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Author Topic: Is there any acid which reacts with glass, but not with other substances?  (Read 13576 times)

Offline Dr.IC

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Is there any acid which reacts with glass, and it should not react with metal and SiO2.

Mod edit - Please make your subjects as the question you wish to ask.  This makes the forum tidier and easier to navigate, thanks!
« Last Edit: 16/03/2009 09:47:40 by BenV »


 

Offline Supercryptid

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I think that most glass made for windows is composed chiefly of silica, so you're out of luck in finding something that'll react with the glass but not the silica. However, some impurities in the glass might make it more or less reactive to certain acids than pure silica.

Technically, however, a glass is any solid material that does not have a regular crystalline structure. So you could have a glass made of many different materials and not just silica.

Hydrogen fluoride will react with both glass and silica. The result of the reaction is water and silicon tetrafluoride.
« Last Edit: 13/03/2009 03:07:22 by Supercryptid »
 

Offline Dr.IC

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glass is used as protective shield for die(Integrated Chip). Is there any way to do this.
 

Offline Chemistry4me

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I would think hydrofluoric acid too.
Or if you're being adventurous and have advanced equipment, perhaps some elemental fluorine? :)

http://www.iop.org/EJ/abstract/0960-1317/17/2/026/
 

Offline lightarrow

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glass is used as protective shield for die(Integrated Chip). Is there any way to do this.
Glass of which kind? There are thousands. However, if it's "commom" glass it's impossible to dissolve it without dissolving SiO2.
 

Offline Dr.IC

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Sorry i dont have any idea about glass material, but its used in semiconductor chip.
 

Offline Raghavendra

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 hello hello hello  [:o)]
   What a genious question? My mom would say that " Thinking has no limit " But my law it has " Difference "

     My answer to the question? Do you know what is acid ! How acid forms? You should know that Hydrogen does not react with gass in the solid state ?
 But when you heat a glass " The molten with forms " Does/doesn't react with glass, depending upon, which type of glass is made up of :-
 
     Water is also highly acidic in nature ! but we can't say it is acid! Depending upon the type and variation and nature of solution!!!

   But if you want reaction b/w acid and glass, for the result you have to wait for a million's of year !  :o

Good Luck Buddy :)

I think you must know about

1} Crystalls solids
2} Amorphous solids

They both have different characters
And there physical properties and etc. etc. etc....

 Also Rate of reaction , Remember ,,, We simply can't say it react's or not you have too !!!!

Byeeeee

« Last Edit: 16/03/2009 06:43:10 by Minicrochip »
 

Offline Dr.IC

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Sorry dude, i dont have much knowledge about chem, am an electronics guy. 12th was last i studied chem, now trying to explore more. i dont remember the chem classes and theory too. if you have some stuffs where i can start my chem again please mail to chandan_ug@yahoo.co.in , this will be great help to me.
 

Offline lightarrow

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Sorry i dont have any idea about glass material, but its used in semiconductor chip.
Are you sure it's used in chips? Aren't you talking, maybe, about the green fiberglass used as rest for electronic circuits? (I don't know, just asking).
« Last Edit: 16/03/2009 16:32:15 by lightarrow »
 

Offline lightarrow

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My answer to the question? Do you know what is acid ! How acid forms? You should know that Hydrogen does not react with gass in the solid state ?
What does it mean?

Quote
But when you heat a glass " The molten with forms " Does/doesn't react with glass, depending upon, which type of glass is made up of :-
What does it mean?

Quote
Water is also highly acidic in nature !
What does it mean?

Quote
But if you want reaction b/w acid and glass, for the result you have to wait for a million's of year !  :o
What does it mean?

Have you ever seen HF reacting with glass? Maybe a video could enlighten you:
hl=it
 

Offline Bored chemist

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This seems a very long thread considering that the answer is "No".
 

Offline Dr.IC

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Ya, its used in chip,


Top layer is glass, middle laser consists of circuit, that is filled one.  I want to reach the circuit creating window and, circuit has SiO2, i dont want to disturb that.
 

Offline Chemistry4me

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How can you get an answer if the glass material is not known?
 

Offline Dr.IC

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I will try to get device data sheet.
 

Offline Bored chemist

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When it comes down to it there's only 2 acid that react with most glass  HF does so readily and hot phosphoric acid will sort of do so too.
Both of these react with other substances- for example they will both react with sodium carbonate.
Therefore, as I said a while back, the answer to the question is "No".
 

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