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Assessing and Managing Chemicals under TSCA

Unsubstituted Phenylenediamines; Final Test Rule

EPA is issuing a final rule, under section 4 of the Toxic Substances Control Act (TSCA), requiring manufacturers and processors of ortho-phenylenediamine (o-pda; CAS No. 95-54—5), meta-phenylenediamine (m-pda: CAS No. 108-45-2), para-phenylenediamine (p-pda; CAS No. 100—50—3) and the sulfate salts of m-pda (m-pda.H3, SO4; CAS No.54—17-08) and p-pda (p-pda.H3, SO4; CAS No. 1624—57—75) to perform testing for neurotoxic effects, chemical fate, and aquatic toxicity.

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