Purified Isophthalic Acid (PIA) Cas: 121-91-5 Isophthalic Acid is an organic compound with the molecular formula C8H6O4. It’s a colourless solid and it’s an isomer of phthalic acid and terephthalic acid. Isophthalic Acid Chemical Structure Composition. Production It is produced by oxidizing meta-xylene using oxygen. The process employs a cobalt-manganese catalyst. Purified Isophthalic acid is a colorless crystalline […]
Request a quotation
To request a quotation, please click on the button on the right.
Methylene Diphenyl Diisocyanate (MDI)
CAS:101-68-8
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.

