TSCA High-Priority Substances for Risk Evaluation (Formaldehyde, p-Dichlorobenzene)


Dear valued customers,

This is to inform you of a TSCA requirement that has recently been announced by EPA. According to this announcement, manufacturers of any of the 20 chemical substances designated as “high-priority chemical substances for risk evaluation” are required to self-identify by May 27, 2020 and fees associated with the risk assessment will be shared with all the identified manufacturers.

Polyplastics recognizes at this point that the following products are subject to the self-identification requirement.


All grades of DURACON® POM
Formaldehyde(CAS No. 50-00-0) is contained as an impurity(polymer degradation product)

All grades of DURAFIDE® PPS
p-Dichlorobenzene (CAS No. 106-46-7) is contained as an impurity (residual monomer)


Deadline for self-identification
May 27, 2020


Method of self-identification
Electronic reporting on EPA CDX (


Scope of self-identification requirement
U.S. manufactures and importers who are subject to this requirement as described in the following announcement of EPA.
Impurities contained in products and importers of articles are also addressed in this announcement.

EPA mentioned in a conference held on February 24 that it would consider providing an extension to the self-identification period in response to numerous comments raised from participants that exemption should be given to some manufacturers. The following is an URL of the transcript of this conference.

For those who are not manufactures or importers in the United States, please forward this information to your customers and relevant parties in the United States who are subject to this requirement. If you self-identify, you may be required to pay for the fee associated with risk assessment of the chemicals conducted by EPA.

More information may be released from EPA soon.

If you have any questions, please contact the following representatives.


Contact Information
Please inquire the subject as “TSCA” from the link below.
Poliplastics official website inquiry  


Sincerely yours,

Yoichi Kurokawa
Quality Assurance Department


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