Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano) in EU cosmetics: Annex VI, entry 23a
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano): the maximum concentration in ready for use preparation is 10 % (5). Annex VI, entry 23a, Regulation (EC) No 1223/2009, consolidated 18 May 2026.
- Annex
- VI: List of UV filters allowed in cosmetic products
- Reference number
- 23a
- Chemical name/INN
- 2,2′-Methylene- bis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)/Bisoctrizole
- Name of Common Ingredients Glossary
- Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano)
- CAS number
- 103597-45-1
- EC number
- 403-800-1
- Version
- Consolidated version of 18 May 2026
- Official source
- Regulation (EC) No 1223/2009, consolidated text
Official wording: restrictions
- Maximum concentration in ready for use preparation: 10 % (5) | Other: Not to be used in applications that may lead to exposure of the end user's lungs by inhalation. Only nanomaterials having the following characteristics are allowed: - Purity ≥ 98,5 %, with 2,2′-methylene-bis-(6(2H-benzotriazol-2-yl)-4-(isooctyl)phenol) isomer fraction not exceeding 1,5 %; - Solubility < 5 ng/L in water at 25 °C; - Partition coefficient (Log Pow): 12,7 at 25 °C; - Uncoated; - Median particle size D50 (50 % of the number below this diameter): ≥ 120 nm of mass distribution and/or ≥ 60 nm of number size distribution.
Notes referred to in this entry
- (5) In case of combined use of Methylene Bis-Benzotriazolyl Tetramethylbutylphenol and Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano), the sum shall not exceed the limit given in column g.
Same CAS number in other entries of the annexes
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