Reduction of nitrate takes place when the stored energy in the form of colour centres is released during dissolution of g-irradiated crystalline potassium fluoride in aqueous potassium nitrate solution. Various parameters like dose, amount and storage time of irradiated potassium fluoride which control the yield of nitrite have been studied. Similarly, the effect of concentration of potassium n...

AIM The aim is to assess the effect of desensitizing toothpaste on dentin hypersensitivity. METHODS We searched PubMed, CENTRAL, and Embase on December 20, 2013. RESULTS Out of the 626 articles searched, a total of 31 randomized controlled clinical trials were included. The Standardized mean differences (SMD) for potassium-containing toothpaste (n = 8) was -1.28 (95% Confidence interval (CI...

The general anaesthetic sevoflurane was prepared from chlorosevo ether using two fluorinating agents, potassium fluoride dihydrate in the presence of a phase transfer catalyst and potassium fluoride in the presence of a complexing solvent. A pure sevoflurane product could not be recovered via conventional distillation from the crude reaction mass obtained using the dehydrate (at 72% purity), du...

The first report of the biological production of bromo ochratoxin B by Aspergillus ochraceus Wilh. is presented as well as a study of the influence of potassium bromide, potassium iodide, potassium fluoride, and potassium chloride on the production of ochratoxin A and ochratoxin B. Potassium fluoride and potassium iodide inhibited the growth of the fungus, whereas potassium chloride substantial...

Consumption of acidic foods and drinks and other factors that cause enamel wear are responsible for the daily enamel loss and degradation. Use of some toothpastes that have been showed to possess different properties of remineralisation and/or repair of the enamel surface may help to protect tooth enamel. The aim of this study was to evaluate whether the use of toothpaste containing Zn-carbonat...

The enantioselective synthesis of α-hydroxy esters by ruthenium-catalyzed 1,2-addition of arylboronic acids to tert-butyl glyoxylate is described. The use of RuCl(2)(PPh(3))(3) with (R,R)-Me-BIPAM gave optically active mandelic acids of up to 99% ee. Addition of a fluoride salt such as potassium fluoride (KF) or caesium fluoride (CsF) was effective for achieving high enantioselectivities.

Key words potassium fluoride - amino acid deprotection peptides fluorenylmethyl carbamates amides one-pot synthesis

Effects of 5 kinds of fluorides on the twitch of the sartorius muscle of the bull frog were investigated. All of the fluorides (0.1-2.0 mM) enhanced the twitch evoked by nerve stimulation. The extents of enhancement at 2.0 mM were in the order: stannous fluoride much greater than potassium fluoride greater than sodium silico fluoride greater than sodium fluoride greater than diammine silver flu...

Solutions of sodium fluoride at pH 3 to 4 inactivated enteroviruses, whereas other sodium salts had little or no effect on virus infectivity. Solutions of potassium fluoride also inactivated viruses under similar conditions. Light, temperature, and the presence of organic compounds such as detergents and fecal matter did not affect inactivation of virus by 0.4 M solutions of sodium fluoride at ...

Water quality directly influences individual and public health. Monitoring of water supplies and their sanitation is of paramount importance. The present study aimed to determine the concentrations of fluoride, chlorine, potassium, sodium, and trihalomethanes in the drinking water of five major universities in Iran. This descriptive study was conducted during January 2016-2017. In total, 60 sam...