Synthesis of sodium nitrite

[the money]

Hello everyone
I hope that everyone is okay


I would like to ask a question. I hope we can benefit from our experts

In some countries buying and selling sodium nitrate and sodium nitrite is prohibited
I do not know why

So when someone wants to synthesize nitroethane, the easiest way is from sodium nitrite and sodium ethyl sulfate.

Sodium ethyl sulfate can be manufactured easily thanks to the explanations of our heroes who helped explain the method

But it is difficult for some to obtain sodium nitrite
There are also many methods for the synthesis of sodium nitrite

Can you help us synthesize sodium nitrite in the simplest way and with materials available to all?

With your help, many people will be able to benefit

Thank you all