The entrance of Museum of Contemporary Art, downtown San Diego. Museum of Contemporary Art, downtown San Diego. Founded in 1941 in La Jolla as The Art Center in La Jolla, a community art center, through the 1950s and 1960s the organization operated as the La Jolla Art Museum.
Sorbic acid, or 2,4-hexadienoic acid, is a natural organic compound used as a food preservative. It has the chemical formula C 6 H 8 O 2. It is a colourless solid that is slightly soluble in water and sublimes readily.
Humic acid is a principal component of humic substances, which are the major organic constituents of soil (humus), peat, coal, many upland streams, dystrophic lakes, and ocean water.t is produced by biodegradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid.