Building Block Chemicals are considered as essential parts of organic synthesis procedure. Boiling point, density, melting point, ph range and solubility of these substances depend on their composition. Several versions of these chemicals cannot integrate with strong acid and oxidizing agent. Some of these Building Block Chemicals tend to vaporize when come in contact with air. Temperature and formulation method of such products play significant role in determining their solubility. Quality of these substances has been verified on the basis of their content, effectiveness, chemical stability, shelf life and density. These chemicals are salty, sour, sweet in taste and have distinctively pleasant smell.