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Dissolving material

Any material that dissolves in water after a particular period of time (eg:3000 litres) .. or any other way to achieve it..?

Topic by ursurya000007    |  last reply

Dissolving Epoxy Answered

I have a project where I have an antique electronic part that is sealed with epoxy. Is there any way of dissolving the epoxy in order to view the original parts? This is so I can construct a replacement part.?

Question by Foxtrot70    |  last reply

What dissolves plant matter? Answered

Hi, Thanks for stopping by. I do a lot of demo's for my family's kids to show how stuff works - it seems to work as they remember a lot, and they ask for more. I want to show how tough plant life is, and I have a range of acids to show how plants do not dissolve easily (to do with the cellulose) - does anyone know what would dissolve plant matter, please? Many thanks.

Question by kevinhannan    |  last reply

What dissolves plant matter? Answered

Hi, Thanks for stopping by. I do a lot of demo's for my family's kids to show how stuff works - it seems to work as they remember a lot, and they ask for more. I want to show how tough plant life is, and I have a range of acids to show how plants do not dissolve easily (to do with the cellulose) - does anyone know what would dissolve plant matter, please? Many thanks.

Question by kevinhannan    |  last reply

best solid material that dissolves in water? Answered

I need a solid material I can easy get, it should stay solid when exposed to air, for long periods, and when it comes into water, it should dissolve. What material would be the best choice? edit: It should stay firm for about 5 years. When in water, it needs to dissolve as quick as possible.

Question by merijnvw    |  last reply

Solid plastic like material that dissolves in water after a week?

I am looking for a material that is hard like delrin or solid plastic, about 2-3mm thick.  It should stay rigid / stiff for a week, then it should slowly dissolve and disappear.  Does something like this exist? 

Question by henrik242    |  last reply

A material or molding substance that can dissolve in water not to fast but decently quick an floats in water

I am trying to build a prototype dnt want to share to much about it hoping to sell it an patent it n e ways i am trying to figure out a material where i can mold it like clay an make like  obkects out of it an at the same time if i where to pour water on it the item would dissolve at the same time float so say i put a snow ball in the tub an it was packed well an it floats an i want to shoot it with a water gun a good water gun an made it dissolve thats what im trying to get at basically with the material i need it floatable an non harmful an dissolves an can be molded please help

Question by JamesDRobbins  

Removing silicon from pcbs (leave the copper patterns)

How can you dissolve the silicon (and possibly solder) off of a PCB to leave the copper traces? Thanks

Topic by LinuxH4x0r    |  last reply

Trying to seal a system containing ethanol.

I'm putting the pipe system together for my solar thing, which needs to contain hot ethanol, not under significant pressure. What kind of sealant / adhesive can I use that won't dissolve in the ethanol? I'm gluing together mostly plastics like PVC, but also steel and aluminium.

Topic by SolarFlower_org    |  last reply

How to seal a system containing ethanol, but low friction?

Still working on my solar device (in Copenhagen now), and it's coming along fairly nicely. Should hopefully have a full instructable in a couple of weeks. However, I'm having problems at the moment trying to keep the thing water tight, where the axle leaves the system, taking out the rotational motion. I'm using the bearing housing from an old bike wheel (photos to come) and I've got it sealed well where it's attached to wall of the container, but the ethanol is flowing pretty freely through the bearings themselves. I need it not to. I could use something like an O ring to seal the axle, but friction is a big issue. I wanted to pack the whole axle and bearing housing with grease, but grease dissolves in ethanol. Solutions? Is there anything grease like which isn't soluble in alcohol? Salt, maybe? Cheers all. (Nearly there...)

Topic by SolarFlower_org    |  last reply

Will hot ethanol eat through flame hardened PVA glue?

I'm still working on this solar thing and it's coming along pretty well, am starting in on the final piecing of things together. One old problem that has resurfaced tho is the sealing of the boiler. I was using a metal epoxy similar to Quicksteel, which handled the ethanol ok but is going soft and cracking off, I think due to the regular heating > 80C. So I'm once again looking around for other options. What I'm trying now is wood glue, which I assume is just PVA, run over a flame so that it becomes hard. It seals the ends of the flattened copper pipe well, and doesn't immediately fail on contact with ethanol. Is it likely to hold up, do you think? I'm kind of assuming it won't, but it'd be great if it did. cheers Daniel.

