The Multi-Protocol Label Switching-based network is being used to connect 200 BASF sites around Europe, including major sites in the UK.
MPLS allows BASF to ensure that the most important users in the business get the bandwidth they need for their applications, and offers better service than a standard configured network.
Fareed Mohammed, BASF's director of information systems technology and architecture, said, "BT had a good understanding of our requirements and the special characteristics of our company. Working with standardised products, BT has developed an ideal solution."
By allocating bandwidth according to users' needs, the new network will reduce BASF data traffic costs, as well as freeing up bandwidth for the most business-critical processes.
As part of the contract, BT will also help BASF migrate some sites to a voice over IP system, which will help the company reduce the cost of voice calls.
BT has one of the biggest MPLS network capacities in the world and BASF plans to extend its MPLS network to include the US, Africa, and Asia.