The Institute maintains close association with a number professional bodies at home and abroad. Post-globalisation, the IIChE has embarked on a number of initiatives to become part of a wider network of inter-disciplinary forums and to be more visible in the international chemical eQgineering circuit.

For long, it has been a member of the Asia Pacific Confederation of Chemical Engineering, Australia, and a corresponding member of the European Federation of Chemical Engineering, Germany; the Institution of Chemical Engineers, UK; and the American Institute of Chemical Engineers (AIChE). In fact, in recent period, the Institute has forged a close tie with the AIChE, organizing joint programmes and offering dual membership at a concessional rate. The Institute is also a permanent invitee to DECHEMA, Germany.

The IIChE has been nominated to the first Board of Governors of Engineering Council of India (ECI). The ECI, incorporated in 2002, is the apex body of professional and consulting engineers in India, representing various engineering disciplines.

The Institute became the first organization from the developing countries to join the Executive Committee of the World Chemical Engineering Council, which was formed in Melbourne in 2001. The IIChE President represents the Institute in the Council.

Since 2003, the Institute has forged a collaboration with InnoCentive Ine., a US-based organization, which offers a wide platform to the international scientific community, to work on complex scientific problems and find their solutions.

At the national level, the Institute is represented at various committees/sub-committees of Bureau of Indian Standards and Technical Advisory Board - Chemical Science & Technology, CSIR.