Water- soluble salts

For reasons of advantageous solubility characteristics and of availability, it is preferred that the water-soluble salts comprise cheap oil paintings a cation selected from lithium, sodium potassium, magnesium, zinc, aluminium and ammonium ions, preferably sodium, potassium, magnesium, zinc and ammonium ions, and an anion selected from sulphate, thiosulphate, halogen such as chloride, bromide and iodide, and phosphate ions, most preferably thiosulphate, sulphate and chloride ions.

Examples of particularly preferred water-soluble salts are sodium thiosulphate, potassium thiosulphate, ammonium thiosulphate oil painting, sodium chloride, potassium chloride, ammonium sulphate, zinc sulphate, and magnesium sulphate.
To improve the humidity resistance of the paint it is preferred that the water-soluble salt have a critical relative humidity of above 80%, in particular above 85%.

For this reason, zinc sulphate is especially preferred and may give paints that can be used even in humid rooms provided it is not subjected to direct spraying of water. Such oil paintings for sale paints are usually flexible and less prone to cracking.