What is a polymer of low concern?
A ‘polymer of low concern’ (PLC) is a polymer that we consider to be of low concern to human health and the environment because it meets all the criteria we have set.
What is an exception to polymerization?
The polymer exemption rule defines a reactive functional group (RFG) as an atom or associated group of atoms in a chemical substance that is intended or can be reasonably anticipated to undergo further chemical reaction.
Which chemicals are subject to TSCA?
TSCA addresses the production, importation, use, and disposal of specific chemicals including polychlorinated biphenyls (PCBs), asbestos, radon and lead-based paint.
What chemicals are subject to TSCA import?
Laws and Regulations Section 6 of TSCA contains special import and export requirements for certain chemicals like PCBs, mercury, asbestos, and lead. Learn more about import-export requirements for specific chemicals.
Are fluoropolymers safe?
The fluoropolymer molecule is structured something like a Christmas tree, with a long central trunk and fluorinated side chains, which are toxic, branching off. Scientists generally agree that the polymer itself, as long as it remains stable, is unlikely to pose toxicological harm.
Is PFOA a polymer?
PFOA-related compounds are used as surfactant and for the manufacture of side-chain fluorinated polymers. Due to the surfactant properties of both PFOA and its related non-polymeric surfactants, applications exist for the use of these substances, e.g. fire-fighting foams, wetting agents and cleaners.
Do polymers need to be registered with the European Chemicals Agency (ECHA)?
However, any manufacturer or importer of a polymer shall submit a registration to the European Chemicals Agency (ECHA) for the monomer substance (s) or any other substance (s), that have not already been registered by an actor up the supply chain, if both the following conditions are met:
What is the polymer exemption rule?
In 1995 the polymer exemption rule was amended to eliminate unnecessary EPA review of eligible (low risk) polymers, to transfer the burden of ensuring eligibility from EPA to the manufacturer, to encourage the manufacture of safer chemicals and substances produced with low exposure and low release, and to reduce the number…
Which polymers are exempt from registration with TSCA?
The amount of polymer molecules presenting the same molecular weight must be less than 50 weight percent. Polymer is exempt from registration. Only new polymers (not listed on TSCA inventory ) are subject to pre-manufacture notice ( PMN ).
Are polymers exempt from CLP Regulation?
Polymers are not exempt from CLP regulation. A polymer is a substance and must be notified if it fulfils the criteria for classification as hazardous and it has been placed on the market. Importing a polymer does not correspond to the placing on the market of the monomers and any other substance from which the polymer substance originates.