Roughly half of the product derived from thermal-cracking of long-chain hydrocarbons was C2 and C3 gases, useful for thier ethylene and propylene content, but not for the gasoline technology of the 1930s.

• 长链碳氢化合物热裂化所得的产品大约有半数是分子中含2个或3个碳原子的气体，其中的乙烯和丙稀是有用的，但并不适用于30年代的汽油工艺。