TDI / MDI tank container
Toluene Diisocyanate (TDI) and Methylendiphenyl Diisocyanate (MDI)
Product spills of MDI leave a brown/amber color on the cladding which looks dirty and unpleasant. To have a better cosmetic performance tank containers that are dedicated build for MDI and or TDI are often seen with Brown cladding.
In a lot of countries these products are handled according the Isopa guidelines, these can be found on https://www.isopa.org/wp-content/uploads/2024/04/PSSF-Transport-Bulk-EN-version-FINAL.pdf
Even MDI that is not a classified product is operated under the Isopa guidelines in many countries.
Interesting to read are the requirements on the discharge methods and the connections of the tank container. The product reacts with moisture and therefore the ideal discharge solution is a closed circuit discharge with nitrogen over pressure. In the event air is used a silica gel filter is recommend.
The below configuration supports all different loading and discharge options:
Often the MDI containers are equipped with electrical heating since Monomeric MDI is liquid when heated above 38°C.