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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 ...
An alternative way of producing potassium nitrate without a by-product of ammonia is to combine ammonium nitrate, found in instant ice packs, [30] and potassium chloride, easily obtained as a sodium-free salt substitute. NH 4 NO 3 + KCl → NH 4 Cl + KNO 3. Potassium nitrate can also be produced by neutralizing nitric acid with potassium ...
C 4 H 7 KO 3: potassium oxybate: C 4 H 7 NaO 3: sodium oxybate (C 4 H 7 NO) n: Poly(N-vinylacetamide) Poly(N-vinylacetamide) C 4 H 7 NO 2: 1-Aminocyclopropanecarboxylic acid: 22059-21-8 C 4 H 7 NO 3: aceturic acid: C 4 H 7 NO 4: aspartic acid Asp: 56-84-8 C 4 H 8: cyclobutane: 287-23-0 C 4 H 8 N 2 O 3: asparagine Asn: 70-47-3 C 4 H 8 O ...
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.
Benzonitrile is a useful solvent and a versatile precursor to many derivatives. It reacts with amines to afford N-substituted benzamides after hydrolysis. [3] It is a precursor to diphenylmethanimine via reaction with phenylmagnesium bromide followed by methanolysis.
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
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.
A solution of 4-nitrophenol appears colorless below pH 5.4 and yellow above pH 7.5. [3] This color-changing property makes this compound useful as a pH indicator. The yellow color of the 4-nitrophenolate form (or 4-nitrophenoxide) is due to a maximum of absorbance at 405 nm (ε = 18.3 to 18.4 mM −1 cm −1 in strong alkali). [4]