The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at 1 atmosphere pressure. Units of solubility are given in grams per 100 milliliters of water (g/100ml), unless shown otherwise. The substances are listed in alphabetical order.
In general, substances have to be exposed to near boiling water for a short while to fully dissolve.
References
Solubility table Wikipedia(Text) CC BY-SA