C4H10O2. This is the formula of 1,4-Butanediol, a chemical compound derived from butane, a colourless gas which is obtained through fractional distillation of oil and natural gas. It is a fossil-derived liquid, widely used as a solvent and for the production of plastics, elastic fibres – such as spandex – and polyurethan. It is also used in the pharmaceutical industry, as well as a recreational drug, under the name of “One Comma Four,” which is the chemical bond between oxygen and hydrogen. Most importantly, butanediol is a real treasure for industry.  Currently, the total value of the global industrial market for 1,4-Bdo – as it is called in the sector – is estimated at around €3.5 million. The main producers of Bdo from fossil fuels are the big world chemical groups:...