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Caustic Soda

Caustic Soda 50% LowPCF – certified product excellence

Caustic soda is an important base chemical for numerous applications. BASF has now a certified LowPCF variety that helps customers to offer even more sustainable products.



for customers and environment


The PCF of our Caustic Soda 50% LowPCF is reduced by 1/3

  • We contribute to Scope 3 emission reductions of our customers.
  • Caustic Soda 50% LowPCF helps to reduce PCF of final product.
  • Caustic Soda 50% LowPCF with certified PCF to claim sustainable raw material.
  • Increased brand value and commitment to sustainability targets.

TÜV certification

Product carbon footprint of Caustic Soda 50% LowPCF certified by TÜV Rheinland

TÜV certification process according to ISO 14067:2018

  • The methods used to carry out the study are consistent with the international standards.
  • The methods used to carry out the study are scientifically and technically valid.
  • The data used are appropriate and reasonable in relation to the goal of the study.
  • The interpretations reflect the limitations identified and the goal of the study.
  • The study report is transparent and consistent.

Good to know

Product Carbon Footprints


We have built an industry-leading system enabling us to provide product carbon footprints calculated with a certified digital solution.

1 Energy generation and chemical processes

2 BASF’s product carbon footprint (PCF) calculations follow the requirements and guidance given by ISO 14067:2018. In a methodology review, TÜV Rheinland has certified that the PCF methodology SCOTT developed and used by BASF SE for calculating the PCFs of BASF products is scientifically-based, is in accordance with ISO 14067:2018, and reflects the state of the art (ID-Nr. 0000080389: BASF SE - Certipedia).

 3 ISO 14040:2006, 14044:2006, 14067:2018, GHG Protocol Product Standard

Scope 3 Emissions


To serve our customers with the lowest carbon footprint materials possible, focusing only on reducing Scope 1 and 2 emissions is not enough. On average, around 70% of the carbon footprint of our products originates from our purchased raw materials (upstream Scope 3 emissions).

Membrane Cell Process


The consumption of electric energy is the lowest of the three processes and the amount of steam needed to concentrate the caustic is relatively low (less than one tonne per tonne of caustic soda)
The electricity consumption in membrane electrolysis can be significantly reduced by using renewable energy – this enables us to offer Caustic Soda 50% LowPCF.