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Ethylparaben (ethyl para-hydroxybenzoate) is the ethyl ester of p-hydroxybenzoic acid. Its formula is HO-C 6 H 4-CO-O-CH 2 CH 3. It is a member of the class of compounds known as parabens. It is used as an antifungal preservative. As a food additive, it has E number E214.
Ethyl 2-hydroxybenzoate. Identifiers CAS Number. 118-61-6 ... Ethyl salicylate is the ester formed by the condensation of salicylic acid and ethanol. It is a clear ...
Methyl benzoate can be isolated from the freshwater fern Salvinia molesta. [3] It is one of many compounds that is attractive to males of various species of orchid bees, which apparently gather the chemical to synthesize pheromones; it is commonly used as bait to attract and collect these bees for study.
The Arrhenius equation was used in a study to calculate activation energies for the chlorination of four parent parabens (methyl-, ethyl-, propyl-, and butylparaben) and was found to range from 36–47 kJ/mol. [22] In another study, tap water at 20 °C (68 °F) containing 50–200 μM free chlorine was spiked with 0.5 μM propylparaben and the ...
4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid (PHBA), is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid.It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxybenzoic acid is primarily known as the basis for the preparation of its esters, known as parabens ...
Hagemann's ester, ethyl 2-methyl-4-oxo-2-cyclohexenecarboxylate, is an organic compound that was first prepared and described in 1893 by German chemist Carl Hagemann. The compound is used in organic chemistry as a reagent in the synthesis of many natural products including sterols , trisporic acids , and terpenoids .
An ethoxy group (CH 3 CH 2 O−) is found in the organic compound ethyl phenyl ether (C 6 H 5 OCH 2 CH 3, also known as ethoxybenzene). Related to alkoxy groups are aryloxy groups , which have an aryl group singularly bonded to oxygen such as the phenoxy group ( C 6 H 5 O− ).
[1] [2] DHHB has excellent photostability and compatibility with other UV absorbers and other cosmetic ingredients. [3] DHHB has been approved for the use in sunscreens in the European Union since 2005 with a maximum concentration of 10% [4] [5] and is also approved in South America, Mexico, Japan and Taiwan. [6]