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| {{drugbox |
| | #REDIRECT[[Carbamide]] |
| | IUPAC_name = hydrogen peroxide; urea
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| | image = Hydrogen-peroxide-2D.png
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| | image2= urea.png
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| | width = 125
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| | CAS_number = 124-43-6
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| | ATC_prefix =
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| | ATC_suffix =
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| | PubChem = 31294
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| | DrugBank = <!-- no entry -->
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| | C=1 | H=6 | N=2 | O=3
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| | molecular_weight = 94.07 g·mol<sup>−1</sup>
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| | bioavailability =
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| | protein_bound =
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| | metabolism =
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| | elimination_half-life =
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| | excretion =
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| | pregnancy_AU = <!-- A / B1 / B2 / B3 / C / D / X -->
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| | pregnancy_US = <!-- A / B / C / D / X -->
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| | pregnancy_category =
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| | legal_AU = <!-- Unscheduled / S2 / S3 / S4 / S8 -->
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| | legal_CA = <!-- / Schedule I, II, III, IV, V, VI, VII, VIII -->
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| | legal_UK = <!-- GSL / P / POM / CD / Class A, B, C -->
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| | legal_US = <!-- OTC / Rx-only / Schedule I, II, III, IV, V -->
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| | legal_status =
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| | routes_of_administration = topical (teeth or mouth)
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| }}
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| '''Carbamide peroxide''', also called '''urea peroxide''', is an oxidising agent, consisting of [[hydrogen peroxide]] compounded with [[urea]]. The [[molecular formula]] is CH<sub>6</sub>N<sub>2</sub>O<sub>3</sub>, or CH<sub>4</sub>N<sub>2</sub>O.H<sub>2</sub>O<sub>2</sub>. It is white crystalline material that releases oxygen in contact with water.
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| ==Uses==
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| This chemical is commonly encountered in cosmetic [[dentistry]], where it is used to [[Tooth bleaching|"bleach" teeth]]. The active ingredient is [[hydrogen peroxide]], which acts to oxidise interprismatic extrinsic staining within [[tooth enamel]]. There are several methods of applying the peroxide gel to the tooth ranging from night-guard application at home or in-surgery application. The bleaching obtained is proportional to the length of time the peroxide is applied to the tooth, and the concentration used. The concentration most commonly used for tooth whitening purposes is 22%
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| Another application for this chemical is in hair dyes where oxidizing agents are required.
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| The chemical is a skin, eye and respiratory irritant. It is also corrosive and causes burns. It doesn't hurt at 10% concentration (3% peroxide equivalent) but it does hurt at 35% equivalent, causing white [[chemical burn]]s on skin and gums alike.
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| A 6.5% concentration solution is used to loosen and remove [[earwax]]. A 10% solution in [[glycerol]] is used to treat [[ulcer]]s and other lesions in the mouth, and is sold under the trade-name [[Gly-Oxide]].
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| [[Category:Organic peroxides]]
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| [[Category:Bleaches]]
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| [[Category:Antiseptics]]
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| [[Category:Cleaning product components]]
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| [[Category:Ureas]]
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