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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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37 views

A kind of universal solvent? [closed]

Is there solvent which can dissolved every known material/compound/element weather If it reacts with it and even may dissolve a very little (but some significant ) amount. Any kind of acids/base/...
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1answer
19 views

Do substances dissolved in a solvent oxidise? [closed]

If a substance is dissolved in a solvent does it still oxidise? Does it depend on weather the solvent can dissolve oxygen?
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1answer
37 views

Why is fluoride the most nucleophilic halide in aprotic solvents? [duplicate]

I am confused on the topic of electronegative nucleophiles, and polar aprotic solvents. From my understanding, the more electronegative a nucleophile is, the weaker of a nucleophile it will be, ...
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1answer
17 views

Suitable safe cleaning solution for aliphatic urethane

I am looking for a suitable cleaning solution for a sprayed on coating that is an acrylic aliphatic urethane. My end goal would ideally be something that can neutralize rust, whiten and brighten the ...
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0answers
17 views

Why do solvents having high dielectric constant tend to dissociate compounds into ions?

I know that dielectric constant is calculated by finding out the ratio between the capacitance of a capacitor with the given dielectric and an ideal capacitor. But how does this information helps us ...
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1answer
37 views

Acids using different solvents [closed]

Many polar protic solvents exist and ionic compounds are able to dissolve inside these substances for the same reason as water. So, theoretically, if a substance were to steal a $H^+$ ion from a polar ...
2
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1answer
75 views

Why is hexane called skellysolve-B

https://pubchem.ncbi.nlm.nih.gov/compound/hexane Another name for hexane is skellysolve-B, is that just to be silly?
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1answer
44 views

What are solvents that can dissolve sebum that is safe for topical use? [closed]

I do not know much about these properties and I need some feedback regarding these. Sebum is a semi-fluid that in humans contains a mixture of triglyerides, cholesterol, ester waxes, and squalene. 57....
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1answer
52 views

Are there any fluids which are both viscous and volatile? [closed]

I'm looking for a viscous fluid which will evaporate (completely) rather quickly. If propylene glycol evaporated like acetone, that would be the dream ticket, but neither the viscosity nor the ...
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0answers
14 views

Efficient ways to make perovskite solar cell crystals

I'm a high schooler involved in a research in which we aim to grow perovskite crystals in microgravity. I've recently come across this article in which they explain how to grow better perovskite ...
2
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0answers
24 views

Deperoxidation of ethers via alumina: what happens?

I was reading about the procedures for the removal of peroxides from ethereal solvents, and a procedure which seems to have survived to our days is filtration through a column of "activated alumina" (...
1
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1answer
387 views

Why Benzene is a good solvent even while it is not polar [closed]

Consider for a moment, ether, THF, benzene and hexane. Why is the solubility of many organics in these solvents in the following order THF > ether / benzene > hexane What makes benzene a good ...
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1answer
47 views

How can I prevent the effervescence of a solvent during evaporation? [closed]

How can I prevent the effervescence of a solvent like petroleum ether when I evaporate it on a water bath?
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0answers
39 views

Explain basic nature of aniline relative to ammonia in solvent phase

It's quite common to explain the fact that aniline is less basic than ammonia using resonance. But, I read in a book[1] that solvation effects are also the reason. The explanation is given in terms of ...
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0answers
30 views

Solvent resistant coating?

I want to make a vessel for a dry ice bath (with either acetone or methanol--the two cheapest liquids I can find that stay liquid at -80C). I know I could just insulate a metal vessel, but what I ...
8
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3answers
112 views

What is the proof of complete ionic dissociation in water?

Is there any way to prove that ionic compounds, for instance $\ce{NaCl}$, completely dissociate into singular $\ce{Na+}$ and $\ce{Cl-}$ ions within water by hard experimental evidence? Besides ...
8
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0answers
122 views

Cobalt Chloride in various solvent/water mixtures - tested

In a recent post the solvatochromic behaviour of cobalt chloride in acetone was discussed. There were some ideas how the acetone might influence the ratio between the blue $\ce{[CoCl4]^2-}$ and the ...
3
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1answer
177 views

Why any non polar compounds dissolve in nonpolar substance like Benzene what is the reason behind it? [duplicate]

