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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 ...
They are produced by the esterification of para-hydroxybenzoic acid with the appropriate alcohol, such as methanol, ethanol, or n-propanol. para-Hydroxybenzoic acid is in turn produced industrially from a modification of the Kolbe-Schmitt reaction, using potassium phenoxide and carbon dioxide. [citation needed]
2-Hydroxybenzoic acid, others 138.031694 C6H6O4: 1,2,3,5-Tetrahydroxybenzene 142.026608 C9H6O2: Coumarin 146.036779 C9H8O2: Cinnamic acid 148.05243 C9H10O2: 2-Methoxy-4-vinylphenol, others 150.06808 C10H14O: Carvacrol 150.104465 C8H8O3: 4-Hydroxyphenylacetic acid, others 152.047344 C9H12O2: 4-Ethylguaiacol 152.083729 C7H6O4: Protocatechuic acid ...
Hydroxybenzoic acid may refer to several related chemical compounds: 2-Hydroxybenzoic acid (salicylic acid, o-hydroxybenzoic acid) 3-Hydroxybenzoic acid (m ...
Monohydroxybenzoic acid may refer to any of three isomeric phenolic acids: Salicylic acid (2-hydroxybenzoic acid, o-hydroxybenzoic acid) 3-Hydroxybenzoic acid (m-hydroxybenzoic acid) 4-Hydroxybenzoic acid (p-hydroxybenzoic acid) Monohydroxybenzoic acids can be degraded by microbes. [1]
Butylparaben, or butyl p-hydroxybenzoate, is an organic compound with the formula C 4 H 9 O 2 CC 6 H 4 OH. [1] It is a white solid that is soluble in organic solvents. It has proven to be a highly successful antimicrobial preservative in cosmetics. [2] It is also used in medication suspensions, and as a flavoring additive in food.
4-Hydroxybenzoic acid 4-O-glucoside is a glucoside of p-hydroxybenzoic acid. It can be found in mycorrhizal (Picea abies-Lactarius deterrimus and Picea abies-Laccaria amethystina) and non-mycorrhizal roots of Norway spruces (Picea abies). [1] The enzyme 4-hydroxybenzoate 4-O-beta-D-glucosyltransferase can be found in the pollen of Pinus ...
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.