NAP recrestalization

okay so i know you can’t really recrestallizer NAP but seeing my final yeald after 3 batches of NAP (with perchloric acid) i expected 6gr and a more colourful red, mine it’s less red and the total yeald it’s more then 8gr so 100% there something that should be in the final product i don’t even know what’s it could be so my intention are to put it slightly hot water and then filter it with a vaccum pump but i don’t know if NAP it’s solubile in water