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Camphor (/ ˈ k æ m f ər /) is a waxy, colorless solid with a strong aroma. [5] It is classified as a terpenoid and a cyclic ketone.It is found in the wood of the camphor laurel (Cinnamomum camphora), a large evergreen tree found in East Asia; and in the kapur tree (Dryobalanops sp.), a tall timber tree from South East Asia.
When placed on the skin, camphor can be absorbed through mucous membranes or broken skin. This also can be toxic—which is why you should never put VapoRub in or around the nostrils, especially a ...
Le Mort's elixir, consisting of "honey, licorice, flowers of Benjamin, and opium, camphor, oil of aniseed, salt of tartar and spirit of wine," was listed as "Elixir Asthmaticum" in the London Pharmacopoeia of 1721. Its ingredients were assembled according to the humoral theory of the time. Paregoric was used in various formulations for hundreds ...
Camphoric acid, C 10 H 16 O 4 [citation needed] or in Latin form Acidum camphoricum, is a white crystallisable substance obtained from the oxidation of camphor. It exists in three optically different forms; the dextrorotatory one is obtained by the oxidation of dextrorotatory camphor and is used in pharmaceuticals .
It has a fresh camphor-like odor and a spicy, cooling taste. [1] It is insoluble in water, but miscible with organic solvents. Eucalyptol makes up about 70–90% of eucalyptus oil. [2] [3] Eucalyptol forms crystalline adducts with hydrohalic acids, o-cresol, resorcinol, and phosphoric acid. Formation of these adducts is useful for purification. [4]
Capsaicin, menthol (mint oil), methyl salicylate, and camphor are examples of counterirritants. Heat and cold therapy and massage relieve pain by counterstimulation. Heat and cold therapy and massage relieve pain by counterstimulation.
Hydrolysis is the reverse reaction of formation with regeneration of the carbonyl compound.. In the Shapiro reaction tosylhydrazones are used as a leaving group in elimination reactions.
Cleaning experts explain how to dissolve gum fast, even if it's already dried onto the fabric. ... Freeze: If the gum is still soft, place a small bag of ice cubes or an ice pack on the garment ...