Richard NL
Well-known member
I got my license for using nitric acid >|3% as a private individual.
My experience with the license application.
Good-day everyone,
When in 2015, the employee of the local authorities was at the front door with a complaint about odor nuisance from a gas bottle wood burner, he took pictures of my homemade wood burner and the self-made flue gas/chimney in my garage and on the roof .
It has also been found that a fume hood with filter and a large-capacity fan was present.
These I use for precious metals waste recycling and then purifying the precious metals with hydrometallurgy.
This was the reason to call in an expert from a independent company to judge if everything was correct.
His conclusion was that everything was okay and that I used the same processes as the big companies only on a small scale, especially my wastewater, he had the necessary questions about.
Laws change and I also use HNO₃.
http://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32013R0098&from=NL
The possibilities were for me:
Give up my hobby.
I still have too much fun, and put in too much time and energy in it, and it would really hurt to stop it.
Staying under the government's radar, that is stressful.
Switching to alternatives, there are actually no real substitute for nitric acid and the materials I work with.
With the consultation with a forum member from another forum, we had decided to apply for a license for nitric acid.
The 35% hydrogen peroxide I owned, I diluted it to just under 12%.
In practice, I usually have to dilute it anyway.
It is mainly used to oxidize NOx so that the NOx becomes more soluble in water.
Concentration of the substance in Weight percentage I have used the following:
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=48&t=17074#p267466
http://www.handymath.com/cgi-bin/nitrictble2.cgi?submit=Entry
On the application form itself the text:
To use as a selective solvent for metals.
To use as a silver nitrate solution for electrolysis of Silver.
To use as a testing solvent.
"Substantiation, why there is no alternative available".
On the application form itself the text:
It's more dangerous to me!
The waste liquid (contaminated with heavy metals) will increase to ±tenfold.
There is no (reasonable) alternative available from a supplier.
I would also like to continue my study as a autodidact in practice.
Attached:
My underlying reason why the use of the requested precursor is not a reasonable alternative available, to achieve a similar effect with my hobby hydrometallurgy specializing in gold silver and to a lesser extent the platinum group metals.
The reason I need the higher (+3% m\m) concentration of HNO₃:
#1 To keep my amount of waste water within proportions!
You have ±1.17 ml. 70% HNO₃ and 1.17 ml. H₂O fore 1 gram of pure silver to dissolve in an aqueous environment.
±70/3=23,⅓ ml. Instead of 2,⅓ ml. at a solution of 3% m/m HNO₃.
This is a ±tenfold increase in wastewater that I have to clean again.
For base metals (copper, nickel, tin, chromium, vanadium, etc.), the double amount of HNO3 also means the double amount of waste water.
For clarification for 1 gram of metallic copper, you have ±4.68 ml. 35% HNO₃ required.
When using 3% m/m HNO₃, I don't need to dilute it, but I have ±46.68 ml. required.
#2 Reactivity becomes very slow when metal dissolves.
It is common to heat the liquid.
And then add the reagent in small doses to prevent unwanted exothermic reactions.
When using HNO₃ 3% m\m, this will no longer be logical to dilute it further by adding in advance distilled water.
There will hardly be exothermic reaction, and if it does get there it is most likely to boil over.
A delayed exothermic reaction is something that must be avoided.
Therefore, it is also a reason to heat it,and to ad small dose of HNO₃ then the chance off boil over is reduced.
#3 When purifying silver by means of electrolysis I have to start with a ±minimum percentage of 75 grams of silver per liter, this is not possible with a solution of HNO₃3% m/m.
Or I will have to partially evaporate it, but in situ there will be more than HNO₃ 3% m/m present, which is officially not allowed.
#4 Upon extraction of metallic gold in warm aqua regia, with a small amount of metallic silver as an alloy.
The silver chloride released by this dilute 3% m/m HNO₃ to a greater extent be released from the liquid before all is dissolved, and to a greater extent also stop the extraction as a silver chloride coating.
This silver chloride must be removed afterwards with ammonia which immediately receives a Ph reduction.
The waste liquid of this operation is more difficult to clean with the ammonium metal compounds.
Therefore, I want to minimize this.
Also, when this silver chloride is on the bottom of the glass cup as a sediment.
There are temperature differences in the bottom of the glassware, the risk of glass fracture is greater, thus also more likely to occur a accident.
Also the separation of the metals becomes less, so more rinses and more waste water (with ammonium metal compounds).
5# I have already stocked a supply, as it was recommended on some websites.
I just want to use it legitimately now!
#6 In the extracting metallic gold to gold chloride you want to use a small excess of nitric acid.
To make sure that there is no gold left in the materials to be extracted.
One should evaporate this liquid into a syrupy liquid to extract the excess nitric acid from this liquid.
This is necessary to enable the precipitation of metallic gold later.
When using 3% m\m HNO₃, the amount of liquid to be evaporated will go to unrealistic quantities.
