Prolonged contact between HCl and alkanes

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SUMMARY

The discussion confirms that hydrochloric acid (HCl) does not react with simple alkanes (C4-C12) over short timescales, resulting in a stable separation of HCl and hydrocarbons. The inquiry focuses on potential long-term reactions when stored in a closed polyethylene container and the effects of hydrocarbon layers on HCl outgassing rates. It is established that while no immediate reactions occur, nucleophilic substitutions may be expected for branched alkanes with more than three carbon atoms. The discussion emphasizes the stability of the system under specified conditions.

PREREQUISITES
  • Understanding of organic chemistry, specifically alkane properties
  • Knowledge of hydrochloric acid behavior in chemical reactions
  • Familiarity with nucleophilic substitution mechanisms
  • Experience with chemical storage protocols, particularly in polyethylene containers
NEXT STEPS
  • Research the long-term stability of HCl and alkane mixtures in closed containers
  • Investigate nucleophilic substitution reactions in branched alkanes
  • Examine the effects of hydrocarbon layers on gas outgassing rates
  • Study the chemical properties of polyethylene as a storage material for reactive substances
USEFUL FOR

Chemists, chemical engineers, and laboratory technicians involved in the study of acid-alkane interactions and chemical storage practices.

KarenRei
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I've verified that there is no obvious reaction between hydrochloric acid and simple alkanes (roughly C4-C12) over short timescales; they simply settle out with the heavier HCl on the bottom and the lighter hydrocarbons on the top, with no apparent heating or changes in general properties (as anticipated). However, are there any reactions on the scale of hours to weeks or more, if the solution were stored (closed polyethylene container, pressure release, not purged with an inert gas)? Nothing comes to mind, but I'm just wanting to make sure I'm not missing anything.

Also, would the expected rate of outgassing from the HCl be suppressed by having a layer of hydrocarbons on top of it (as water evaporation is hindered beneath a layer of oil), or would it remain pretty much unchanged?
 
Nucleophilic substitutions of branched members of families for n > 3 can be expected.