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CH 3 CH 2 OH + H 2 SO 4 → CH 3 CH 2 OSO 3 H + H 2 O. If the temperature exceeds 140 °C, the ethyl sulfate product tends to react with residual ethanol starting material, producing diethyl ether. If the temperature exceeds 170 °C in a considerable excess of sulfuric acid, the ethyl sulfate breaks down into ethylene and sulfuric acid. [12] [13]
A diuretic (/ ˌ d aɪ j ʊ ˈ r ɛ t ɪ k /) is any substance that promotes diuresis, the increased production of urine. This includes forced diuresis. A diuretic tablet is sometimes colloquially called a water tablet. There are several categories of diuretics. All diuretics increase the excretion of water from the body, through the kidneys ...
1α-Hydroxyvitamin D 5 is a chemical derivative of vitamin D 5.The motive to study 1α-hydroxyvitamin D 5 as a potential pharmaceutical drug stemmed from the tendency of calcitriol, a natural metabolite produced in the kidney, to cause toxic hypercalcemia in patients when dosed at concentrations needed to interrupt prostate cancer cells' cycle and stimulate apoptosis.
The medication is taken by mouth and contains 30 μg EE and 3 mg DRSP per tablet (brand names Yasmin, others) or 20 μg EE and 3 mg DRSP per tablet (brand names Yaz, Yasminelle, Nikki, others). [ 2 ] [ 3 ] A formulation with levomefolic acid ( vitamin B 9 ) has also been marketed (brand names Beyaz, Safyral, others), with similar indications.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
Water softening is achieved by percolating hard water through a bed of the sodium form of cross-linked polystyrene sulfonate. The hard ions such as calcium (Ca 2+) and magnesium (Mg 2+) adhere to the sulfonate groups, displacing sodium ions. The resulting solution of sodium ions is softened.
Disulfiram is a medication used to support the treatment of chronic alcoholism by producing an acute sensitivity to ethanol (drinking alcohol). Disulfiram works by inhibiting the enzyme aldehyde dehydrogenase (specifically the ALDH2 enzyme [3]), causing many of the effects of a hangover to be felt immediately following alcohol consumption.