1,4-butanediol appears as odorless colorless liquid or solid (depending upon temperature).

Used as a chemical intermediate for tetrahydrofuran and other acetylenic chemicals; 

As a monomer for polybutylene terephthalate resins; 

As a chain extender for polyurethane resins; 

As an intermediate in polyester resins; 

In the production of 1,4-butanediol dimethanesulfonate (myleran); 

Also used as a humectant; 

[HSDB] Used as a solvent, an intermediate for plasticizers, and a cross-linking agent in polyurethane elastomers;