Questions tagged [solvents]

A liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute, resulting in a solution that is soluble in a certain volume of solvent at a specified temperature.

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69 views

In what solvents does ionic association occur?

When a ionic compound like $\ce{NaCl}$ dissolves, it doesn't always full dissociate due to ionic pairing. This is measured by the van 't Hoff factor. Now, this is what I'm looking at for my chem ...
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What are the best solvents to use for resin printers? [closed]

I have recently ordered a 3d printer that used UV sensitive resin. I was wondering what kind of solvents I could use in order to clean the excess resin and spills. I have searched on different groups ...
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Polar protic solvents with melting point between between 0 °C and 25 °C [closed]

Need a solvent for a freezing point depression experiment. Acetic acid is the only one I know of, but it is not ideal due to the low freezing point depression constant. Any suggestions?
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Powdered Dipropylene Glycol Monomethyl Ether [closed]

Entrepreneur here, background in electronics, so thank you in advance for your patience with me. Question: Is Dipropylene Glycol Monomethyl Ether available as a powder? If not, is there a powdered ...
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Carbon dioxide direct air capture - separating various air components by “distillation”?

While I consider myself a technical person my training and research is in computer science. We do not need to debate the need to remove $\ce{CO2}$ from the air. And what to do with it after capture is ...
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Pyridine: Protic or Aprotic

I know pyridine is a polar aprotic solvent (owing to a permamnent dipole generated), but if acidified it forms pyridinium cation. So, does it then function as polar protic solvent?
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Zinc salt with a very high relative aqueous solubility?

Zinc bromide, iodide, and chloride are highly soluble in water, both in absolute terms, and relative to other metals. I think however that there is a zinc compound with even higher relative aqueous ...
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Controlled burn with colored flames (Gender Reveal) [closed]

Is there a single solvent that can dissolve chemicals/elements that when burned, will produce the color of its respective chemical/element? If so, what chemical/element can be dissolved in this ...
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Choise of solvent for extraction

In the synthesis of (S)-Diphenyl(pyrrolidine-2yl)methanol, I need to extract the product using an organic solvent and water. Which organic solvent is the most suitable in this case? Ethyl acetate: I ...
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What is the mixing enthalpy of oxygen and water? [closed]

What I am actually interested in is making a fluid that can oxygenate humans through the skin to couteract ischaemia like gangrene and covid. So if the question has to be narrowed down it means ...
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Plasticisers and other impurities from polyethylene laboratory bottles?

Does polyethylene (PE), widely used for wash/squirt bottles in labs, contain soluble compounds such as plasticizers that can accumulate in organic solvents (e.g. alcohols, acetone) after prolonged ...
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How do you separate microcrystalline cellulose from amino acids in a powder mixture?

I am looking to separate out the microcrystalline cellulose that has been mixed in with amino acids in a powder mixture. I have tried suspending the powder mixture in water and then filtering out the ...
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Leaving group ability and solvent's effect

Regarding leaving groups and solvent effects (SN1 and SN2 reactions), I would like to ask some questions. As the nucleophilic character is also influenced by the solvents, there is some indication (to ...
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Will toluene vapors damage a mirror made from PETG?

I'm working on a project for work and trying to avoid using an acrylic mirror because I know that doesn't hold up well against toluene, but I'm wondering if a mirror made out of PETG would?
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Can a solvent be a solid?

Can a solvent be a solid? I do not think so. But is it possible for a solvent to be a solid?
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Determining solvent and solute [closed]

On which conditions does determining solvent depend on? 1. the higher boiling indicates the solvent the material with the higher concentration is the solvent the solvent is kept first in a pot. ...
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Can a solvent be a gas?

A solvent is an element which dissolves something, basically the solute. Normally, all the solvents we encounter are in liquid phase. So, I was wondering if there could be any solvent in a gaseous ...
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Does the amount of solvent interaction energy depend on the absolute gas phase energy?

