The question " What is aluminum oxide soluble in?" Was a not exactly my question. That question appears to have originated four or more years ago. Apparently Research Gate has associated my question with Adhiraj Dasgupta's question. My question related to aluminum tent poles stuck together which have shock cord inside hollow aluminum tubes that are stuck together (See above).
Thank you all for your answers and questions. I do not have access to some of the recommended "solvents." Other suggestions may be entirely too reactive for the future function of the poles, especially high temperatures and/or HF or high pH NaOH. Others are clearly useless (alcohols). I can't remember if I tried lemon juice. I did not try mineral acids or any bases. I am aware of the amphoteric nature of aluminum oxide and what organic solvents are.
I opted to replace the item from the manufacturer.
The question " What is aluminum oxide soluble in?" Was a not exactly my question. That question appears to have originated four or more years ago. Apparently Research Gate has associated my question with Adhiraj Dasgupta's question. My question related to aluminum tent poles stuck together which have shock cord inside hollow aluminum tubes that are stuck together (See above).
Thank you all for your answers and questions. I do not have access to some of the recommended "solvents." Other suggestions may be entirely too reactive for the future function of the poles, especially high temperatures and/or HF or high pH NaOH. Others are clearly useless (alcohols). I can't remember if I tried lemon juice. I did not try mineral acids or any bases. I am aware of the amphoteric nature of aluminum oxide and what organic solvents are.
I opted to replace the item from the manufacturer.
Crystalline Al2O3 at room temperature is hardly soluble in any solvent, even concentrated acid or alkali, for kinetic reasons. Only amorphous Al(OH)3 may be soluble. Al2O3 only reacts with as strong solvent as melted NaOH.
Crystalline Al2O3 at room temperature is hardly soluble in any solvent, even concentrated acid or alkali, for kinetic reasons. Only amorphous Al(OH)3 may be soluble. Al2O3 only reacts with as strong solvent as melted NaOH.
From my experience point of view, both gamma-Al2O3 and alpha-Al2O3 are insoluble in either acidic or alkali solutions, probably because of kinetic reasons.
From my experience point of view, both gamma-Al2O3 and alpha-Al2O3 are insoluble in either acidic or alkali solutions, probably because of kinetic reasons.
You did not state which form of AL-Oxide you would like to dissolve: gamma-Al2O3 is a hygroscopic powder (white and fluffy) insoluble in water, but in strong acids and bases. Transition temperature approx. 800° to form unsoluble (in strong acids and bases as well) alpha-Al2O3. to be honest: From https://en.wikipedia.org/wiki/Aluminium_oxide: "Aluminium oxide is an amphoteric substance, meaning it can react with both acids and bases, such as hydrofluoric acid and sodium hydroxide, acting as an acid with a base and a base with an acid, neutralising the other and producing a salt. Al2O3 + 6 HF → 2 AlF3 + 3 H2O Al2O3 + 2 NaOH + 3 H2O → 2 NaAl(OH)4 (sodium Aluminate) " Insoluble in water, "Practically insoluble" in Ethanol, insoluble in diethyl ether. " Found in: https://pubchem.ncbi.nlm.nih.gov/compound/aluminum_oxide#section=Melting-Point , Section 4.32.6. Solubility: Difficult solubility in mineral acids and strong alkali Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007., p. 49 cited from: https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+1344-28-1 (CTRL-F 'solubil').
You did not state which form of AL-Oxide you would like to dissolve: gamma-Al2O3 is a hygroscopic powder (white and fluffy) insoluble in water, but in strong acids and bases. Transition temperature approx. 800° to form unsoluble (in strong acids and bases as well) alpha-Al2O3. to be honest: From https://en.wikipedia.org/wiki/Aluminium_oxide: "Aluminium oxide is an amphoteric substance, meaning it can react with both acids and bases, such as hydrofluoric acid and sodium hydroxide, acting as an acid with a base and a base with an acid, neutralising the other and producing a salt. Al2O3 + 6 HF → 2 AlF3 + 3 H2O Al2O3 + 2 NaOH + 3 H2O → 2 NaAl(OH)4 (sodium Aluminate) " Insoluble in water, "Practically insoluble" in Ethanol, insoluble in diethyl ether. " Found in: https://pubchem.ncbi.nlm.nih.gov/compound/aluminum_oxide#section=Melting-Point , Section 4.32.6. Solubility: Difficult solubility in mineral acids and strong alkali Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007., p. 49 cited from: https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+1344-28-1 (CTRL-F 'solubil').
