pneumatician
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best alkali reistant material
hi, some new product alkali resistant now out there?
what is the best alkali resistant material, I'm talking about hot-boiling super strength alkali resistant material.
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Foeskes
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Stainless steel should work
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SWIM
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Nickel, silver and copper work fairly well too.
Somewhere on this site there's a great write-up of an alkalai fusion done in a silver plated bowl (silver is generally plated over copper ).
That reaction was at something like 300 degrees, and the bowl stood up well.
There is a similar experiment in Feiser and Feiser's Organic Experiments lab manual.
I believe they recommended a silver plated copper beaker, but it might have just been copper.
Certainly the stirrer they used was just copper.
I wonder how Monel would work...
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Tsjerk
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How mechanically stable is silver plated on glass? I've never made something like that, but I can imaging the chemical stability is the same as silver
coated copper and glass might be easier to get.
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pneumatician
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I need to check this but flask of SS are more expensive than pure flask of silver 
this guy try to sell this bad used little flask for 1000$
https://www.sciencemadness.org/whisper/viewthread.php?tid=12...
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Sulaiman
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Is a flask shape necessary ?
- if so then you may want to simultaneously consider whatever is after the flask ?
- if not then maybe a cheaper shape would be suitable ?
CAUTION : Hobby Chemist, not Professional or even Amateur
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pneumatician
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Quote: Originally posted by SWIM  | Nickel, silver and copper work fairly well too.
Somewhere on this site there's a great write-up of an alkalai fusion done in a silver plated bowl (silver is generally plated over copper ).
That reaction was at something like 300 degrees, and the bowl stood up well.
There is a similar experiment in Feiser and Feiser's Organic Experiments lab manual.
I believe they recommended a silver plated copper beaker, but it might have just been copper.
Certainly the stirrer they used was just copper.
I wonder how Monel would work...
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is medical use so... copper do not work, if you boil alkali in copper vessel you can see how the transparent liquid turn brown.
ok thanks for the data, I check it.
I think the best is or silver or potters clay.
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pneumatician
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| Quote: Originally posted by Tsjerk | | How mechanically stable is silver plated on glass? I've never made something like that, but I can imaging the chemical stability is the same as silver
coated copper and glass might be easier to get. |
I try with a silver plated glass flask like first step, but I need to do my own plated flask. Sometime ago I see some on sale but I not purchased it
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pneumatician
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| Quote: Originally posted by Sulaiman | Is a flask shape necessary ?
- if so then you may want to simultaneously consider whatever is after the flask ?
- if not then maybe a cheaper shape would be suitable ? |
if you find a flask, why not? I'm a fucking perfectionist 
this is like end a flask after some alkali boiling and some storage. The alkali is a soft K2CO3... I have a much, much more potent alkali to play
with... Maybe the best is platinium or gold but with the actual prices
 
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SWIM
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No, I didn't try to sell any flask for $1000.
I haven't tried to sell any metal flask ever.
Of the thousand or so lab items I've sold in the last 3 years, none of them were sold or advertised here.
Also, the link you posted is hypothesizing on the value of a Monel flask, not a steel one.
Your description of the flask as 'bad' is no more accurate than the rest of your comment.
And as I say in that thread that those flasks cost me $10 each
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pneumatician
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| Quote: Originally posted by SWIM |
No, I didn't try to sell any flask for $1000.
I haven't tried to sell any metal flask ever.
Of the thousand or so lab items I've sold in the last 3 years, none of them were sold or advertised here.
Also, the link you posted is hypothesizing on the value of a Monel flask, not a steel one.
Your description of the flask as 'bad' is no more accurate than the rest of your comment.
And as I say in that thread that those flasks cost me $10 each
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well, and many people say sponge bob is a wise guy, personal perceptions. For me, the use I want, I think your flask are unusable, SS have the SS
color, "silver". put your finger inside and pass around, you can feel if the surface is smooth or rough, if exist dirt, smell, use a weak acid or
alkali, rinse it and see if grab color etc... But only with the color...
