DNA solubility data in only water is scarce.
A previous question asked for a quantification of DNA solubility in water. It seemed like it would be easily answerable, however isn't quite that simple since no data seems to exist for DNA solubility in exclusively water.
Even the small amount of data about water was in the context of washing away organic compounds from the solution. This got me thinking. DNA is in an aqueous solution in biological situations, and is usually handled in aqueous solutions in labs. So why is solubility data so scarce for pure water? What is important about organic compounds for DNA solutions?
Why are other additives important for laboratory DNA solutions?
So my question is why is DNA dissolved in exclusively water seemingly "uncommon" in laboratories? Is there something about pure water that is bad for DNA storage? Is it that functionally DNA never needs to be in water because it is inaccessible to proteins? Or have I misinterpreted the lack of solubility data; water is common-place and no data exists because there is no need?
I imagine PCR is where most of the data on DNA solutions exists. What about the polar organic solvents/compounds makes them important for DNA solutions?