TDI / MDI Tank Container
Toluene Diisocyanate (TDI) and Methylene Diphenyl Diisocyanate (MDI)
Product spills of MDI typically leave a brown or amber color on the cladding, which can appear dirty and unappealing. To improve the cosmetic performance of tank containers dedicated to handling MDI and/or TDI, they are often equipped with brown cladding.
In many countries, these products are handled according to the ISOPA guidelines, which can be found at this link: https://www.isopa.org/wp-content/uploads/2024/04/PSSF-Transport-Bulk-EN-version-FINAL.pdf
Even though MDI is not classified as hazardous, it is often managed under the ISOPA guidelines in many countries.
The discharge methods and connections for tank containers are very important. Since the product reacts with moisture, the best method is to use a closed system with nitrogen overpressure. If air is used for discharge, it’s recommended to use a silica gel filter to reduce moisture exposure.
The configuration below supports all different loading and discharge options:
Often the MDI containers are often equipped with electrical heating as monomeric MDI is a liquid when heated above 38°C.