SN after opened

[Iwillhavepeace]

After I open my SN bag how long will the SN last before it loses it's effects

 

[mrelief82]

I have the same question . Anyone have this knowledge ?

 

[Unwr!tten]

I think it lasts until its expiration date if sealed back up, but I'm not sure. Could be that it only lasts a few days.

 

[Iwillhavepeace]

I'm worried about oxidation
I hope someone that has more knowledge on this tells us

 

[Aim]

Google it! I think it starts turning into nitrate pretty fast.

 

[Iwillhavepeace]

Google it! I think it starts turning into nitrate pretty fast.

wow it looks like it's fast
even if I keep the bag sealed?

 

[Aim]

Okay, but as long as it's sealed. And just opened for a hørt time. Then I think you don't need to worrie about it. :)

 

[Deleted member 65988]

I think it lasts until its expiration date if sealed back up, but I'm not sure. Could be that it only lasts a few days.

Days? Oxidation does not take days to happen, it's a very slow process otherwise once it's opened, why should anyone using sn for analytical purposes even need to use it if the oxidation process renders the Nitrite useless in days.

wow it looks like it's fast
even if I keep the bag sealed?

SN FAQ - Storage, Recovery, Death

Disclaimer & Information Is this some sort of guide? NO. This is additional technical information. Read Stan's Guide. After you've read it – read it again. Carefully and thoroughly. How do I learn more? Search threads and read about SN. There are goodbye threads, testimonials (survivors &...

sanctioned-suicide.net

Is my SN still potent?

I have bought a pack 4 months ago and I have opened it many times during that period. I opened it last night and it looked a bit wet and lumpy, it did not have any smell where as before it did have a sweet type of smell. I wonder if it has deteriorated into nitrate due to being exposed to air...

sanctioned-suicide.net

Question about hiding my SN

I ordered SN recently. The bottle should contain 120 grams, which is much more than what I need. I'm thinking about extracting 15-25 grams of SN, putting it in a plastic ziplock bag, and then disposing of the bottle. The reason for this is because months ago, I ordered a bottle of SN but my bf...

sanctioned-suicide.net

Just read these. Questions like these keep popping up again and again when they've already been answered, sometimes all you have to do is look for yourself instead of relying on answers from users who'll tell you one thing or another, indicating that they themselves probably don't know.

 

[pthnrdnojvsc]

SN should be tested with the testing strips.

Testing my SN using the aquarium testing strips

I received the 2nd SN bottle today, because I ordered SN from 2 different sellers. So, this is the second time testing the SN using the aquarium testing strips, and decided to document and share the test results this time. I understand that the test is not highly accurate. But, I'm satisfied...

sanctioned-suicide.net

Testing my SN using the aquarium testing strips

I received the 2nd SN bottle today, because I ordered SN from 2 different sellers. So, this is the second time testing the SN using the aquarium testing strips, and decided to document and share the test results this time. I understand that the test is not highly accurate. But, I'm satisfied...

sanctioned-suicide.net

 

[Aim]

wow it looks like it's fast
even if I keep the bag sealed?

No, it doesn't start to oxidize until it's in contact with air. Also try to keep it away from sunlight and humidity! AND take a test to check it's purity. Hope this helps a bit

 

[Talvikki]

When sodium nitrite is exposed to air, it undergoes slow degradation through photochemical processes with a half-life of 82.3 days.


Explanation:

When sodium nitrite is exposed to air, it undergoes slow degradation processes influenced by light, known as photochemical processes. These reactions occur due to the interaction between sodium nitrite and light energy from the surroundings. The term "half-life of 82.3 days" indicates the time required for half of the sodium nitrite to degrade.

This means that after 82.3 days, the amount of sodium nitrite is halved due to this photochemical degradation. This degradation can vary depending on environmental factors. The fact that it's a slower process suggests that sodium nitrite doesn't rapidly decompose when exposed to air but rather diminishes gradually.

Source:
European Chemicals Agency (ECHA)

 

[Deleted member 65988]

The fact that it's a slower process suggests that sodium nitrite doesn't rapidly decompose when exposed to air but rather diminishes gradually.

Well, this is what matters for anyone to know.

The term "half-life of 82.3 days" indicates the time required for half of the sodium nitrite to degrade.

Does this happen when it's exposed to air even just after opening it once or is it frequently because usually SN is used in labs primarily to this may be aimed at that. If the degradation varies per environmental factors such as heat sources, reactant material or moisture then that 82.3 day time limit may be limited to how the SN is kept and in what prevailing conditions.

 

[Talvikki]

Well, this is what matters for anyone to know.


Does this happen when it's exposed to air even just after opening it once or is it frequently because usually SN is used in labs primarily to this may be aimed at that. If the degradation varies per environmental factors such as heat sources, reactant material or moisture then that 82.3 day time limit may be limited to how the SN is kept and in what prevailing conditions.

12-hour day at 25°C.

When sodium nitrite is exposed to light and air, it gradually breaks down. The predicted time for half of it to degrade is around 82.3 days. This process involves interactions with hydroxy radicals, and the calculation considers a 12-hour day at 25°C. In simpler terms, sodium nitrite doesn't rapidly disappear but slowly diminishes over time due to these chemical reactions.

https://echa.europa.eu/hr/registration-dossier/-/registered-dossier/14890/5/2/2

 

[Deleted member 65988]

In simpler terms, sodium nitrite doesn't rapidly disappear but slowly diminishes over time due to these chemical reactions.

So if half of it degrades inside 82.3 days, how long until it's practically not able to be used.

However, since sodium nitrite shows a very low vapour pressure evaporation is negligible; therefore, phototransformation in air is of minor importance

What does it mean in terms terms Phototransformation in air being of minor importance?