Aluminium oxide is soluble in aromatic organic solvents. An aromatic solvent is a solvent that contains an aromatic hydrocarbon such as naptha, toluene or xylene. Aromatic solvents are primarily used as solvents and diluents in various industrial fields. Aromatic solvents such as toluene are commonly used in paints, varnishes, adhesives and as chemical intermediates.
Aluminium oxide is soluble in aromatic organic solvents. An aromatic solvent is a solvent that contains an aromatic hydrocarbon such as naptha, toluene or xylene. Aromatic solvents are primarily used as solvents and diluents in various industrial fields. Aromatic solvents such as toluene are commonly used in paints, varnishes, adhesives and as chemical intermediates.
Dear James Hollister, okay, there have 2 years passed since you posted your suggestions how you would start with your problem....had you have success in treating the " "break-down" tent poles of aluminum "?? [ see your answers [009] and [011] above]. IF you applied successfully some chemical or natural acidic solution (like lemon juice), would you mind to share it publicly? Thank you in advance, best regards, W.M.
Dear James Hollister, okay, there have 2 years passed since you posted your suggestions how you would start with your problem....had you have success in treating the " "break-down" tent poles of aluminum "?? [ see your answers [009] and [011] above]. IF you applied successfully some chemical or natural acidic solution (like lemon juice), would you mind to share it publicly? Thank you in advance, best regards, W.M.
Sathishkumar T P , honestly here I am asking 2 years later on, since I didn't get any information about posting of your answer [020] = question about solubility of Al-Oxide in formic acid....
Unfortunately right now I don't have an answer, but perhaps you are willing to share your experience if you got "answers" and practical advice from elsewhere?
But it might be that I found your related Question in RG, posted / asked 14th Sep, 2018 https://www.researchgate.net/post/The_aluminum_oxide_is_soluble_or_not_in_formic_acid For practical reasons only I would like to add the following 'search phrase' to end up with (I guess) interesting web-sources and articles regarding the matter: SEARCH "engines" for: [All+metal+(oxy-hydro)+oxide+minerals+are+typically+insoluble+in+water.+However%2C+they+are+soluble+in+acid+or+alkali+media+irrespective+of+strong+or+weak+acid+or+base+and+the+extent+of+dissolution+depends+on+several+factors+including+concentration+of+acid+or+base |
Sathishkumar T P , honestly here I am asking 2 years later on, since I didn't get any information about posting of your answer [020] = question about solubility of Al-Oxide in formic acid....
Unfortunately right now I don't have an answer, but perhaps you are willing to share your experience if you got "answers" and practical advice from elsewhere?
But it might be that I found your related Question in RG, posted / asked 14th Sep, 2018 https://www.researchgate.net/post/The_aluminum_oxide_is_soluble_or_not_in_formic_acid For practical reasons only I would like to add the following 'search phrase' to end up with (I guess) interesting web-sources and articles regarding the matter: SEARCH "engines" for: [All+metal+(oxy-hydro)+oxide+minerals+are+typically+insoluble+in+water.+However%2C+they+are+soluble+in+acid+or+alkali+media+irrespective+of+strong+or+weak+acid+or+base+and+the+extent+of+dissolution+depends+on+several+factors+including+concentration+of+acid+or+base |
Hi
Apparently caustic soda is the way forward as the Sodium hydroxide dissolves th ealuminium/aluminium oxide of th eheat exchanger which the deposits are attached to. Can you shed any light on this please?More
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sir/madam The aluminum oxide is soluble or not in formic acid? Please kindly answer my question.
The Aluminium oxide can be dissolved in ethanol with ph=12 that you can receive it by NaOH. And you can help Aluminium pourbaix diagram .
The Aluminium oxide can be dissolved in ethanol with ph=12 that you can receive it by NaOH. And you can help Aluminium pourbaix diagram .
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When you say NaOH can I just use caustic soda? If so what strength?More
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The question " What is aluminum oxide soluble in?" Was a not exactly my question. That question appears to have originated four or more years ago. Apparently Research Gate has associated my question with Adhiraj Dasgupta's question. My question related to aluminum tent poles stuck together which have shock cord inside hollow aluminum tubes that are stuck together (See above).
Thank you all for your answers and questions. I do not have access to some of the recommended "solvents." Other suggestions may be entirely too reactive for the future function of the poles, especially high temperatures and/or HF or high pH NaOH. Others are clearly useless (alcohols). I can't remember if I tried lemon juice. I did not try mineral acids or any bases. I am aware of the amphoteric nature of aluminum oxide and what organic solvents are.
