CAS number
CAS 25973-55-1 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pen…
CAS 25973-55-1 · EC 247-384-8
Where CAS 25973-55-1 appears: every table entry that prints it among its identifiers, in the newest version of each act this record holds, and every recorded change to those entries. Many entries name a group of substances and print no number, so absence here is not absence from the law. Not legal advice.
Where it appears now
PIC Regulation Annex I, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Last changed in the version in force , by Regulation (EU) 2026/1278, the act that change names · Annex I on this site
| Chemical | CAS No | EC No | CN code | Subcategory | Use limitation | Countries for which no notification is required |
|---|---|---|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | ex29339980 | i(1)-i(2) | sr-sr |
PIC Regulation Annex I, table 2, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Last changed in the version in force , by Regulation (EU) 2026/1278, the act that change names · Annex I on this site
| Chemical | CAS No | EC No | CN code | Category | Use limitation |
|---|---|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | ex29339980 | i | sr |
PIC Regulation Annex V, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Last changed in the version in force , by Regulation (EU) 2026/1278, the act that change names · Annex V on this site
| Description of chemicals/article(s) subject to export ban | Additional details, where relevant (e.g. name of chemical, EC No, CAS No, etc.) | |
|---|---|---|
| The export ban does not apply to the export of UV-328: in articles covered by an exemption laid down in point 2 of the entry for UV-328 in Part A of Annex I to Regulation (EU) 2019/1021, in concentrations equal to or below the limit value set point 1 of the entry for UV-328 in Annex I to Regulation (EU) 2019/1021 for the purpose of Article 4(1)(b) of that Regulation. | 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | EC No 247-384-8 CAS No 25973-55-1 CN code ex29339980 |
POPs Regulation Annex I, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol
Last changed in the version in force , by Regulation (EU) 2025/843 and 2 others, the acts that change names · Annex I on this site
| Substance | CAS No | EC No | Specific exemption on intermediate use or other specification |
|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | 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. 2. 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 in 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 ; (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. 3. 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. |
REACH Annex XIV, Entry 51
Last changed in the version in force , by Regulation (EU) 2020/171, the act that change names · Annex XIV on this site
| Entry Nr | Substance | Intrinsic property(ies) referred to in Article 57 | Transitional arrangements | Exempted (categories of) uses | Review periods | |
|---|---|---|---|---|---|---|
| Latest application date | Sunset date | |||||
| 51. | 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol (UV-328) EC No: 247-384-8 CAS No: 25973-55-1 | PBT, vPvB | 27 May 2022 | 27 November 2023 | — | — |
Look up a number
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Its history
· added · PIC Regulation Annex I, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Recorded in the version in force , by Regulation (EU) 2026/1278, the act that change names. The change on its version page
| Identifiers | Chemical | CAS No | EC No | CN code | Subcategory | Use limitation | Countries for which no notification is required |
|---|---|---|---|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)CAS 25973-55-1EC 247-384-8 | 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | ex29339980 | i(1)-i(2) | sr-sr |
· added · PIC Regulation Annex I, table 2, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Recorded in the version in force , by Regulation (EU) 2026/1278, the act that change names. The change on its version page
| Identifiers | Chemical | CAS No | EC No | CN code | Category | Use limitation |
|---|---|---|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)CAS 25973-55-1EC 247-384-8 | 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | ex29339980 | i | sr |
· added · PIC Regulation Annex V, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)
Recorded in the version in force , by Regulation (EU) 2026/1278, the act that change names. The change on its version page
| Identifiers | Description of chemicals/article(s) subject to export ban | Additional details, where relevant (e.g. name of chemical, EC No, CAS No, etc.) | |
|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328)CAS 25973-55-1EC 247-384-8 | The export ban does not apply to the export of UV-328: in articles covered by an exemption laid down in point 2 of the entry for UV-328 in Part A of Annex I to Regulation (EU) 2019/1021, in concentrations equal to or below the limit value set point 1 of the entry for UV-328 in Annex I to Regulation (EU) 2019/1021 for the purpose of Article 4(1)(b) of that Regulation. | 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | EC No 247-384-8 CAS No 25973-55-1 CN code ex29339980 |
· added · POPs Regulation Annex I, the entry for 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol
Recorded in the version in force , by Regulation (EU) 2025/843 and 2 others, the acts that change names. The change on its version page
| Identifiers | Substance | CAS No | EC No | Specific exemption on intermediate use or other specification |
|---|---|---|---|---|
| 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenolCAS 25973-55-1EC 247-384-8 | 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol (UV-328) | 25973-55-1 | 247-384-8 | 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. 2. 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 in 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 ; (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. 3. 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. |
· added · REACH Annex XIV, Entry 51
Recorded in the version in force , by Regulation (EU) 2020/171, the act that change names. The change on its version page
| Identifiers | Entry Nr | Substance | Intrinsic property(ies) referred to in Article 57 | Transitional arrangements | Exempted (categories of) uses | Review periods | |
|---|---|---|---|---|---|---|---|
| Latest application date | Sunset date | ||||||
| Entry 51CAS 25973-55-1EC 247-384-8 | 51. | 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol (UV-328) EC No: 247-384-8 CAS No: 25973-55-1 | PBT, vPvB | 27 May 2022 | 27 November 2023 | — | — |
Sources
- PIC Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02012R0649-20261001, in force 1 October 2026 (external, EUR-Lex)
- POPs Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02019R1021-20260930, in force 30 September 2026 (external, EUR-Lex)
- REACH: every version the record holds; rows read from EUR-Lex consolidated version 02006R1907-20260622, detected 11 September 2026 (external, EUR-Lex)