Persistent Organic Pollutants (POPs) are substances that, once released into the environment, accumulate and pose serious risks to both ecosystems and human health.
Addition of UV-328 to Annex I (Prohibited Substances) of the EU POPs Regulation
CAS Number: 25973-55-1 (GADSL D/P and EU REACH SVHC)
Primary Applications: Used as a light stabilizer in surface coatings and plastic products intended for outdoor exposure, etc
For full regulatory text, refer to the table below. (* Provisions applicable to automotive parts are highlighted in red)
Substance
CAS
Specific exemption on intermediate use or other specification
1
UV-328
25973-55-1
For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of UV-328 equal to or below: (a) 100 mg/kg (0,01 % by weight) from 4 August 2025; (b) 10 mg/kg (0,001 % by weight) from 4 August 2027; (c) 1 mg/kg (0,0001 % by weight) from 4 August 2029; where they are present in substances, mixtures or articles.
By way of derogation, the placing on the market of UV-328 present in articles and the use of such articles shall be allowed for the following purposes: (a) in land-based motor vehicles, until 4 August 2030; (b) in industrial coating for land-based motor vehicles, engineering machines, rail transportation vehicles, and in heavy-duty coatings for large steel structures, until 4 August 2030; (c) in mechanical separators in blood collection tubes, until 4 August 2030; (d) in triacetyl cellulose film in polarisers, until 4 August 2030; (e) in photographic paper, until 4 August 2030; (f) in civilian and military aircrafts, until 4 August 2030; (g) in spare parts for any of the following: (i) land-based motor vehicles; (ii) stationary industrial machines for use 2(ㅎin agriculture, forestry and construction; (iii) liquid crystal displays in instruments for analysis, measurements, control, monitoring, testing, production and inspection, other than for medical applications; where UV-328 was initially used in their production, until the end of their service life or 31 December 2043, whichever comes earlier; (h) in spare parts for any of the following: (i) liquid crystal displays in devices within the scope of Regulation (EU) 2017/745, and within the scope of Regulation (EU) 2017/746 of the European Parliament and of the Council (*1); (ii) liquid crystal displays in instruments for analysis, measurements, control, testing, production and inspection; where UV-328 was initially used in their production, until the end of their service life; (i) in spare parts for civilian and military aircrafts where UV-328 was initially used in their production, until 31 December 2030.
Articles containing UV-328 already in use in the Union before or on the date of expiry of the relevant exemption laid down in point 2(a) to (i) may continue to be used.
On July 15, 2025, an amendment was published adding UV-328 to Annex I (Prohibited Substances) of the EU POPs Regulation.
Regulation Overview
The EU POPs Regulation (Persistent Organic Pollutants, Regulation (EU) 2019/1021) is based on the Stockholm Convention and addresses the prohibition, restriction, release reduction, and waste management of persistent organic pollutants (POPs).
Persistent Organic Pollutants (POPs) are substances that, once released into the environment, accumulate and pose serious risks to both ecosystems and human health.
Examples of chemicals identified as POPs include:
Pesticides (e.g., DDT)
Industrial chemicals (e.g., PCBs – polychlorinated biphenyls)
Unintended by-products generated from manufacturing, combustion, or decomposition processes (e.g., dioxins and furans)
Key amendment details
Commission Delegated Regulation (EU) 2025/843
Date of Publication: July 15, 2025
Entry into force: August 4, 2025
Addition of UV-328 to Annex I (Prohibited Substances) of the EU POPs Regulation
CAS Number: 25973-55-1 (GADSL D/P and EU REACH SVHC)
Primary Applications: Used as a light stabilizer in surface coatings and plastic products intended for outdoor exposure, etc
For full regulatory text, refer to the table below. (* Provisions applicable to automotive parts are highlighted in red)
UV-328
25973-55-1
For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of UV-328 equal to or below:
(a) 100 mg/kg (0,01 % by weight) from 4 August 2025;
(b) 10 mg/kg (0,001 % by weight) from 4 August 2027;
(c) 1 mg/kg (0,0001 % by weight) from 4 August 2029;
where they are present in substances, mixtures or articles.
By way of derogation, the placing on the market of UV-328 present in articles and the use of such articles shall be allowed for the following purposes:
(a) in land-based motor vehicles, until 4 August 2030;
(b) in industrial coating for land-based motor vehicles, engineering machines, rail transportation vehicles, and in heavy-duty coatings for large steel structures, until 4 August 2030;
(c) in mechanical separators in blood collection tubes, until 4 August 2030;
(d) in triacetyl cellulose film in polarisers, until 4 August 2030;
(e) in photographic paper, until 4 August 2030;
(f) in civilian and military aircrafts, until 4 August 2030;
(g) in spare parts for any of the following:
(i) land-based motor vehicles;
(ii) stationary industrial machines for use 2(ㅎin agriculture, forestry and construction;
(iii) liquid crystal displays in instruments for analysis, measurements, control, monitoring, testing, production and inspection, other than for medical applications;
where UV-328 was initially used in their production, until the end of their service life or 31 December 2043, whichever comes earlier;
(h) in spare parts for any of the following:
(i) liquid crystal displays in devices within the scope of Regulation (EU) 2017/745, and within the scope of Regulation (EU) 2017/746 of the European Parliament and of the Council (*1);
(ii) liquid crystal displays in instruments for analysis, measurements, control, testing, production and inspection;
where UV-328 was initially used in their production, until the end of their service life;
(i) in spare parts for civilian and military aircrafts where UV-328 was initially used in their production, until 31 December 2030.
Articles containing UV-328 already in use in the Union before or on the date of expiry of the relevant exemption laid down in point 2(a) to (i) may continue to be used.