Formaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.ormaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products.
Actually most of the salts are insoluble in water. Not all the salts include chloride!!! And of those witch contain chloride, silver, led and mercury salts are insoluble!!! chemically speaking, not all salts are soluble in a particular solvent under normal conditions..
Many ionic metal compounds are insoluble in water. We call these compounds insoluble salts, although, as we shall see, it is usually better to describe them as sparingly soluble salts. Calcium carbonate, copper (I) chloride, and lead sulfide are examples of such salts.