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4-Carboxybenzaldehyde (CBA) is an organic compound with the formula OCHC 6 H 4 CO 2 H. It consists of a benzene ring substituted with both an aldehyde and a carboxylic acid, with these functional groups on opposite corners of the ring. This compound is formed in 0.5% yield as a byproduct in the production terephthalic acid from p-xylene. Since ...
For example, potassium oxide is about 83% potassium by weight, while potassium chloride is only 52%. Potassium chloride provides less potassium than an equal amount of potassium oxide. Thus, if a fertilizer is 30% potassium chloride by weight, its standard potassium rating, based on potassium oxide, would be only 18.8%.
4-Formylphenyl boronic acid crystallizes in colorless needles [1] or is obtained as an odorless, whitish powder, which dissolves little in cold but better in hot water. The compound is quite stable [3] and readily forms dimers and cyclic trimeric anhydrides, which complicate purification and tend to protodeboronize, a secondary reaction that occurs frequently in the Suzuki coupling, with ...
15-Crown-5 is a crown ether with the formula (C 2 H 4 O) 5. It is a cyclic pentamer of ethylene oxide that forms complex with various cations , including sodium (Na + ) [ 2 ] and potassium (K + ); [ 3 ] however, it is complementary to Na + and thus has a higher selectivity for Na + ions.
The benzoyl functional group.. In organic chemistry, benzoyl (/ ˈ b ɛ n z oʊ ɪ l /, BENZ-oh-il) [1] is the functional group with the formula −COC 6 H 5 and structure −C(=O)−C 6 H 5. [2] [3] It can be viewed as benzaldehyde missing one hydrogen.
In a laboratory procedure, the oxidation of naphthalene with alkaline potassium permanganate is given, which, however, yields only a yield of 39% 2-carboxybenzaldehyde. [9] Also the oxidation of naphthalene with ozone to 2-formylbenzoic acid offers no significant advantages. [10] Synthese von 2-Carboxybenzaldehyd aus Naphthalin
4-Mercaptobenzoic acid (p-mercaptobenzoic acid, p-MBA) is an organosulfur compound with the formula para-C 6 H 4 (−SH)(−COOH). It is used as a ligand in thiolate-protected gold cluster compounds, such as Au 102 ( p -MBA) 44 .
Potassium benzoate (E212), the potassium salt of benzoic acid, is a food preservative that inhibits the growth of mold, yeast and some bacteria. It works best in low- pH products, below 4.5, where it exists as benzoic acid.