oqema logo



OQEMA is an internationally active distribution company for basic chemicals and specialities headquartered in Mönchengladbach. We are a family company by tradition and conviction. Always reliable. Always responsive. Always on-site. And that, meanwhile, for 90 years.

OQEMA in the UK is based in Carterton, Oxfordshire and was previously known as Lansdowne Chemicals. It continues to be a chemical distribution, manufacturing and marketing company with a strong emphasis on reliability, safety, quality and sustainability.

OQEMA serves customers globally, providing a broad range of products in areas including:

  • Animal Nutrition
  • Aromatics;
  • Base Chemicals;
  • Personal Care; and
  • Water Treatment.

In addition to the distribution and marketing of products, OQEMA also operates a chemical manufacturing division (manufacturing nitrate products) and a specialist Hydrazine Hydrate dilution facility.

The Company is focused on meeting its customers’ requirements on a just in time basis from its comprehensive chemical stock holdings and has long-term relationships with both suppliers and customers.

In October 2015, Lansdowne Chemicals was acquired by Overlack AG of Germany www.overlack.de/en/home/.

Overlack is a family owned business, established for over 90 years with strong emphasis on reliability, safety, quality and sustainability.

Together, we are now known as OQEMA. OQEMA shares the very same values and, as a family business established since 1977, we feel the shared goals and ambitions can be nurtured and developed to maximise the potential in the numerous possibilities.

We thank our valued partners for their loyalty and trust and look forward to continuing to provide the same first class services way into the future.