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Browse Search Dictionary Quizzes One Good Fact Subscribe Login urushiol Table of Contents urushiol * References Media * Videos URUSHIOL oil Actions Share External Websites Share LEARN ABOUT THIS TOPIC IN THESE ARTICLES: CONTACT HYPERSENSITIVITY * In immune system disorder: Contact hypersensitivity and dermatitis It secretes an oil called urushiol, which is also produced by poison oak (T. diversilobum), the poison primrose (Primula obconica), and the lacquer tree (T. vernicifluum). When urushiol comes in contact with the skin, it initiates the contact hypersensitivity reaction. Read More LACQUER * In lacquer …of the lacquer tree is urushiol (from urushi, the Japanese word for lacquer), a substance that can cause contact dermatitis if the lacquer touches the skin before it has cured. The cured lacquer produces a hard, glossy coating that is highly prized in traditional decorative arts. See also lacquerwork. Read More POISON IVY * In poison ivy The toxic principle, urushiol, is produced in the resinous juice of the resin ducts of the leaves, flowers, fruits, and bark of stems and roots but not in the pollen grains. Being almost nonvolatile, the urushiol may be carried from the plant on clothing, shoes, tools, or soil… Read More POISON OAK * In poison oak These species contain urushiol, and contact with the leaves and sap can cause a severe, itchy, and painful inflammation of the skin. Like many other lobe-leafed plants commonly called “oak,” neither species of poison oak is a true oak of the genus Quercus. Read More POISON SUMAC * In poison sumac …on exposure to air, contains urushiol and is extremely irritating to the skin for many people. The plant is considered more allergenic than the closely related poison ivy (Toxicodendron radicans) or western poison oak (T. diversilobum). The itchy and painful inflammation, known as contact dermatitis, can persist for days or… Read More organic compound Table of Contents organic compound * Introduction Media * Videos * Images More * More Articles On This Topic * Contributors * Article History Home Science Chemistry ORGANIC COMPOUND chemical compound Actions Cite Share Give Feedback External Websites Print Cite Share Feedback By The Editors of Encyclopaedia Britannica • Edit History -------------------------------------------------------------------------------- Table of Contents structural formulas of some organic compounds See all media Key People: Charles Gerhardt Friedrich Wöhler Auguste Laurent Robert Burns Woodward Carl Wilhelm Scheele ...(Show more) Related Topics: protein hormone lipid carboxylic acid hydrocarbon ...(Show more) organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. The few carbon-containing compounds not classified as organic include carbides, carbonates, and cyanides. See chemical compound. The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Adam Augustyn. Ask us a question Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Share Share to social media Facebook Twitter URL https://www.britannica.com/science/urushiol Share Share to social media Facebook Twitter URL https://www.britannica.com/science/urushiol Update Privacy Preferences Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "organic compound". Encyclopedia Britannica, 7 Mar. 2019, https://www.britannica.com/science/organic-compound. Accessed 22 May 2022. Copy Citation Share Share to social media Facebook Twitter URL https://www.britannica.com/science/organic-compound Share Share to social media Facebook Twitter URL https://www.britannica.com/science/organic-compound verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "organic compound". Encyclopedia Britannica, 7 Mar. 2019, https://www.britannica.com/science/organic-compound. Accessed 22 May 2022. Copy Citation