I've been performing Gaussian 16 DFT optimization and single-point energy calculations on different conformers of a rather large organic molecule. My first series of calculations was without solvent ...
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Covering conformers in a molecular modelling; consider them as a static entity or work with modelling shifts as well?

I am currently working with a molecular docking project, examining potential affinities of a solvent on a protein in an assay to evaluate potential error margin. The solvent is cyclohexanol (referred ...
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How is carbon-halogen bond broken during Finkelstein reaction?

Finkelstein reaction is a halogen exchange reaction between haloalkane and a salt of a different halogenide: $$\ce{R−CH2−Cl + KI -> R−CH2−I + KCl}$$ From an answer of a previous question: As ...
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Why do azeotropes boil at constant temperature? [closed]

As given in the Wikipedia page, An azeotrope (/əˈziːəˌtroʊp/) or a constant boiling point mixture is a mixture of two or more liquids whose proportions cannot be altered or changed by simple ...
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Do aprotic solvents “slow down” SN1 reactions?

SOLVENT EFFECTS. Predict if using the polar, non-protic, solvent N,N-dimethylformamide (DMF, $\ce{Me2NC(=O)H})$ will speed up or slow down the following reactions and BRIEFLY justify your answers. a) ...
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Could metal hydride storage tanks for hydrogen store helium as well, given their repective atomic radii? [closed]

With atomic radii very similar, could helium dissolve into metallic foam about as well as hydrogen, thus making metal hydrite hydrogen tanks suitable for helium as well?
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Solubility of alcohols in non-polar solvents

The solubility of an alcohol in a non-polar solvent (like hexane) increases with size of the alcohol, as the non-polar chain increases. However, as the chain keeps increasing, will the solubility ...
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Decarboxylation of THCA during CO2 Extraction of Cannabis

We have a strange problem. We are performing CO2 extraction on cannabis and we are seeing considerable decarboxylation of THCA to THC. We have high quality temperature sensors at the heat exchangers, ...
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Suspension liquid for ferrofluid that makes it float [closed]

I am currently devising a project to create a kinetic sculpture, similar to Sachiko Kodama. Does anyone know any suspension liquids that when applied, the ferrofluid floats on top?
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What are common solvent removal methods?

In a laboratory setting, the most common solvent removal method is rotary vacuum distillation. This is something I have performed many times, starting in organic chemistry labs. However, I am ...
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Molarity of two solutions

Question: Two solutions of ethanol marked as X and Y are labeled as 25% ethanol by mass and 25% ethanol by volume respectively. If the density of solution Y is 0.789 g/mL and that of solution X is 0....
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Are Hansen solubility parameters available for inorganic salts or ionic molecules?

Are Hansen solubility parameters available for inorganic salts or ionic molecules (e.g. potassium oleate, potassium stearate, sodium dioctyl sulfosuccinate (AOT), sodium dodecyl benzol sulfonate (SDBS)...
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How will the dielectric constant of water change when ethyl acetate is added?

How will the dielectric constant of water change when ethyl acetate is added? The $\mathrm{p}K_a$ value of weak acids in aprotic solvents will be lower than in protic solvents because the dielectric ...
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Reaction of alpha-naphthol with benzyl iodide [duplicate]

In preparation for Olympiad, I faced this question: $\alpha$ naphthoxide ion (analogue to phenoxide ion) is reacted with benzyl iodide in two different mediums: $(i)$ DMSO (dimethyl sulfoxide) $(ii)$ ...
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Solvent for reaction mixture

I'm looking for some suitable solvent for ether cleavage of Guaiacol (o-Methoxyphenol) using aluminium triiodide ($\ce{AlI3}$) with $\ce{DMSO}$. The original paper calls for using hot acetonitrile as ...
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Acetone-resistant clear plastic

Is there a plastic that's clear, acetone resistant, and ideally sold in sheet stock that's ~1/8" or 1/4" thick? Both acrylic and polycarbonate are out, they turn cloudy on contact with acetone. I ...
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Will dissolving pure linseed oil in ethanol decrease its drying time?

