MMS POWDER

I found MMS powder, actually NaClO2 powder 80% pure, is this OK or does it have to be 100% pure?
thanks for the reply!

jimhumble.co/how-to-make-mms

"What about 99%+ ACS Grade? While the fact that it contains no inert ingredients may seem attractive, this grade of sodium chlorite is quite dangerous to handle. At purities approaching 90%, Sodium Chlorite becomes unstable. It can be percussively explosive, cause organic material to spontaneously combust, and it is reactive to sunlight. The inert salts added to the 80% and 90% Sodium Chlorite act as buffers and stabilize it. 80% is easy to store, handle, and is more forgiving to light, and temperature." 

"I would strongly discourage anyone without knowledge and experience with this chemical to avoid procuring 99% Sodium Chlorite."

mmsinfo.org/infosheets/What_is_MMS_and_How_to_Make_it.pdf

thank you!
I bought 80%, but it's already a bit sticky - it has lumps - lumps.
Do you think he's still good? Can I use it?

Do you have powder or flakes? I have only seen flakes and they can stick together. I guess powder would do the same. 

You should store it in a glass container with an air-tight plastic cap, in a cool dark place. Should last about 20 years. 

 

Powder...
it looks like this powder is very hygroscopic and has stuck a bit, but you crush it nicely with your fingers, they are not hard lumps.
Thank you again for your time and kindness !!!!!