Давеча открываю Purification of laboratory chemicals 7th edition, со словами, мол товарищи студенты, сейчас я вас буду учить где искать инфу по очистке веществ
смотрю ссылкуEthyl iodide (iodoethane) [75-03-6] M 156.0, b 72.4o, d420 1.933, n15 1.5682, n25 1.5104. Drying the iodide
with P2O5 is unsatisfactory, and with CaCl2 it is incomplete. It is probably best to dry it with sodium wireand
distil [Hammond et al. J Am Chem Soc 82 704 1960]. Exposure of ethyl iodide to light leads to rapid
decomposition, with the liberation of iodine. Free iodine can be removed by shaking with several portions of
dilute aqueous Na2S2O3 (until the colour is discharged), followed by washing with water, drying (with CaCl2,
then sodium), and distilling. The distilled ethyl iodide is stored, over mercury, in a dark bottle away from direct
sunlight. Other purification procedures include passage through a 60cm column of silica gel, followed by
distillation, and treatment with elemental bromine, extraction of free halogen with Na2S2O3 solution, followed
by washing with water, drying and distilling. Free iodine and HI have also been removed by direct distillation
through a LeBel-Henninger column containing copper turnings. Purification by shaking with alkaline solutions,
and storage over silver, are reported to be unsatisfactory. [Beilstein 1 IV 163.]
- DOI:
http://dx.doi.org/10.1021/ja01488a051
Ethyl iodide, J. T. Baker analyzed reagent, was distilled from sodium wire before use.
вот думаю, я чего то не знаю, или уважаемые редакторы засунули в книжку методику опасную для жизни
P.S. сабж пока промыли тиосульфатом, стоит над CaCl2
