I live in a high humidity location and every winter, mold forms on one of my walls due to water sticking on it during the cold times. This also ruins the paint.
I found out that certain materials absorb water from the air, so I decided to make my own dehumidifier based on sea salt. The problem is alleviated slightly, but not fully - the salt becomes moist, but I think after a certain point it just can't absorb any more humidity.
So I was wondering how much salt I would need to bring the humidity in my room to a normal level.
I looked for things like "hygroscopic materials water absorption levels" on Google, but I did not have much luck.
What I am looking for is a formula like:
X kg of sea salt will absorb Y kg of water at Z% humidity
I have no background in chemistry, unfortunately, so I am not even sure if I am searching for this formula using the right terms.