Moreover, the procedures gave the products in good yields and short reaction times as well as reusability of the catalyst. In fact, the hydrogen sulfate ion is a relatively weak acid, similar in strength to the acids discussed above. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. The new functionally-structured products, synthesized through these methods, were characterized with IR, 1H NMR, 13C NMR and mass spectroscopy. Ammonium Hydrogen Sulfate: A New Ferroelectric with Low Coercive Field R. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. sulfate, also spelled Sulphate, any of numerous chemical compounds related to sulfuric acid, H2SO4. Also, this adequate catalyst was employed for the synthesis of imidazopyrimidines and triazolopyrimidines via three-component reaction of aldehydes, malononitrile and 2-aminobenzimidazole and/or 3-aminotriazole. They are acidic in nature and may be used as a weaker form of acid compared to sulfuric acid. The chemical compounds with this ion are called bi-sulfates or hydrogen sulfates. This new ionic liquid was employed as an efficient catalyst for the synthesis of 2,2′-arylmethylene-bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) and 1,8-dioxooctahydroxanthene derivatives in C 2H 5OH:H 2O media and under solvent-free conditions, respectively. Hydrogen sulfate, also called bisulfate, is a salt of sulfuric acid and an ion with the chemical formula HSO 4.
In this work, a new nitrogen and sulfur based di-cationic ionic liquid (IL), named 1,4-piperazinium hydrogen sulfate (HSO 4), was simply synthesized from the reaction of piperazine with sulfuric acid, and then characterized with a variety of techniques, including Infrared (IR) and Nuclear Magnetic Resonance (NMR) spectroscopies, Thermo-gravimetric analysis (TGA), Scanning Electron Microscope (SEM), and pH analysis.
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