High and Low Molecular Weight Phthalates :

Phthalates can be separated into two categories: first is - high molecular and second is - low molecular weight, with high molecular weight phthalates now representing over 80 percent of European market for plasticizers.
Low molecular weight phthalates include those with 3-6 carbon atoms in their chemical backbone; the most common types being Di(2-ethylhexyl) phthalate (DEHP), Di-butyl phthalate (DBP), Di- isobutyl phthalate (DIBP) and Butyl benzyl phthalate (BBP).
Cause there is possible health effects of low phthalates in the environment, including Di(2-ethylhexyl) phthalate, there is movement to replace them with safer alternatives in Canada, the European Union, and the United States.
They represent about 15% of the European market. High molecular weight phthalates contain those with 7-13 Carbon atoms in their chemical backbone, which gives them increased permanency and durability.
The most common types of high phthalates include di-isononyl phthalate (DINP) and di-isodecyl phthalate (DIDP).
The European market has been shifting in the last 10 years from low to high phthalates, which today represent over 80% of all the phthalates currently being produced in Europe.