Annex
VI
Entry
23
METHYLENE BIS-BENZOTRIAZOLYL TETRAMETHYLBUTYLPHENOL
2,2'-Methylene bis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol) / Bisoctrizole
CAS
2 records
CAS 103597-45-1
CAS 103597-45-1 matches 2 EU annex records across Annex II–VI of Regulation 1223/2009.
Records for CAS 103597-45-1
2 totalAnnex
VI
Entry
23a
METHYLENE BIS-BENZOTRIAZOLYL TETRAMETHYLBUTYLPHENOL (NANO)
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (nano)
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-be…
How CAS 103597-45-1 is used on this site
CAS 103597-45-1 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 2 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.
Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 103597-45-1 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.
Frequently asked questions
A substance identified by CAS 103597-45-1 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.
Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.
A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.
Use the INCI Checker to scan your full ingredient list against all EU annex entries. The checker matches by INCI name. For CAS-based matching, verify against raw material specification sheets and compare CAS numbers with the entries listed on this page.
Tools & next steps
Check your formula
Scan a full INCI list, then use CAS 103597-45-1 to cross-check any supplier documents behind the matched substances.
INCI CheckerSearch by name
Search for INCI names, aliases or related identifiers that sit alongside CAS 103597-45-1 in your documentation.
Search