Talk:Solvent

message: Ethyl acetate in the none polars in the second, and the polar aprotics in the first  —Preceding unsigned comment added by 82.24.47.178 (talk) 10:10, 14 August 2010 (UTC)
replies: text: Fixed. Thank you. Materialscientist (talk) 10:35, 14 August 2010 (UTC)
thread_title: Solvent table has another error?

message: In the solvent table, 1,4-dioxane is listed as having a nonzero dipole moment, but from the symmetry of the molecule one would expect a zero dipole moment.  I realize this is may be a subtle question for flexible molecules like 1,4-dioxane that can have a nonzero dipole moment some conformations (in this case the less preferred chair conformation) but not others. The 1967 National Bureau of Standards tabulation  (page 28) lists 1,4-dioxane as having no dipole moment because of symmetry, but on the same page the dipole moment of 2,3-butanedione is listed as zero but questionable, due to the possible effects of an unsymmetric gauche conformation.  Pending further information, I have changed the dipole moment of 1,4-dioxane in the solvent table to zero.  — Preceding unsigned comment added by CharlesHBennett (talk • contribs) 21:13, 26 July 2012 (UTC)
thread_title: Dipole moment of 1,4-dioxane in solvent table

message: On the first one, it's listing DCM as a none polar, and the second lists it as a polar.
:Thank you. Fixed (it is somewhat polar). Materialscientist (talk) 22:30, 23 June 2010 (UTC)
thread_title:  Solvent table has an error? 

message: Some of the Hansen solubility parameter data is not in agreement with original sources.  The example with finding substitute mixtures for chloroform is not valid with the current values of the parameters of dioxane.  Hansen's book has the values 19.0,1.8,7.4  for the three parameters D,P,H.  A much better fit is with a mixture of toluene and tetrahydrofuran.  Perhaps there was a mixup somewhere; this is important because there are good reasons for not using chloroform (for one thing, it spontaneously decomposes to form phosgene, a very poisonous material)  In addition, both dioxane and tetrahydrafuran are problematic in that they form explosive peroxides on storage. —Preceding unsigned comment added by 97.113.108.124 (talk) 05:43, 19 June 2010 (UTC)
thread_title:  Some Hansen data incorrect 

message: 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)
thread_title:  "Natural" solvents? 

message: 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)
thread_title: Definition through itself

message: 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)
thread_title:  Couple of points - Inert/recrystalisation 

message: 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? — Preceding unsigned comment added by 141.214.17.5 (talk) 20:02, 29 May 2008 (UTC)
thread_title: No reference for peroxide formation

message: 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 oversimplification. 
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 May 2008 (UTC)
thread_title: Polar in this case is not necessarily hydrophilic

message: Is there any Chemical element that is used as a solvent? I mean something like a particular substance dissolves in say Mercury (element)) and therefore Mercury is used as a solvent for commercial/research work. manya (talk) 04:39, 9 December 2008 (UTC)
replies: text: Mercury solutions are called amalgams. Mercury is used to dissolve sodium (mercury cell process) and gold (an ancient gold refining method). --Vuo (talk) 17:58, 5 January 2009 (UTC)
thread_title:  elements as solvents? 

message: such as dimethyl isosorbide, dimethyl sulfoxide (dmso), glycofurol (glycofurol 75), ethyl lactate, solketal, n methyl pyrolidonone. Cinnamon colbert (talk) 14:12, 30 July 2009 (UTC)
thread_title: food, cosmetic industry solvents

message: We need to fix the 2nd person (you) tone found throughout. I don't have time. Earendil56 (talk) 22:20, 24 October 2011 (UTC)
thread_title:  Fix the 2nd person? 

message: Is an organic solvent just a solvent that is an organic compound? Do they tend to have any interesting properties that distinguish them from solvents in general -- for example, a relationship with polarity? 
Perhaps the category is not very fundamental, but the collocation "organic solvent" is found often in the external world, and the term redirects here, so it would be nice to have a tiny section or definition devoted to organic solvents as such.
For example, if "most" solvents besides water are organic solvents, as I read on Yahoo, then perhaps this should be mentioned in the first paragraph of the article, before getting into the uses of organic solvents. I don't have the knowledge to assert this myself. 
At the end of the article we find the following remark, added as a kind of afterthought:
Solvent systems exist outside the realm of ordinary organic solvents: Supercritical fluids, ionic liquids and deep eutectic solvents.
Again, this hints at something implicitly known to chemists but not set forth in the article: most solvents are organic. It also suggests that the article has not mentioned these kinds of solvents, or any solvents besides organic. This is disappointing to the reader, since the title of the article is "solvents", and also is not quite true. 84.227.242.182 (talk) 18:17, 14 September 2014 (UTC)
thread_title:  Organic solvent 

message: "The dynamic economic development in emerging markets like China, India, Brazil, or Russia will especially continue to boost demand for solvents."
This reminds me of stock blog hype in the summer of 2008 -- isn't this a bit dated, or perhaps too specific in its reference to be on-topic here? 89.217.20.9 (talk) 21:41, 14 September 2014 (UTC)
replies: text: A similar passage still existed until I removed it a minute ago. At most, only part of it was cited, and all of it appeared to be based on years-old publications making predictions that by now are either fulfilled or not. We definitely don't need marketting hype here. DMacks (talk) 15:52, 21 January 2016 (UTC)
thread_title:  BRICs

message: Substituted at 06:29, 30 April 2016 (UTC)
thread_title: Assessment comment

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thread_title:  External links modified (January 2018)