7# We also have human rights here. Https://goo.gl/fznna3
I am obstructed with my freedom to develop and learn.
As an autodidact, I can also expect some practice in my study.
8# At this low concentration, it is no longer possible to test clearly where a solution, precipitate, metal, etc. consists of.
The consequence: risks of incorrect procedures, which could result in dangerous situations.
And evidently more more waste to be expected.
9# I deepened myself.
My library, the public section what I could upload (copyright infringement free).
Https://www.scribd.com/user/239055538/Richard-NL
10# There is no reasonable alternative available, technical nitric acid 3% m/m.
Well, nitric acid 3% m/m for diagnostics/analysis/research and so on.
But considering price and qualitative this does not apply.
Https://goo.gl/f6sY1H
Https://goo.gl/P4h4wF
Https://goo.gl/bCS0x7
Https://goo.gl/iPHYpp
On the application form point3.2. Basis of the quantities to be used.
Firstly, I want to report that I own 20 liters of nitric acid 60%.
There is no question in the pdf that I have to fill in the quantity i already possess.
I'm asked "Required quantity (about total period in kg)" which I estimated roughly 10 liters in 2 years.
Specific gravity at 20 ° Celsius 1.3667
Grams/cm³*1000cm³=1.3667 kg/liter.
1.3667Kg/Liter*10 Liter=13,667Kg
The amounts to be used are hard to estimate!
It depends partly on my variable number of hours/days that I work.
"Explanation of family situation with me, and limited time"
In addition, I have another hobby, driving and maintenance of older cars.
So I usually have my available time for this hobby to schedule ad-hoc as far as possible.
Therefore, it is difficult to determine a certain consumption per unit of time.
At the time of obtaining the license in Utrecht, there was a conversation with the 2 gentlemen.
They reported to my, that I was the first private person in the Netherlands with a license for hobby use of nitric acid, then I also understood why there was no experience in the Netherlands with this license for a hobby!
I also asked how far I can publish on forums about the license.
They thought it was oké to publish.
There was only one more request for fuming nitric acid, to etch metal by an artist who was logically rejected.
They also said to me that I'm an example of why they have license system for individuals available in the Netherlands.
Final conclusion for me:
This information in this post would be helpful to me if I should or would like to apply for this license for the first time.
Someone who has experience with this license would greatly simplify the process.
It's a relief for my peace of mind that I have this license.
Should there be any problems in the future for some reason for my hobby then the government has already done the necessary research and everything was in order by independent experts.
If there are any questions or concerns, I would like to hear that.
Best regards,
Richard.
My experience with the license application.
Good-day everyone,
When in 2015, the employee of the local authorities was at the front door with a complaint about odor nuisance from a gas bottle wood burner, he took pictures of my homemade wood burner and the self-made flue gas/chimney in my garage and on the roof .
It has also been found that a fume hood with filter and a large-capacity fan was present.
These I use for precious metals waste recycling and then purifying the precious metals with hydrometallurgy.
This was the reason to call in an expert from a independent company to judge if everything was correct.
His conclusion was that everything was okay and that I used the same processes as the big companies only on a small scale, especially my wastewater, he had the necessary questions about.
Laws change and I also use HNO₃.
http://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32013R0098&from=NL
The possibilities were for me:
Give up my hobby.
I still have too much fun, and put in too much time and energy in it, and it would really hurt to stop it.
Staying under the government's radar, that is stressful.
Switching to alternatives, there are actually no real substitute for nitric acid and the materials I work with.
With the consultation with a forum member from another forum, we had decided to apply for a license for nitric acid.
The 35% hydrogen peroxide I owned, I diluted it to just under 12%.
In practice, I usually have to dilute it anyway.
It is mainly used to oxidize NOx so that the NOx becomes more soluble in water.
Concentration of the substance in Weight percentage I have used the following:
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=48&t=17074#p267466
http://www.handymath.com/cgi-bin/nitrictble2.cgi?submit=Entry
On the application form itself the text:
To use as a selective solvent for metals.
To use as a silver nitrate solution for electrolysis of Silver.
To use as a testing solvent.
"Substantiation, why there is no alternative available".
On the application form itself the text:
It's more dangerous to me!
The waste liquid (contaminated with heavy metals) will increase to ±tenfold.
There is no (reasonable) alternative available from a supplier.
I would also like to continue my study as a autodidact in practice.
Attached:
My underlying reason why the use of the requested precursor is not a reasonable alternative available, to achieve a similar effect with my hobby hydrometallurgy specializing in gold silver and to a lesser extent the platinum group metals.
The reason I need the higher (+3% m\m) concentration of HNO₃:
#1 To keep my amount of waste water within proportions!
You have ±1.17 ml. 70% HNO₃ and 1.17 ml. H₂O fore 1 gram of pure silver to dissolve in an aqueous environment.
±70/3=23,⅓ ml. Instead of 2,⅓ ml. at a solution of 3% m/m HNO₃.
