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..
Table salt (NaCl) is soluble in water, but there are other salts such as lead chloride which are insoluble or only slightly soluble. 1. Filter the mixture to get the filtrate (soluble salt) and residue (insoluble salt) 2. Wash the residue with distilled water to clean away the leftover filtrate in t â¦ he insoluble salt.