Raw materials

Raw materials

We work continuously to ensure the efficient use of resources. This enables us to reduce our environmental impact and cut costs. The most important raw material used in the production of our gases is air. In terms of weight, more than 80 percent of the gases sold by us in 2017 was derived from this natural raw material. Carbon dioxide is also a key raw material for Linde. We recover around 80 percent of our carbon dioxide from recycling processes and around 10 percent from purely organic processes. Carbon dioxide is, for example, a by-product from the fermentation of renewable raw materials.

When we manufacture products, another principal input is energy. The main packaging material we use is gas cylinders. A typical Linde cylinder has a lifespan of many years and is refilled on average four times a year. At the end of 2017, there were more than 25 million Linde cylinders in circulation. In addition, key materials processed by us include steel and aluminium, which are used in particular for the manufacture of components in plant construction.

Technologies for renewable raw materials

Our technologies underpin the use of renewable energy and renewable raw materials. We are participating for example in a pilot project in Mainz, Germany. In what is currently the largest polymer electrolyte membrane electrolysis plant in the world, renewable energy has been used to produce hydrogen since 2015. In 2017, the plant was designated a "Landmark in the Land of Ideas" by a joint place-branding initiative supported by the German government and the German economy. Hydrogen production at the plant results in greenhouse gas emissions which are 75 percent lower than in hydrogen production based on fossil fuels. The plant is designed to produce 200 tonnes of hydrogen per annum.

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Usage of resources and materials (in tonnes)1


























In line with the information in the Financial Report 2017, the figures provided for the years 2015, 2016 and 2017 exclude the business of the logistics service provider Gist, as it has been reported as a discontinued operation.

Geprüft von KPMG

Audited by KPMG

Raw materials and suppliesGeprüft von KPMG












Packaging materialsGeprüft von KPMG













We have examined our supply chain for conflict minerals listed in the US Dodd-Frank Act. Against this background, all suppliers to our electronics segment are required to confirm that their products are free of conflict minerals. We use supplier screening and audits to test the accuracy of our suppliers’ assurances.

GRI Indicators

UNGC Indicators

Sustainable Development Goals