Critical reflections on the Chemical Leasing concept

• ChL was developed as a business model to foster green and sustainable chemistry.
• It complements policy initiatives and scientific/technological approaches.
• Most of the available ChL studies have been empirical and descriptive.
• ChL is discussed through type of chemicals, collaboration, and business models theories.
• The paper proposes a clearer and more precise definition of ChL.

Chemical Leasing has been developed as a collaborative business model to complement the two main approaches (policy initiatives and scientific/technological) used to foster green chemistry and sustainable chemistry. Chemical Leasing is based on using chemicals more efficiently, reducing waste, and closing the feedback loop more effectively. This is done by shifting the focus away from profit generation, through increased sales, towards a value-added approach by providing a service. Most of the available Chemical Leasing studies have been empirical and descriptive, and generally identify only short-term benefits from process change. This paper provides critical reflections on the Chemical Leasing model based on types of chemicals, green and sustainable chemistry, business models, collaboration, and the chemical leasing cases available. Chemical Leasing offers a more efficient business model alternative to traditional industry practice, bringing economic and environmental benefits to both suppliers and users; however, its use is restricted to some specific types of chemicals (such as solvents and catalysts). The paper proposes a clearer and more precise definition of chemical leasing and argues that chemical leasing needs to be part of a holistic approach, so that the economic, environmental, social, and time dimensions of sustainability are fully addressed.