Which crystal dissolves in only hot water and recrystalize on cooling

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Discussion Overview

The discussion revolves around identifying a crystalline substance that is soluble in hot water but not in cold water, with a specific application in mind: binding glass beads. Participants explore potential materials and their properties, as well as alternative methods for achieving the desired outcome.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests information on crystalline chemicals that dissolve in hot water but not in cold water, expressing concern about availability and cost.
  • Another participant mentions that many substances exhibit the solubility behavior described but questions their effectiveness for binding glass beads.
  • A suggestion is made to consider using cyanoacrylate glues, commonly used by jewelers, as an alternative to a crystalline solution for binding materials.
  • A participant seeks clarification on the crystallization process, asking if the crystallized substance must remain mixed with water and whether it needs to be dissolved again later.
  • Concerns are raised about the potential variability in results when using different substances for the intended application.

Areas of Agreement / Disagreement

Participants do not reach a consensus on a specific crystalline substance that meets the criteria. Multiple viewpoints are presented regarding the feasibility of the proposed binding method and alternative solutions.

Contextual Notes

Participants express uncertainty about the specific properties required for the binding agent and the implications of crystallization in the presence of water.

Who May Find This Useful

Individuals interested in materials science, chemistry, or practical applications of crystalline substances in binding and adhesion may find this discussion relevant.

duke656
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Dear all!

Somebody, please tell me which crystal is soluble in hot water but not in cold water.

I am looking for some crystalline chemicals which are strong enough to bind something like glass beads. As I mentioned, it should be highly soluble in hot water (or change into liquid on high temperature) but should not be soluble in water in normal condition of temperature and pressure.

I am afraid I might be able to find such materials (or such material in reasonable price) or not.

Thanks in advance
Peace
 
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There are plenty of substances with solubility changing the way you describe, question is whether they will work gluing your marbles together.
 
You are probably going to have use some type of adhesive/glue.

Jewelers use cyanonacrylate glues (superglue) extensively to attach semi-precious gems to a bezel, for example. And this type of glue will attach to glass.

There are solvents/debonders for these glues - see Section 5 in the link below.

http://en.wikipedia.org/wiki/Cyanoacrylate
 
Borek and Jim thank you.

I am looking for something like Borek wrote. Could you share some idea Borek? Let me describe my problem. Say, I have a sack full of glass beads (0.5 mm). I would like to inject the chemical in the form of solution(dissolved in hot water). I want this solution to crystallize on cooling and bind the glass beads on sack. Is it possible?

Thank you once again.

Peace
 
In most cases, if it crystallizes, it will be still mixed with water. Is that what you want?

Does it have to be dissolved in water? Isn't it enough that it solidifies?

Do you want to be able to dissolve it later?

I don't have any particular substances on mind, but there are plenty of reasons that can make the result different from what you want to achieve.
 

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