Bedlasky
International Hazard
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Registered: 15-4-2019
Location: Period 5, group 6
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NaClO2 storage
Hi.
I am thinking about buying 24,5% NaClO2 solution. I plan to buy 80ml of it (the smallest pack from supplier). I don't need it a lot but I have on mind
few experiments with it. Are there some special precautions for storage? I have wooden cupboard and there isn't much space. I have in it acids,
organics, reducing agents with aren't compatible with NaClO2, so probably I will find different place or just store it on the top of cupboard.
[Edited on 7-1-2020 by Bedlasky]
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woelen
Super Administrator
Posts: 8014
Registered: 20-8-2005
Location: Netherlands
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Mood: interested
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NaClO2 is stable on storage. I have a 28% solution, which is over 10 years old and it still is as good as when I purchased it. I also have solid
NaClO2 (between 80 and 85% by weight, the rest is NaCl). This also is perfectly stable.
Avoid accidental exposure to strong acids. This produces a lot of ClO2, which may lead to fire and/or explosions. As long as the material is stored in
a stable container and cannot get in contact with acids or reducing solids you do not have to be afraid of fire.
NaClO2 is very reactive. A mix of the dry powder with powdered sugar, sulfur or red phosphorus can be ignited by a little friction. The solution of
NaClO2 is less reactive, but with strong acids, quite a lot of ClO2 is released, which can be ignited to give an explosion. ClO2 also explodes in
contact with gaseous NH3 or NO2. I also had an explosion of a mix of NaNO2 and NaClO2 on addition of a single drop of conc. HCl.
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