mystery substance
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mystery substance
I have a piece of equipment that has the following liquid chemicals CH₃COOH + HF + HNO3 they were leaking onto a pump with an aluminum body. the end result is a white crystalline substance that is bonded to the cabinet. the cabinet is constructed from PFA. this stuff is bonded so well that I have to use a chisel to remove it. can anyone tell me what this stuff is?
- ChenBeier
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Re: mystery substance
Very strong chemical mixture. It will be an mixture of aluminiumoxide and -flouride.
- Dhamnekar Winod
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Re: mystery substance
What is the equation and type of this chemical reaction?
Last edited by Dhamnekar Winod on Thu Apr 15, 2021 4:43 am, edited 1 time in total.
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- ChenBeier
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Re: mystery substance
Oxidation of Aluminium, will create Aluminium oxide by nitric acid and Aluminium flouride by hydrogen flouride, Aluminium acetate is minor from acetic acid.
- Dhamnekar Winod
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Re: mystery substance
Is the balanced chemical equation for the above chemical reaction correct?
3 HF + 2 HNO3 + 3 CH3COOH + 6Al → 2 Al2O3 + AlF3 + AlC6H9O6 + 4 H2 + N2
3 HF + 2 HNO3 + 3 CH3COOH + 6Al → 2 Al2O3 + AlF3 + AlC6H9O6 + 4 H2 + N2
Any science consists of the following process. 1) See 2)Hear 3)Smell,if needed 4)Taste, if needed 5)Think 6)Understand 7)Inference 8)Take decision [Believe or disbelieve, useful or useless, true or false, cause or effect, any other criteria]
- ChenBeier
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Re: mystery substance
NO. Dont use the solver without knowledge what is going on.
The main reaction is the redox reaction Al and HNO3
HNO3 + 3 H+ + 3e- => NO + 2 H2O Reduction
2 Al + 3 H2O => Al2O3 + 6 H+ + 6 e- Oxidation
2 Al + 2 HNO3 => Al2O3 + 2 NO + H2O summery
The oxid is able to react with HF or CH3COOH.
The main reaction is the redox reaction Al and HNO3
HNO3 + 3 H+ + 3e- => NO + 2 H2O Reduction
2 Al + 3 H2O => Al2O3 + 6 H+ + 6 e- Oxidation
2 Al + 2 HNO3 => Al2O3 + 2 NO + H2O summery
The oxid is able to react with HF or CH3COOH.
- Dhamnekar Winod
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Re: mystery substance
Thanks for your correct answer.
Any science consists of the following process. 1) See 2)Hear 3)Smell,if needed 4)Taste, if needed 5)Think 6)Understand 7)Inference 8)Take decision [Believe or disbelieve, useful or useless, true or false, cause or effect, any other criteria]