Topic by SolarFlower_org    |  last reply

Will an inked paper boat dissolve in water?

For one fun activity with kids we wrote letters, made paper boats of them and let them into the lake. We didn’t have time to take them out, they sank somewhere not far away from the point where they started off. So my question is how long will it take for that ink to dissolve (yes, I don’t really want anyone read that stuff:)) and those paper boats to dissolve/tear apart?

Question by KiraKiri    |  last reply

Dissolve Aluminum - Golden Book Chemistry

In the Golden Book of Chemistry, page 64, there're instructions for dissolving aluminum. The book states that HYDROGEN is released when aluminum strips are dissolved in hydrochloric acid and ALUMINUM CHLORIDE is formed. That's about all we get from the book concerning that particular experiment. Just wondering if this is correct, how to test it, what it should look like and what may we [the kids and myself] may do with it if it's actually aluminum chloride. It's a good book, but quite a bit of theory's lacking. Thanks all.

Topic by Sovereignty    |  last reply

How to dissolve wood glue of a brush? Answered

After I used a brush to apply Gorilla© wood glue I forgot to clean it and, I need to know if there is a solvent that can remove the wood glue of the brush.

Question by blkhawk    |  last reply

HELP !! how can i identefy an unknown metal (I have less than 24h)?

For chemestry I have to Identify an unknown metal by causing a GAS REACTION, it can be any metal ! - I can't incinerate the metal - I can't mix the metal with water - I can't measure the volume of the metal There must be a gas reaction !! I probably have to use some kind of acid and measure the mass before and after the reaction i think. PLZ HELP ME !! i have to know it in less then 24 houres ! it is very important for my grades.

Question by anres321    |  last reply

What are the solid materials that dissolve in a liquid substance?

Other than sugar and salt I need 2 examples 

Question by Emma-science    |  last reply

Would oil dissolve a rubber radiator hose? Answered

What's worse when slipping on heater hoses, a light coating of dishwashing soap or oil? What would you use? (I'm thinking silicone, coolant wasn't slippery enough for me)?

Question by DELETED_Phill    |  last reply

Remove copper from a PCB without dissolving it?

I have a bunch of old PCBs laying around from various electronic projects, things I took apart and re-purposed, etc...Seeing as copper is roughly $0.25 per ounce, I would like to remove the copper from these PCBs, and sell it to a local coin shop that buys various scrap metals. I plan on sanding the solder mask off first, but after that, I don't know how to remove the copper from the fiberglass. Maybe just electroplate it onto another piece of copper? Please give me suggestions, thanks!

Topic by metrogdor22    |  last reply

How to forecast Sodium Chloride can dissolve in water?Why? Answered

How to forecast Sodium Chloride can dissolve in water?Why?

Question by james34602    |  last reply

How much copper will 1lb of Ferric Chloride dissolve?

How much copper will 1lb of Anhydrous Ferric Chloride dissolve? How much water does the Ferric Chloride need to be dissolved in? Thanks

Question by arthur92710    |  last reply

Aluminum from aluminum hydroxide?

I have some aluminum hydroxide and I have been trying to find a way to strip the Al(OH)3 of it's hydroxide ions to form an aluminum precipitate. It's nonsoluble so a reaction in an aqueous solution does not seem to be an option, also considering that the only other more reactive metals than it would ignite upon contact with water anyhow. Does anyone have any ideas how to accomplish this?

Question by pyrorower    |  last reply

Building material that dissolves in water and same time flame retardant?

Hello everyone! I have a problem that I've been working on for a while.  I need to instal a mobile unit in the sprinklered mall. The Fire Marshall told us that the mobile unit has to be installed with sprinklers or with a ceiling that dissolves in the water AND flame retardant in the same time. Installing sprinklers is not an option. Also, the ceiling has to be about 8x20. I need to know if it's possible and if yes, what materials would work?  I would really appreciate any help! And If it's possible even only in theory, please let me know. 

Question by oafanasiev    |  last reply



Question by CHARGEUUP    |  last reply

Sulphiric(sp?) acid to etch pcbs? Answered

I am just wondering wether it is possible to etch pcbs with sulfiric acid because I heard it can dissolve copper. But i'm wondering if it will just dissolve the copper or if the entire pcb will melt. ~josh1324

Question by josh1324    |  last reply

How deep can you etch brass?

