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p-DCB is produced by chlorination of benzene using ferric chloride as a catalyst: . C 6 H 6 + 2 Cl 2 → C 6 H 4 Cl 2 + 2 HCl. The chief impurity is the 1,2 isomer.The compound can be purified by fractional crystallization, taking advantage of its relatively high melting point of 53.5 °C; the isomeric dichlorobenzenes and chlorobenzene melt well below room temperature.
Phenazone (INN and BAN; also known as phenazon, antipyrine (), antipyrin, [1] or analgesine) is an analgesic (pain reducing), antipyretic (fever reducing) and anti-inflammatory drug.
Ear drops should only be used in the affected ear. Ear drops are usually used for a short duration of time. Make sure to only use it as prescribed. [7] Cotton buds should not be used to clean the inside of the ear since this can cause inflammation and make things worse. [7] Ear drops should not be used for a ruptured eardrum (a hole or tear in ...
This page was last edited on 18 August 2008, at 18:05 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Ear drops are commonly used to treat swimmer's ear. Ear instillation is the process of introducing otic medication or other liquids into the ear canal . Proper care is needed in delivering such liquids.
Google Input Tools, also known as Google IME, is a set of input method editors by Google for 22 languages, including Amharic, Arabic, Bengali, Chinese, Greek ...
Cerumenolytics are administered directly into the ear, which is a form of topical administration that can be specified as "ototopical." [3] [4] Generally, the use of a cerumenolytic involves instilling several drops of the product into the affected ear once or twice daily for a treatment duration of 3 to 5 days.
Otomycosis commonly worsens from overuse of antibacterial ear drops, which should never be used for more than 7 days. In such cases the fungus is an opportunist that results from antibacterial suppression of the normal bacterial flora, combined with the steroid the drops also contain.