You can sell the flask for the amount you want, this is called capitalism, buy cheap and sell expensive.
But this thread, it does not treat about your financial life, treat about a super alkali resistant flask.
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SWIM
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| Quote: Originally posted by pneumatician | | Quote: Originally posted by SWIM |
No, I didn't try to sell any flask for $1000.
I haven't tried to sell any metal flask ever.
Of the thousand or so lab items I've sold in the last 3 years, none of them were sold or advertised here.
Also, the link you posted is hypothesizing on the value of a Monel flask, not a steel one.
Your description of the flask as 'bad' is no more accurate than the rest of your comment.
And as I say in that thread that those flasks cost me $10 each
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well, and many people say sponge bob is a wise guy, personal perceptions. For me, the use I want, I think your flask are unusable, SS have the SS
color, "silver". put your finger inside and pass around, you can feel if the surface is smooth or rough, if exist dirt, smell, use a weak acid or
alkali, rinse it and see if grab color etc... But only with the color...
You can sell the flask for the amount you want, this is called capitalism, buy cheap and sell expensive.
But this thread, it does not treat about your financial life, treat about a super alkali resistant flask. |
1: I am not offering to sell you a flask because they're not for sale.
2: Your sentence(?) about it being SS because it's silver isn't even a coherent sentence. You wander around in t and at one point seem to be trying to
give me advice about something you have just admitted you are unfamiliar with.
3: It was you who posted on this thread that I was selling a 'bad' SS flask for $1000 when I am not selling anything. If you don't want to discuss my
business, then try shutting your trap about it.
4: Spongebob? Are you off your meds?
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Abromination
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| Quote: Originally posted by SWIM | | Quote: Originally posted by pneumatician | | Quote: Originally posted by SWIM |
No, I didn't try to sell any flask for $1000.
I haven't tried to sell any metal flask ever.
Of the thousand or so lab items I've sold in the last 3 years, none of them were sold or advertised here.
Also, the link you posted is hypothesizing on the value of a Monel flask, not a steel one.
Your description of the flask as 'bad' is no more accurate than the rest of your comment.
And as I say in that thread that those flasks cost me $10 each
|
well, and many people say sponge bob is a wise guy, personal perceptions. For me, the use I want, I think your flask are unusable, SS have the SS
color, "silver". put your finger inside and pass around, you can feel if the surface is smooth or rough, if exist dirt, smell, use a weak acid or
alkali, rinse it and see if grab color etc... But only with the color...
You can sell the flask for the amount you want, this is called capitalism, buy cheap and sell expensive.
But this thread, it does not treat about your financial life, treat about a super alkali resistant flask. |
1: I am not offering to sell you a flask because they're not for sale.
2: Your sentence(?) about it being SS because it's silver isn't even a coherent sentence. You wander around in t and at one point seem to be trying to
give me advice about something you have just admitted you are unfamiliar with.
3: It was you who posted on this thread that I was selling a 'bad' SS flask for $1000 when I am not selling anything. If you don't want to discuss my
business, then try shutting your trap about it.
4: Spongebob? Are you off your meds? |
I think he is trying to say that it is your own opinion that you were not trying to sell the flasks, which just makes it crazier. Some people think
spongebob is wise has to be the worst analogy to anything I have ever heard.
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
--------------------------------
Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
-------------- |
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Simoski
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| Quote: Originally posted by pneumatician | hi, some new product alkali resistant now out there?
what is the best alkali resistant material, I'm talking about hot-boiling super strength alkali resistant material. |
Have you considered HDPE plastic? ... For common commercial grades of medium- and high-density polyethylene the melting point is typically in the
range 120 to 180 °C . It is very resistant to alkali environments.
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Tsjerk
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Yes, but super strength alkali doesn't boil below those temperatures.
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morganbw
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Nickel
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kulep
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just get a pressure cooker, you can replace the lid seal with something more resistant if you want
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