TmNhRhMgBrSe - 8-7-2019 at 00:26
I got some sodium thiocyanate in a plastic container, but it already absorbed a lot of water and most are dissolved when I bought it. I think because
the wether is very wet and hot here. How to prevent it to absorb more water?
Abromination - 9-7-2019 at 16:14
Keep it in a sealed container in a non humid, dark and cool space. If its still bad, put it in a plastic box with a bit of desiccant in the bottom.
This shouldn't be a problem unless you have a bad cap and bottle.
Consider replacing it.
XeonTheMGPony - 9-7-2019 at 16:30
as said, quality bottles save you a ton of head ache
So dry it then store in a reliable well sealing bottle.
lab-equip - 15-7-2019 at 12:45
if you have a hygroscopic substance it would be a good idea to store (the fresh dried substance) in a container which is created with a glas jar
filled with a litttle amount of calciumchloride or magnesiumsulfate and to close this. Also silica gel would be a good idea. This would be like a
exsikattor an will safe your substance from moisture a really long time!
draculic acid69 - 17-7-2019 at 00:48
If you're going to use it in aqueous solution you could just dissolve a known amount in a desired amount of water and store as liquid.
AJKOER - 17-7-2019 at 15:36
Glass is apparently better than plastic, but more subject to breakage and resulting spills (so the corrosive/toxic nature of what you are storing
should be a factor, in my judgement). Also, dark glass is more appropriate for light sensitive compounds.
Plastic vessels vary in longevity and are sensitive to heat, light and even perhaps electrostatic particles.
Exposure of the contents to light, O2 and even CO2 may be problematic in time, especially if the reagent is not of high purity.
Remember to label the container properly to comply with any local laws.
Chemicals considered to be energetic should be used shortly after preparation, as complying with local laws may require storage in a bunker.