In case of ionic solvent the ionic solute dissolve in it because due to polar nature of water it break the bond between the ions through hydration energy and the ionic solvent dissolve in it. So I ...
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0answers
143 views

pKa Values and the Leveling Effect

I've heard that the leveling effect happens if the pKa of the acid is less than water, but then I've also heard it will happen if the acid is too strong (stronger than Hydronium). Is this correct? Are ...
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1answer
59 views

what would happen if someone smell just a little chloroform? [closed]

I'm new in labratoary and a few days ago I smelled chloroform just for a second, out of curiosity. The next day I became very sick with symptoms like nausea, vomiting, fatigue and pain in my muscles. ...
3
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0answers
71 views

Nucleophilicity of halides in solvents [duplicate]

I have studied that as electronegativity increases nucleophilicity decreases. But in the aprotic solvent the order of nucleophilicty is: $$\ce{F- > Cl- > Br- > I-}$$ but how is this possible ...
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1answer
1k views

Will vegetable oil and kerosene mix?

Is it possible to mix vegetable oil with kerosene? If not, what other solvents can be used to reduce the viscosity of cooking oil/vegetable oil.
3
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0answers
132 views

is syringaldazine soluble in water?

Would it be better to use water or ethanol as a solvent for syringaldazine? Why? Would water interfere with the oxidation of syringaldazine if laccase enzyme was added?
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0answers
142 views

Filtering dry magnesium sulfate from anhydrous acetone

I've got some anhydrous acetone which I store over magnesium sulfate to prevent the accumulation of water. Even slight movements make the still-dry MgSO particles quickly disperse throughout the ...
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1answer
138 views

How can I solvent exchange from water to alcohol?

Given an aqueous colloidal solution, is there a way to transfer the colloidal particles into an alcohol (assuming the colloidal particles are also stable in the alcohol)? I see in the literature that ...
4
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0answers
73 views

What is a good solvent for pentacene?

I am doing an experiment with pentacene molecule ($\ce{C22H14}$). I want to clean my sample reservoir after using it. But I show in some literature that it is slightly soluble in organic solvent. ...
4
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2answers
464 views

What is the function of nitrobenzene as a solvent in Friedel Crafts alkylation reaction?

I would like to know what is the function of nitrobenzene as a solvent in Friedel Crafts alkylation reaction. Answer to this question suggests that Friedel Crafts reaction is not possible with ...
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1answer
132 views

How do quaternary ammonium salts catalyse SN2 reactions?

I am asked to identify the "best catalyst" for the reaction: $$\ce{CH3(CH2)8CH2Br->[\ce{KCN}][\text{benzene}]CH3(CH2)8CH2CN}$$ The options are (A) benzyl chloride (B) aniline (C) N,N,N-...
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0answers
35 views

Solvent for ABS that won't harm cured urethane or epoxy resin?

Is there a commonly available solvent that will dissolve ABS plastic but will not harm fully cured clear cast resin? I understand "clear cast resin" is ambiguous, most products are listed either as ...
2
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2answers
55 views

How to make dichloromethane human-friendly and safe for storage?

I use dichloromethane to polish 3D printed object as postprocessing step. Most of it is stored in darkened glass on my balcony (now at $\pu{-15^\circ C}$). What chemical reactions I need to make it ...
0
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1answer
75 views

Is it absolutely necessary to use centrifuge to separate ethylene glycol from precipitate?

I've been trying to synthesize intermetallics of $\ce{XY}$ type using transition metal salts and main group element salts. For my system, EG, DEG, and TEG are good solvents. However, because of them ...
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0answers
54 views

How to determine crown ether cavity size? [closed]

I want to determine the cavity radius/ dia of crown ether. Which technique should I follow?
4
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2answers
683 views

Is polylactic acid (PLA) soluble in ethylacetate?