This is a ±tenfold increase in wastewater that I have to clean again.
For base metals (copper, nickel, tin, chromium, vanadium, etc.), the double amount of HNO3 also means the double amount of waste water.
For clarification for 1 gram of metallic copper, you have ±4.68 ml. 35% HNO₃ required.
When using 3% m/m HNO₃, I don't need to dilute it, but I have ±46.68 ml. required.
#2 Reactivity becomes very slow when metal dissolves.
It is common to heat the liquid.
And then add the reagent in small doses to prevent unwanted exothermic reactions.
When using HNO₃ 3% m\m, this will no longer be logical to dilute it further by adding in advance distilled water.
There will hardly be exothermic reaction, and if it does get there it is most likely to boil over.
A delayed exothermic reaction is something that must be avoided.
Therefore, it is also a reason to heat it,and to ad small dose of HNO₃ then the chance off boil over is reduced.
#3 When purifying silver by means of electrolysis I have to start with a ±minimum percentage of 75 grams of silver per liter, this is not possible with a solution of HNO₃3% m/m.
Or I will have to partially evaporate it, but in situ there will be more than HNO₃ 3% m/m present, which is officially not allowed.
#4 Upon extraction of metallic gold in warm aqua regia, with a small amount of metallic silver as an alloy.
The silver chloride released by this dilute 3% m/m HNO₃ to a greater extent be released from the liquid before all is dissolved, and to a greater extent also stop the extraction as a silver chloride coating.
This silver chloride must be removed afterwards with ammonia which immediately receives a Ph reduction.
The waste liquid of this operation is more difficult to clean with the ammonium metal compounds.
Therefore, I want to minimize this.
Also, when this silver chloride is on the bottom of the glass cup as a sediment.
There are temperature differences in the bottom of the glassware, the risk of glass fracture is greater, thus also more likely to occur a accident.
Also the separation of the metals becomes less, so more rinses and more waste water (with ammonium metal compounds).
5# I have already stocked a supply, as it was recommended on some websites.
I just want to use it legitimately now!
#6 In the extracting metallic gold to gold chloride you want to use a small excess of nitric acid.
To make sure that there is no gold left in the materials to be extracted.
One should evaporate this liquid into a syrupy liquid to extract the excess nitric acid from this liquid.
This is necessary to enable the precipitation of metallic gold later.
When using 3% m\m HNO₃, the amount of liquid to be evaporated will go to unrealistic quantities.
7# We also have human rights here. Https://goo.gl/fznna3
I am obstructed with my freedom to develop and learn.
As an autodidact, I can also expect some practice in my study.
8# At this low concentration, it is no longer possible to test clearly where a solution, precipitate, metal, etc. consists of.
The consequence: risks of incorrect procedures, which could result in dangerous situations.
And evidently more more waste to be expected.
9# I deepened myself.
My library, the public section what I could upload (copyright infringement free).
Https://www.scribd.com/user/239055538/Richard-NL
10# There is no reasonable alternative available, technical nitric acid 3% m/m.
Well, nitric acid 3% m/m for diagnostics/analysis/research and so on.
But considering price and qualitative this does not apply.
Https://goo.gl/f6sY1H
Https://goo.gl/P4h4wF
Https://goo.gl/bCS0x7
Https://goo.gl/iPHYpp
On the application form point3.2. Basis of the quantities to be used.
Firstly, I want to report that I own 20 liters of nitric acid 60%.
There is no question in the pdf that I have to fill in the quantity i already possess.
I'm asked "Required quantity (about total period in kg)" which I estimated roughly 10 liters in 2 years.
Specific gravity at 20 ° Celsius 1.3667
Grams/cm³*1000cm³=1.3667 kg/liter.
1.3667Kg/Liter*10 Liter=13,667Kg
The amounts to be used are hard to estimate!
It depends partly on my variable number of hours/days that I work.
"Explanation of family situation with me, and limited time"
In addition, I have another hobby, driving and maintenance of older cars.
So I usually have my available time for this hobby to schedule ad-hoc as far as possible.
Therefore, it is difficult to determine a certain consumption per unit of time.
At the time of obtaining the license in Utrecht, there was a conversation with the 2 gentlemen.
They reported to my, that I was the first private person in the Netherlands with a license for hobby use of nitric acid, then I also understood why there was no experience in the Netherlands with this license for a hobby!
I also asked how far I can publish on forums about the license.
They thought it was oké to publish.
There was only one more request for fuming nitric acid, to etch metal by an artist who was logically rejected.
They also said to me that I'm an example of why they have license system for individuals available in the Netherlands.
Final conclusion for me:
This information in this post would be helpful to me if I should or would like to apply for this license for the first time.
Someone who has experience with this license would greatly simplify the process.
It's a relief for my peace of mind that I have this license.
Should there be any problems in the future for some reason for my hobby then the government has already done the necessary research and everything was in order by independent experts.
If there are any questions or concerns, I would like to hear that.
Best regards,
Richard.