I opted to replace the item from the manufacturer.
Once again, thank you.
The question " What is aluminum oxide soluble in?" Was a not exactly my question. That question appears to have originated four or more years ago. Apparently Research Gate has associated my question with Adhiraj Dasgupta's question. My question related to aluminum tent poles stuck together which have shock cord inside hollow aluminum tubes that are stuck together (See above).
Thank you all for your answers and questions. I do not have access to some of the recommended "solvents." Other suggestions may be entirely too reactive for the future function of the poles, especially high temperatures and/or HF or high pH NaOH. Others are clearly useless (alcohols). I can't remember if I tried lemon juice. I did not try mineral acids or any bases. I am aware of the amphoteric nature of aluminum oxide and what organic solvents are.
I opted to replace the item from the manufacturer.
Once again, thank you.
More
VOTE
Crystalline Al2O3 at room temperature is hardly soluble in any solvent, even concentrated acid or alkali, for kinetic reasons. Only amorphous Al(OH)3 may be soluble. Al2O3 only reacts with as strong solvent as melted NaOH.
Crystalline Al2O3 at room temperature is hardly soluble in any solvent, even concentrated acid or alkali, for kinetic reasons. Only amorphous Al(OH)3 may be soluble. Al2O3 only reacts with as strong solvent as melted NaOH.
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Aluminum Oxide dissolve in citric acid
Aluminum Oxide dissolve in citric acid
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I agree with James Hollister
I agree with James Hollister
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From my experience point of view, both gamma-Al2O3 and alpha-Al2O3 are insoluble in either acidic or alkali solutions, probably because of kinetic reasons.
From my experience point of view, both gamma-Al2O3 and alpha-Al2O3 are insoluble in either acidic or alkali solutions, probably because of kinetic reasons.
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You did not state which form of AL-Oxide you would like to dissolve:
gamma-Al2O3 is a hygroscopic powder (white and fluffy) insoluble in water, but in strong acids and bases. Transition temperature approx. 800° to form unsoluble (in strong acids and bases as well) alpha-Al2O3.
to be honest: From https://en.wikipedia.org/wiki/Aluminium_oxide:
"Aluminium oxide is an amphoteric substance, meaning it can react with both acids and bases, such as hydrofluoric acid and sodium hydroxide, acting as an acid with a base and a base with an acid, neutralising the other and producing a salt.
Al2O3 + 6 HF → 2 AlF3 + 3 H2O
Al2O3 + 2 NaOH + 3 H2O → 2 NaAl(OH)4 (sodium Aluminate) "
Insoluble in water, "Practically insoluble" in Ethanol, insoluble in diethyl ether. "
Found in: https://pubchem.ncbi.nlm.nih.gov/compound/aluminum_oxide#section=Melting-Point , Section 4.32.6. Solubility:
Difficult solubility in mineral acids and strong alkali
Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007., p. 49 cited from: https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+1344-28-1 (CTRL-F 'solubil').
You did not state which form of AL-Oxide you would like to dissolve:
gamma-Al2O3 is a hygroscopic powder (white and fluffy) insoluble in water, but in strong acids and bases. Transition temperature approx. 800° to form unsoluble (in strong acids and bases as well) alpha-Al2O3.
to be honest: From https://en.wikipedia.org/wiki/Aluminium_oxide:
"Aluminium oxide is an amphoteric substance, meaning it can react with both acids and bases, such as hydrofluoric acid and sodium hydroxide, acting as an acid with a base and a base with an acid, neutralising the other and producing a salt.
Al2O3 + 6 HF → 2 AlF3 + 3 H2O
Al2O3 + 2 NaOH + 3 H2O → 2 NaAl(OH)4 (sodium Aluminate) "
Insoluble in water, "Practically insoluble" in Ethanol, insoluble in diethyl ether. "
Found in: https://pubchem.ncbi.nlm.nih.gov/compound/aluminum_oxide#section=Melting-Point , Section 4.32.6. Solubility:
Difficult solubility in mineral acids and strong alkali
Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007., p. 49 cited from: https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+1344-28-1 (CTRL-F 'solubil').
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Aluminium oxide is soluble in aromatic organic solvents. An aromatic solvent is a solvent that contains an aromatic hydrocarbon such as naptha, toluene or xylene. Aromatic solvents are primarily used as solvents and diluents in various industrial fields. Aromatic solvents such as toluene are commonly used in paints, varnishes, adhesives and as chemical intermediates.