I'm searching for polylactic acid (that used in 3D printing) solvent, that is less toxic. It's used to postprocessing to polish object. Dichloroethane is toxic, acetone and dichloromethane less, but ...
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1answer
6k views

Halogenation of Phenol [closed]

Why does only one $\ce{Br+}$ ion get generated in a non-polar solvent (such as $\ce{CS2}$), while more $\ce{Br+}$ ions are generated in aqueous or polar solvent (such as $\ce{H2O}$)?
4
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1answer
198 views

Using Nanodrop for UV/Vis analysis of compounds at limited amounts [closed]

I am no chemist, but a biologist who knows some biochemistry. I have some natural extracts at limited quantity, which I have been evaluating using mainly GC-MS. These extracts are rich in liquid ...
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1answer
37 views

How to evenly mix NaCl and Lactose

Q: You have 10 g NaCl (s) and 90 g Lactose (s) (both easily soluble in water.) You want to achieve a 100 g mixture of these two compounds in solid form where they are completely evenly mixed. (A 1 mg ...
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1answer
380 views

How to choose alcohol solvent for organic extraction?

Assuming I have an organic substance that is known to be "soluble in alcohol" (e.g. capsaicin) I want to extract, which alcohol should/can I use? I know that both ethanol and methanol are commonly ...
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0answers
267 views

Orange Melting / Dissolving Plastic Knife?

So I was just cutting the peel of an orange with a plastic knife and when I went to wipe of the juice from the knife with a paper towel I noticed that a black residue came off the knife where the ...
4
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1answer
1k views

For what reasons, is isopropyl alcohol widely used as a cleaning solvent?

I have worked in electronics and aeronautics industry 30 years ago, and I have always wondered, what were the specific properties of isopropyl alcohol, which make it used instead of other alcohols ...
5
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1answer
386 views

Isopropanol in contact lens solution plastic bottle

I have a rather large plastic bottle of isopropanol ($99.7\%$), and I wanted to store some of it in a smaller, more handy container. I have two empty plastic bottles from contact lens solution that I ...
3
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1answer
335 views

Questions regarding the preparation and recrystallisation of methyl 3-nitrobenzoate

I have a procedure for the synthesis of methyl 3-nitrobenzoate (via nitration of methyl benzoate): Weigh 2.0 g of methyl benzoate into a dry 50 cm3 conical flask. Add 4 cm3 of concentrated ...
3
votes
1answer
958 views

Is there a substance that will eat through and completely dissolve carbon but not damage engine cylinder, piston nor rings?

I'm afraid that when I was instructed to be specific in the title of my post, I kind of said it all... Here is the issue: I have a 2001 Isuzu Rodeo. It has been going through excessive amounts of oil....
3
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0answers
216 views

What pH indicators are commonly used for non-polar medium?

Compounds, commonly used as pH-indicators, are soluble in aqueous media and polar solvents (DMSO, DMF, NMP etc.) and are functional pretty much across all these solvents. However, practically none ...
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1answer
5k views

How to remove formaldehyde (smell) from clothes/jeans?

Bought several jeans, then to discover they have a really nauseating smell, that is not removed by washing. Reckon it's formaldehyde, from what I can read. Anyway, assuming you have jeans with ...
3
votes
1answer
38 views

Is supercriticality dependent on partial presssure, or total pressure?

Supercritical CO2 is commonly used as a solvent in organic chemistry (notably in industrial processes like decaffeination). I presume that in such cases, the CO2 is typically pure, or very close to it....
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1answer
70 views

Synthesize camphene

How does one easily synthesize camphene in the modern day? The old 1902 patent says to combine ammonia and pinene hydrochloride in an autoclave at 210-220C for 20 hours. Would alpha-pinene work with ...
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0answers
33 views

what solvent should i use to disinfect leaves without destroying other chemical properties

i am making a Mimosa pudica's antifungal study claims for my project at school. therefore making a product out of it. And i was about to extract the plant's chemical properties but first i dont know ...
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1answer
85 views

How to calculate he equilibrium constant change for acid-base reactions in a different solvent?

So we know that $K_\mathrm w$ is $10^{-14}$. But what if I am working with non-aqueous systems? Suppose I were to add LDA to liquid ammonia, or dissolve HCl in concentrated sulfuric acid. How would I ...
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1answer
1k views

Why is enol content higher in non-polar solvents?

Apparently, for keto-enol tautomerism, the enol content of a given carbonyl compound increases when in a non-polar solvent. What is the reason for this?
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4answers
7k views

How to dissolve PLA (polylactic acid)?

I'm a maker and I've been interested in 3d printing for years. I have found a technique for dissolve the PLA supports in a model printed in 3D in HIPS I have printed the model in HIPS and the ...