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1,4-Dichlorobenzene (1,4-DCB, p-DCB, or para-dichlorobenzene, sometimes abbreviated as PDCB or para) is an aryl chloride and isomer of dichlorobenzene with the formula C 6 H 4 Cl 2. This colorless solid has a strong odor. The molecule consists of a benzene ring with two chlorine atoms (replacing hydrogen atoms) on opposing sites of the ring.
1,2-Dichlorobenzene or ortho-dichlorobenzene; 1,3-Dichlorobenzene or meta-dichlorobenzene; 1,4-Dichlorobenzene or para-dichlorobenzene. All three isomers are colorless chlorobenzenes with the formula C 6 H 4 Cl 2. They differ structurally based on where the two chlorine atoms are attached to the ring.
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 ...
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Diethylbenzenes arise as side-products of the alkylation of benzene with ethylene, which can be described as two steps. The first step is the industrial route to ethylbenzene, which is produced on a large scale as a precursor to styrene.
Neomycin/polymyxin B/hydrocortisone, sold under the brand Otosporin among others, is a medication used to treat otitis externa (swimmer's ear) and certain eye disorders. [2] [3] It consists of the antibiotics neomycin and polymyxin B, and the steroid hydrocortisone. [3] It is used as an ear drop or eye drop. [2] [3]
Earwax can be removed with an ear pick or curette, which physically dislodges the earwax and scoops it out of the ear canal. [40] In the West, use of ear picks is usually only done by health professionals. Curetting earwax using an ear pick was common in ancient Europe and is still practised in East Asia.
Para block. The chemicals composing the block vary. The original formulations were based upon naphthalene and then later para-dichlorobenzene, both now known to be hazardous to health by inhalation. In some areas, the use of para-dichlorobenzene-based blocks has been banned; in other areas para-dichlorobenzene blocks or "para blocks" are still ...
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