I've looked at some material on the internet and it says that pure linseed oil can take months to dry completely unless a solvent is added, which decreases that time to a few days. I'm wary of ...
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Polymers which are miscible in oil

Can someone suggest me a list of polymers or some paper where I may find polymers that are soluble in oils like silicon oil, mustard oil, coconut oil, bean oil or petroleum ether, etc.?
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measuring the pKa of acetic acid in mixtures of water and methanol(changing percentage)

My goal is to measure the pKa of acetic acid in different mixtures of water and methanol, in which the proportion by weight of methanol will be changed. How can I measure the pH of this solution? Is ...
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Epoxide with solvent vs with water

The answer given is an epoxide. But is an epoxide stable at room temperature? And also epoxides tend to open in presence of water. Even if methyl alcohol is treated as a solvent, then too methyl ...
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How does acetone remove pencil marks?

In another question it was noted that acetone is a useful solvent for removing pencil marks from wood surfaces. (Source: https://woodworking.stackexchange.com/a/1870/763) I'm used to acetone being ...
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How to recover C18 column after prolonged exposure to phosphate buffer?

A colleague of mine who occasionally does HPLC in a biochemistry lab discovered that a C18 column was not properly flushed after the previous experiment. It appears that the column was stored for ...
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What can I use to remove print from hard surfaces?

I have a lot of profile products with the logotype of the company handing them out printed on them. In some situations I don't like to show these logos. However, it is stupid to bin working products ...
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Does clove oil/eugenol interact with nylon type plastics?

So I am aware that the eugenol in clove oil readily melts #6 type plastic (polystyrene). Polypropylene has a higher resistance, while HDPE type plastics seem to have the highest resistance. My main ...
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Why are alkali metal compounds like sodium hydride or sodium amide strong bases but weak nucleophiles?

I understand why compounds such as $\ce{NaH}$ or $\ce{NaNH2}$ are weak nucleophiles: as they aren't very soluble in organic solvents, they react only on the clusters' surface. But why are they strong ...
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Method to find out the amount of solvent replaced by another solvent

So I am performing a relatively simple coprecipitation experiment to synthesize ceramics. All my precursors are in aqueous solutions. But due to the high surface tension of water, drying the water is ...
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Can triethylene glycol be used to remove polypropylene from the die during the glycol bath process?

We use the glycol bath die cleaning process in order to clean our die which are used to extrude materials from PBT and PET. Can triethylene glycol be used in order to clean a die containing ...
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Can compounds dissolved in different miscible solvents react?

For example, can crystal iodine dissolved in ethanol react with sodium thiosulfate dissolved in water when mixed together?
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How many times should I run a solvent extration experiment through?

For advanced higher chemistry project, I am extracting cinnamaldehyde from cinnamon via first steam distillation and then solvent extraction using hexane. I'll be adding sodium chloride to the water/...
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Dissolving plastic resin without damaging aluminium surface

I have an aluminium surface covered with some plastic, which I intend to dissolve in order to clean the surface. On the note for the plastic I have applied, it says that it contains the following: 2-...
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Methylammonium lead(II) iodide perovskites in bulk form

I am trying to obtain $\ce{(MA)PbI3}$ as a bulk powder using lead(II) iodide and methylammonium iodide as precursors. I have not yet tried simply mixing the two in methanol/ethanol and removing the ...
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Polystyrene properties after dissolved by acetone

Polystyrene plastic can be dissolved in acetone. I would like to understand: If the dissolved polystyrene will take-out of the acetone and becomes solid again (after all the acetone evaporates), will ...
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Molybdenum ditelluride (MoTe2) single and few-layer liquid exfoliation? [closed]

In 2D nanomaterials like Transition Metal Dichalcogenides (TMD) exfoliated using liquid exfoliation methods, the solvent will play an important role in determining the final thickness and quality of ...

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