Ethanol, also known as ethyl alcohol, drinking alcohol or grain alcohol, is a flammable, colorless, slightly toxic chemical compound, and is best known as the alcohol found in alcoholic beverages. Why is petroleum ether used in chromatography? The polarity index for petroleum ether (0.1) ...
In addition, it is used for other electronic devices, including cleaning disc cartridge, floppy disk drives, magnetic tape, and the laser tip of the disc driver of CD or DVD player. Isopropyl alcohol can also be used as the solvent of oil and gel as well as for the manufacture of ...
1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride is being used for the synthesis of amides. EDC.HCl is also used as a coupling agent in the preparation of esters from carboxylic acids using dimethylaminopyridine as the catalyst. It is water-soluble carbodiimide, widely used for peptide ...
, quickly stir3 hunder10 ℃. Get dark brown mixture. Static, divide the lower dichloromethane layer, the water layer is extracted by dichloromethane, combined with organic layer, washing the saturated sodium chloride solution, dry sodium sodium sulfate. After oiling the oil ether heat, it is ...
• Methanesulfonyl chloride reacts easily with compounds with active hydrogen, so it can be used to react with amino and hydroxyl groups to introduce methanesulfonyl. • As raw material for methanesulfonic acid production. • The prepared methanesulfonamide is an important intermediate for fine ch...
Which term is used to describe when a substance changes from a liquid to a gas? A. Volatile B. Dynamic equilibrium C. Condensation D. Heat of fusion E. Vaporization State the process by which solids change directly to gases and from gases to solids. ...
What is the boiling point of isopropanol? Isopropanol: Isopropanol is a type of alcohol with the formula C3H8O. Its molar mass is 60.1 g/mol and is used as an antiseptic. Answer and Explanation: The boiling point of isopropanol is around 180° F (82° C). ...
Researchers have used voltages up to +50 kV when creating electrospun fibers in the nano- and microscale. To collect the electrospun fibers, a collector is typically grounded to attract them into a specific area. While it’s true that grounding a collector works well for small thicknesses, ...
The phosphorus pentachloride method is used to prepare acyl chlorides with higher boiling points, but it has limitations in terms of application range and difficulties in handling the resulting phosphorus-containing compounds. The thionyl chloride method offers mild reaction conditions for the synthesis of...
The high catalytic activity of DMAP and PPY can be used for acylating sterically hindered secondary or tertiary alcohols with carboxylic anhydrides or acyl halides when the pyridine method fails. In most cases, it is necessary to use only 0.05-0.2 mol of catalyst per mol of substance and the...