very toxic
Is hydrometallurgy used in mining copper?
Hydrometallurgy is used for the processing of copper.Example: Leaching of copper oxide ores using a solution containing sulphuric acid. The Copper can then be recovered from solution using solvent extraction and electrowinning.
Advantages of using ether as an extracting solvent?
Some reactions produce both nonpolar products and nonpolar sideproducts. If the product precipitates in ether (because of its poor solubility) and the side products are not, then the ether can be added to the product-sideproduct mixture and filtered out. The solid product filtered out will be saved and the rest (the ether and side products) tossed out. If the product is soluble in ether and the side-products are not, then the solid that is filtered would be tossed out and the ether and the desired product it contains will be kept. Purification of the product could be done by evaporating the volatile ether under a fume hood.
What would happen to the isolation process if you use a more polar solvent such as methatnol inteasd of dietyl ether?
Most of the organic compounds are not sufficiently polar and are insoluble in polar solvent like methanol so only polar fractions may be separated by using methanol.
What is hydrometallurgy?
The use of aqueous solutions for the recovery of metals. Example: Leaching of copper oxide ores using a sulphuric acid solutions (or solution containing sulphuric acid). The Copper can then be recovered from solution using solvent extraction and electrowinning.
Explain the rationale for using a reversed phase C18 column for the determination of caffeine?
It is because the sample which is soft drinks and coffee is decaffeinated by extraction with a chlorinated solvent and the polarity of this material looks similar..
