Talk:Solvent

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This article covers most of the issues...but it is glaringly without any references whatsoever. Further, it contains some misleading oversimplifications. Unfortunately, the authors missed key safety issues with respect to their treatment of peroxides. The authors would benefit from consulting & understanding accepted scientific references. Lastly, the links are again without reference and a few of the tables are poorly put together and misleading.

For solubility data, why is the temperature not given. Clearly, this affects solubility and therefore should be quoted. (question made by 80.5.160.8)

Actually, we don't have solubility data on this page :-) Cacycle 16:51, 5 Feb 2005 (UTC)

Contents

[edit] Isn't dichloromethane polar?

Enough said, please discuss, thanks. —The preceding unsigned comment was added by 138.16.27.151 (talk) 22:10, 10 February 2007 (UTC).

Applying the "like-dissolves-like" principle, since dichloromethane is completely immiscible with water while miscible with most non-polar organic solvents, dichloromethane is definitely non-polar. On a polarity scale dichloromethane (CH2Cl2) is more polar than tetrachloromethane (CCl4) but less polar than chloroform (CHCl3). However all three solvents are immiscible with water and therefore all are consider non-polar. Boghog2 21:57, 5 May 2007 (UTC)

[edit] Solvent is a liquid?

Why are we saying "A solvent is a liquid" here? The solution page clearly states that gases may be dissolved in themselves, and why not gases, liquids and solids into solids?

[edit] "Natural" solvents?

I can't find information here on "natural" solvents like Pine-Sol or Goo Gone. Any idea what they are chemically and why they can dissolve things that usually require nasty nonpolar solvents? —BenFrantzDale 19:40, 22 February 2006 (UTC)

[edit] Merge

See Talk:Solution#Merging Solution with Soluble and Solvent. --Unsigned comment added 22:45, 11 May 2006 by User:Black and White. Edited by User:Centrx on 24 May 2006.

[edit] Definition through itself

Isn't saying solvent dissolves defining it with the word itself. May-be merging with Solution will be a good idea, but if they don't get merged, I think the first sentence needs something else instead of dissolves.80.235.71.49 16:13, 6 September 2007 (UTC)

hey can a solvent dissolve a plasma? —Preceding unsigned comment added by Thunder god 15 (talk • contribs) 09:24, 11 October 2007 (UTC)

[edit] Couple of points - Inert/recrystalisation

Although picky I think the following sentance needs re-wording

Solvents should therefore not react chemically with the dissolved compounds — they have to be inert. I can think of several instances in which solvents also act as reagents, most notably the birch reduction (both ammonia and ethanol), formation of nucleophiles such as alkoxides, to name but a few.

An important point which should also be noted (linked) is the process of recrystalisation.Dant1t 23:17, 22 October 2007 (UTC)dant1t

[edit] NO REFERENCE FOR PEROXIDE FORMATION

Please provide better mechanism including reference. Formation of peroxides is a critical safety issue. Specifically, your mechanism does not rationalize formation the peroxide. The oxygen radical needs to form a bond with the oxygen atom already present on THF, not on the carbon, right? How is the peroxide formed?

[edit] POLAR IN THIS CASE IS NOT NECESSARILY HYDROPHILIC

POLARITY scale also depends on the kind of chemistry being done. Dichlormethane, Ethyl acetate, diethyl ether, Chloroform and others are polar for uses in synthetic organic chemistry and DO NOT DISSOLVE IN WATER. Your statement is an incorrect oversipmlification. Polarity of solvents as you say later on the paragraph has to do with the dipole of the molecule and the solvent's ability to dissolve the solute in question and NOT IF THEY DISSOLVE IN Water. Lowry & Richardson, Mechanism and Theory in Organic Chemistry, 3rd Ed. Harper Collins Publishers (1987) p. 177 discusses and suggests nonpolar solvents have dielectric constant of less than approximately 15.


YOU REALLY NEED REFERENCES. —Preceding unsigned comment added by 141.214.17.5 (talk) 20:19, 29 January 2008 (UTC)

Actually, DCM, EA, ether, chloroform are non-polar solvents. Polar solvents really, should start from acetone, dmso, ethanol, methanol onward. These are the solvents of polarity ~ 0.4 and above. And yes, I am a synthetic chemist. --Rifleman 82 (talk) 01:38, 30 January 2008 (UTC)

Again, we need accepted peer reviewed references not the opinion of an annonymous editor purporting to be a chemist.


Plus, hey synthetic chemist, if you have time, could you provide the mechanism and reference for peroxide formation in THF. THanks. —Preceding unsigned comment added by 141.214.17.5 (talk) 21:38, 13 February 2008 (UTC)