Aluminium oxide is soluble in aromatic organic solvents. An aromatic solvent is a solvent that contains an aromatic hydrocarbon such as naptha, toluene or xylene. Aromatic solvents are primarily used as solvents and diluents in various industrial fields. Aromatic solvents such as toluene are commonly used in paints, varnishes, adhesives and as chemical intermediates.
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Dear James Hollister, okay, there have 2 years passed since you posted your suggestions how you would start with your problem....had you have success in treating the " "break-down" tent poles of aluminum "?? [ see your answers [009] and [011] above]. IF you applied successfully some chemical or natural acidic solution (like lemon juice), would you mind to share it publicly? Thank you in advance, best regards, W.M.
Dear James Hollister, okay, there have 2 years passed since you posted your suggestions how you would start with your problem....had you have success in treating the " "break-down" tent poles of aluminum "?? [ see your answers [009] and [011] above]. IF you applied successfully some chemical or natural acidic solution (like lemon juice), would you mind to share it publicly? Thank you in advance, best regards, W.M.
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How do you descale Aluminum Alloys and what type of chemical is the best?
How do you descale Aluminum Alloys and what type of chemical is the best?
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Sathishkumar T P , honestly here I am asking 2 years later on, since
I didn't get any information about posting of your answer [020] = question about solubility of Al-Oxide in formic acid....
Unfortunately right now I don't have an answer, but perhaps you are willing to share your experience if you got "answers" and practical advice from elsewhere?
But it might be that I found your related Question in RG, posted / asked 14th Sep, 2018
https://www.researchgate.net/post/The_aluminum_oxide_is_soluble_or_not_in_formic_acid
For practical reasons only I would like to add the following 'search phrase' to end up with (I guess) interesting web-sources and articles regarding the matter:
SEARCH "engines" for:
[All+metal+(oxy-hydro)+oxide+minerals+are+typically+insoluble+in+water.+However%2C+they+are+soluble+in+acid+or+alkali+media+irrespective+of+strong+or+weak+acid+or+base+and+the+extent+of+dissolution+depends+on+several+factors+including+concentration+of+acid+or+base |
NB: Aluminium hydroxide (Aluminii hydroxidum)
"Solubility. Practically insoluble in water and ethanol (~750 g/l) TS;
soluble in hydrochloric acid (~70 g/l) TS and sodium hydroxide (~80 g/l) TS. [Quote from:
https://www.who.int/medicines/publications/pharmacopoeia/Aluminium_hydroxide.pdf?ua=1 ]
Further info on the "solution/ non-solution"properties one might find in RG-Thread:
https://www.researchgate.net/post/Why_aluminum_wire_does_not_dissolve_in_HCl
Best, WHM
Sathishkumar T P , honestly here I am asking 2 years later on, since
I didn't get any information about posting of your answer [020] = question about solubility of Al-Oxide in formic acid....
Unfortunately right now I don't have an answer, but perhaps you are willing to share your experience if you got "answers" and practical advice from elsewhere?
But it might be that I found your related Question in RG, posted / asked 14th Sep, 2018
https://www.researchgate.net/post/The_aluminum_oxide_is_soluble_or_not_in_formic_acid
For practical reasons only I would like to add the following 'search phrase' to end up with (I guess) interesting web-sources and articles regarding the matter:
SEARCH "engines" for:
[All+metal+(oxy-hydro)+oxide+minerals+are+typically+insoluble+in+water.+However%2C+they+are+soluble+in+acid+or+alkali+media+irrespective+of+strong+or+weak+acid+or+base+and+the+extent+of+dissolution+depends+on+several+factors+including+concentration+of+acid+or+base |
NB: Aluminium hydroxide (Aluminii hydroxidum)
"Solubility. Practically insoluble in water and ethanol (~750 g/l) TS;
soluble in hydrochloric acid (~70 g/l) TS and sodium hydroxide (~80 g/l) TS. [Quote from:
https://www.who.int/medicines/publications/pharmacopoeia/Aluminium_hydroxide.pdf?ua=1 ]
Further info on the "solution/ non-solution"properties one might find in RG-Thread:
https://www.researchgate.net/post/Why_aluminum_wire_does_not_dissolve_in_HCl
Best, WHM
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sir/madam
The aluminum oxide is soluble or not in formic acid?
Please kindly answer my question.
sir/madam
The aluminum oxide is soluble or not in formic acid?
Please kindly answer my question.
More
VOTE