How deep can one etch brass (using the toner transfar method, like when making PCB's) before the acid will dissolve the brass under the toner? Like at the point it will dissolve the brass by going around the toner and coming up from underneith?

Question by guyfrom7up    |  last reply

What can I use to dissolve inkjet ink that won't harm mylar? Answered

I have a stock of large sheets of translucent mylar that I want to use as tracing medium. The trouble is that I got them from an engineering shop, so they have plans printed on them. I've had some success "erasing" the drawings using either alcohol hand sanitizer or acetone, but both require some elbow grease and some kind of abrasive, which leaves the surface mottled. Is there a solvent that will dissolve the ink and leave the surface of the mylar more-or-less undamaged? My research suggests that the ink was laid down by an inkjet printer, though I can't be entirely certain.

Question by yoyology    |  last reply

What material can be used as a binder that would slowly dissolve in sea water?

There is an on-going problem in the fishing industry concerning bait in the crab fishery. Bait is becoming almost as expensive as crab. At the same time, there are by products in the seafood industry that are just being wasted that would fulfill the required needs if it could be combined with a sea water soluble material that could be adjusted to dissolve within set periods of time such as 3, 5 or 7 days. Anyone have any ideas? No soap or any material that would disturb the natural balance of the environment would work. 

Question by Oregonbythesea    |  last reply

Propane in air compressor hose

Does anyone know how a regular (150psi rated) air hose will stand up to propane? I'm curious as to whether it would dissolve it.

Topic by Hegemone    |  last reply

hydrogen peroxide

I am wanting to make some sulphuric acid because it is on of the most useful acids around and i have ran into a problem. after you burn sulphur to create sulphur dioxide you then need a catalyst to form sulphur trioxide and then dissolve in water. which catalysts could be used and could you just let the sulphur dioxide dissolve in hydrogen peroxide (so2-----so3------h20--------h2so4 or so2 ------ h202---------h2so4).if this would work how could you get a large enough concentration of hydrogen peroxide?

Topic by dellboy    |  last reply

Made a batch of the gummies

Made a batch of the gummies . Put them in cellophane bags to put in pinata's. They sweated and started to dissolve, they were also VERY chewy... what am I doing wrong...? Any hints..?

Question by tigerjeff    |  last reply

Un-Join A Group

I remember that there used to be an un-join group button. It's not there any more, and my problem-solving-skill-dissolved self can't seem to figure out how to leave a group. Anyone know?

Topic by puffyfluff    |  last reply

How can I heat gasoline, with out it igniting?

I want to dissolve plastic into the gas, so i need to heat it. How could i do this without buying anything???

Topic by DELTAWOLF05    |  last reply

How to build the EnvDAQ cards?

I got the instructions to build the pH and DO sensor accessory to the EnvDAQ circuit. But how to build the EnvDAQ? Also, a supporting code would be highly appreciated. Thanks in advance for your help.

Question by chinmayeeraj  


I have a bag of dried cayenne peppers lying around here somewhere. Is there any way i can extract the oils to make a kind of spicy fire liquid? What solvents (isopropyl? denatured alcohol? acetone?) would dissolve the oils? Thanks.

Topic by John Smith    |  last reply

How do I remove vinyl tile adhesive?

I am removing some cheap vinyl tile squares, but it leaves adhesive on the underneath floor, which I want to keep.  What can I use to dissolve, remove or clean the adhesive?

Question by bodie1    |  last reply

Giant rat-eating plant discovered

O_O Check out this giant pitcher plant from the Phillipines. You've heard of venus flytraps? Regular pitcher plants? Small fry compared to this behemoth. Nepenthes attenboroughii (named after Sir David Attenborough) is way bigger than those relatively tame plants, and dissolves its prey with "acid-like enzymes". From the article: "The plant is among the largest of all pitchers and is believed to be the largest meat-eating shrub, dissolving rats with acid-like enzymes.">Whimper<Call me cowardly, but I get the willies when we start discovering plants that can eat small rodents...who knows what else is out there in the as-yet-unexplored areas of the jungle...Link

Topic by Lithium Rain    |  last reply

How can I extract Peppermint (or another mint plant)'s oil?

I hear oil from algae is extracted by drying it, then soaking it in alcohol to dissolve the extract, then straining it and evaporating the alcohol. I might start experimenting with that, but any suggestions?

Question by sherlocksbumstead    |  last reply

How would I grow a giant crystal formation?

