TriMellitic Anhydride (TMA) Cas: 552-30-7 TriMellitic Anhydride Chemical Structure Composition. Production TriMellitic Anhydride (TMA) is a petrochemical intermediate manufactured in solid form. Feedstock is Trimethyl benzene (Pseudo Cumene). TMA is not considered hazardous for transport but is hazardous and toxic for handling. Uses TriMellitic Anhydride is used in polyester resins for coatings, polyamide resins (Nylon), […]
Request a quotation
To request a quotation, please click on the button on the right.
High functionality Methylene Diphenyl Diisocyanate (HFMDI)
CAS:9016-87-9
Methylene Diphenyl Diisocyanate is produced by a 4 steps reaction based on benzene as feedstock.
There are 3 isomers of MDI : 2,2-MDI, 2,4-MDI, and 4,4-MDI. The 4,4 isomer is known as pure or monomeric MDI (mMDI).The Polymeric MDI so called Crude MDI contains monomeric MDI and products with higher MW (pMDI).

MDI is used to produce foam for Insulation, PU elastomer, shoe soles, systems houses, synthetic leather, cold stores, sport floor, foundry, mining, …
MDI is the least hazardous of the commonly available isocyanates because of its low vapour pression but it is not benign.
Arpadis is one of the largest chemical distributor in Europe.
Arpadis is handling the storage, transport, export & import formalities of Methylene Diphenyl Diisocyanate globally.


