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SURAT CHEMICAL TAG::
Hydrazine hydrate traditional applications is in pharmaceuticals, water treatment, agrochemical, polymer and blowing agent and others, hydrazine hydrate is consumed in commercial applications such as rocket fuels also and other industries.
Linear Formula: H4N2 · H2O
For water Treatment, Hydrazine Hydrate GRADE :
Hydrazine Hydrate Amine used as Oxygen scavenger on ultra high pressure industrial sites
No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
The objective is to maintain a hydrazine residual between 0.05-0.2 ppm depending on operating pressure and boiler designe. Actual consumption is determined under operating conditions. A normal dosage is approximately 1 ltr. per day, depending of system layout.
Hydrazine is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems.
Hydrazine is mainly used as a foaming agent in preparing polymer foams.
No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
Test Procedure: rxmarine.com/hydrazine-test-kit
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HYDRAZINE HYDRATE 64% |
|
|
Test |
Results |
|
Appearance |
Colourless and clear |
|
Sulfate : as SO4 |
0.0001% max. |
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Chloride : as Cl |
0.0001% max. |
|
Iron : as Fe |
0.00005% max. |
|
Heavy metals : as Pb |
0.0001% max. |
|
Non volatile matter |
0.005% max. |
|
N2H4H2O |
64% solution |
Hydrazine is used as an oxygen scavenger for high pressure boilers in power plants and other industries to reduce corrosion of metal pipes and fittings. To test for hydrazine level in boiler we have simple Method, in which simply any non technical person even can perform the test. It is used mostly for the determination of small amounts of hydrazine in boiler feedwater. There are no common interferences. : link
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Hydrazine Hydrate Amine growing end-use industries such as water treatment, pharmaceuticals, agrochemicals, polymerization and blowing agents etc.
Whats the use of Hydrazine Hydrate in GOLD FACTORY?
Method to precipitate the Gold with Hydrazine Hydrate :
Recovere all gold from working area then dissolve all into Aqua Regia Solution. Leave this solution for 10 -12 hrs to complete precipitation, then Filter it out. And addition of Hydrazine hydrate 64 or 85% (liquid) works well to precipitate gold from acid gold plating baths which contain HAuCl4 solution.
After addition of Hydrazine Hydrate you can practically see big brown spongy ball like gold getting precipitated & once all the gold in the solution has precipitated the solution at the top has lot of white foam, which indicates the end of precipitation. Finally neutralise the solution with 25% urea solution.
This will give you the necessary result in recovering pure gold.
We let the solution stand overnight to settle down & recover gold from it by washing it with water.
Hydrazine Hydrate also used in GOLD purifiaction factory. Remember Hydrazine Hydrate does not work well with alkaline solution.
NOTE : You use hydrazine hydrate for gold precipitation. Don't add urea in gold chloride solution.
You can also dilute hydrazine hydrate with five parts of water, that is 1:5. Then you add it in your gold chloride solution. You can get exact value by checking your pH level of gold chloride.
Hydrazine Hydrate Reaction can be easily understand by this reaction :::
PtCl4+N2H4=Pt+N2+4HCl
4AuCl3+3N2H4=4Au+3N2+12HCl
4AgNO3+N2H4=4Ag+N2+4HNO3.