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POPs Convention listed DP and UV-328 in Annex A for Global Ban

Parties must take measures to phase out the production and use of chemicals listed under Annex A.

At the 11th Conference of the Parties (COP) to the Stockholm Convention held from 1 to 12 May, 2023, delegates representing 180 countries took important decision to list three persistent organic pollutants (POPs), namely the pesticide methoxychlor and the industrial chemicals Dechlorane Plus and UV-328 in Annex A to the Convention. The listing will require Parties to eliminate the production and use of these chemicals.

As agreed, methoxychlor will be banned without exemption, while Dechlorane Plus and UV-328 will be granted time-limited exemption in certain applications. 

Here are the main usage and hazard of three POPs: 

SubstanceCAS No.UsageHazard


  • Used as an insecticide combating a wide range of pests

  • Replacement for DDT

  • Persistent, bioaccumulative and toxic (PBT)

  • Endocrine disruptor

Dechlorane Plus

13560-89-9; 135821-03-3; 135821-74-8

  • Used as flame retardant in many polymeric systems  

  • Used in thermosets such as epoxy and polyester resins, polyurethane foam, polyethylene, ethylene propylene diene monomer rubber, etc. 

  • PBT

  • Long-range environmental transport

  • Used as a UV absorber In paints, coatings and sealants

  • Used as an additive in plastics, printing ink and adhesives

  • PBT

  • Very persistent and very bioaccumulative (vPvB)

  • Long-range environmental transport

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