I have a 3 foot height by 1.5 foot width rectangular container of which i intend to grow a crystal formation in.  Does any one know how? That wont be toxic and wont dissolve?

Question by puregoldner    |  last reply

care to check out my first instructable? I went for quality.

Hey, I was wondering if everyone could check out my first ever instructable, found hereit's about dissolving an egg shell using only basic household items......check it out, and please comment!

Topic by minimidget    |  last reply

how do you make cornstarch packing peanuts?

I want to make filigree beads with polymer clay and it says to use cornstarch peanuts as the core and then after baking dissolve the peanuts in water.  I know how to make cornstarch modeling clay but I don't think it would be the same ingredients.

Question by alison528    |  last reply

Solvent that 100% dissolves gorilla glue? need castable material to chemically to "burn out" for a ceramic shell casting Answered

Hello. I am working on doing an aluminium lost foam casting of a small part. I read although hazardous, some had gotten successful results from using polyurethane foam (great stuff) in a mold, and proceeding as usual. I don't normally use great stuff, so I mixed gorilla glue with 1/3 water, stirred till I had small bubbles, poured into a silicone mold, and got a pretty good few castings that were VERY dense and hardly burned at all. In fact it was practically fire resistant. I threw it on hot coals and it took a long time to shrivel into a hard little mass So next time, I used dollar store foam board next, a la Grant Thompson, but with terrible failures. It seemed the foam board didn't burn very well either. A foam board riser had actually melted off and looked like it floated away in a bubble, although a regular styrofoam block I had cut to shape cast perfectly, but was too thick and the texture was too poor as the foam was so much less dense. It was mentioned in this blog post that someone used acetone to burnout a tricky patten for a lost foam casting, so I figure I have to do the same. My pattern is curing at the moment. But my silicone molds are far more precise and more detailed than my 2d representation I made with a wire cutter. So my question is there another material that is castable but water resistant, like styrofoam, that I could use a solvent to melt out. I can't really do  lost wax because I don't have the equipment and live in an apartment and have to do this stuff out on the beach. Also due to family reasons I can't be away from home for the time it takes to do burnouts, 6 hours for a full flask, but that's also the reason why I am doing the shell casting because I can't spend too much time away from the fam. Thanks for your time, sorry if I rambled. And thanks for all here and elsewhere who teach and inspire, even if they don't know they are doing it.

Question by sk8er6    |  last reply

Bouncing eggs!! What do you think?

Did you know that if you leave an egg in vinegar for a few days the vinegar will dissolve the shell of the egg and the egg can bounce!! Post your views on bouncing eggs!  Refer the video to see how to make it!  

Topic by sidgupta    |  last reply

Electrolysis? Answered

I have been messing with electrochemistry lately, and had saturated some water with NaCl (table salt). I then placed two carbon electrodes into the solution and ran a current through it. To my surprise, the carbon dissolved and a dark brown powder formed in the solution, with gas bubbles rising from both electrodes until they were gone. Anybody know what is happening??

Question by pyrorower    |  last reply

how can remove chloride from ferric chloride?

First i dissolved iron ore with Hcl and then i filtered it and then i  titrated that filtrate  with NaoH then i got precipitated iron ore solids by filter that solution, but more than 10% chlorides are present in that solids, so can any body tell how to remove that chlorides from that solids ?

Question by suribabupandiri    |  last reply

Solubility chemistry question Answered

Picture an ionic compound that dissolves in water is saturated with a small amount left over Since the solubility reaction occurs in both directions at equal rates, what's stoping the reverse reaction from forming precipitates that aren't on the surface of the lump of compound left over? why do the ions almost always precipitate on the already solid compound causing harldy any noticable change?

Question by Tombini    |  last reply

What can I do with hydrochloric acid? Answered

I have about two gallons of 12 M Hydrochloric acid. What can I do with it? And I don't want to dissolve metal or put magnesium strips in it or dump baking soda in it. I'm looking for something creative, something interesting that I can do with it.

Question by cdubnbird    |  last reply

extract skeleton from smal (dead) animal

I want to dissolve the flesh & preserve the skeleton of a small snake - i have consulted this site re: skinning the snake, & was wondering what was the easiest/best way to be rid of the flesh - perhaps simply boiling it away? any help here appreciated - also interested in skulls & skeletons of mice/rats. -thanks

Topic by queentopaz5    |  last reply