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mol l− methanesulfonic acid and water. the exchange of the commonly used hcl with methanesulfonic acid has two advantages: (i) the obtained baseline during the separation is almost horizontal and (ii) it is not necessary to use an inert hpic equipment as the methanesulfonic acid is not as aggressive...
purchased in early april. juice and ether extracts were prepared and stored in a deep freezer until chemical investigations and patch tests could be performed. known constituents were obtained from investigators who have isolated asparagus components. image asparagus-sensitive patients were patch tested with...
fluorine at °c ( °f) to form platinum tetrafluoride . [ ] it is also attacked by chlorine , bromine , iodine , and sulfur . platinum is insoluble in hydrochloric and nitric acid , but dissolves in hot aqua regia (a mixture of nitric and hydrochloric acids), to form chloroplatinic acid , h ptcl . [ ]...
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