Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 2 records

CAS 103597-45-1

CAS 103597-45-1 matches 2 EU annex records across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 103597-45-1
CAS 103597-45-1PubChem CID 3571576

Bisoctrizole

Bisoctrizole is a diarylmethane. — ChEBI

IUPAC name
2-(benzotriazol-2-yl)-6-[[3-(benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl]methyl]-4-(2,4,4-trimethylpentan-2-yl)phenol
Molecular formula
C41H50N6O2
Molecular weight
658.9 g/mol
Exact mass
658.39952486 Da
XLogP3
12.8
Topological polar surface area
102.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

FAT 75'634Bisoctrizole [USAN]Bisoctrizol8NT850T0YSNSC-759873BISOCTRIZOLE [MI]FAT-75634BISOCTRIZOLE [INN]
16 more reported names
BISOCTRIZOLE [MART.]BISOCTRIZOLE [USP-RS]BISOCTRIZOLE [WHO-DD]BISOCTRIZOLE [USP MONOGRAPH]2-(2H-1,2,3-benzotriazol-2-yl)-6-{[3-(2H-1,2,3-benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl]methyl}-4-(2,4,4-trimethylpentan-2-yl)phenolPhenol, 2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)-Phenol, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)-BISOCTRIZOLE (MART.)BISOCTRIZOLE (USP-RS)BISOCTRIZOLE (USP MONOGRAPH)2,2'-METHYLENEBIS(6-(2-BENZOTRIAZOLYL)-4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOL2,2'-METHYLENEBIS(6-(2-BENZOTRIAZOLYL)-4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOL)PHENOL, 2,2'-METHYLENEBIS(6-(2H-BENZOTRIALZOL-2-YL)-4-(1,1,3,3-TETRAMETHYLBUTYL)-bisoctrizolumPhenol, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl]-4-(1,1,3,3-tetramethylbutyl)-2-(2H-1,2,3-benzotriazol-2-yl)-6-((3-(2H-1,2,3-benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl)methyl)-4-(2,4,4-trimethylpentan-2-yl)phenol
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:135865

bisoctrizole

Formula
C41H50N6O2
Average mass
658.891 g/mol
Monoisotopic mass
658.39952 Da
Formal charge
0
  • diarylmethane — is a (CHEBI:51614)
  • diarylmethane — is a (CHEBI:51614)
Additional curated names
bisoctyltriazoleFAT 75'634FAT-75634MBBTNSC-759873
Cross-references from this source
  • CAS: 103597-45-1 — DrugCentral
  • MANUAL_X_REF: 3031 — DrugCentral

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2017-02-23. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match3571576

Attributed physical-property, hazard, environmental and use annotations.

  • Solubility: < 5 ng/L at 25 °C Source: DrugBank
  • GHS Hazard Statements: H413: May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P273, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Note: This chemical does not meet GHS hazard criteria for 1.7% (14 of 842) of reports. Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H413 (98.3%): May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P273, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 842 reports by companies from 4 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 14 of 842 reports by companies.; There are 3 notifications provided by 828 of 842 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H413 (100%): May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 107 reports by companies from 1 notifications to the ECHA C&L Inventory.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H413: May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard] Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
  • Precautionary Statement Codes: P273, and P501 (click each P-code to see the statement) Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
  • Uses: Plastics -> Typical concentration range in plastic materials -> 0.2 - 6.0% Source: NORMAN Suspect List Exchange

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 103597-45-1

2 total
Annex
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…

EC
403-800-1
Max concentration

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.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.
Check this CAS number

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 Checker

Browse annexes

Browse all EU cosmetic regulation annexes by category.

All annexes

Search by name

Search for INCI names, aliases or related identifiers that sit alongside CAS 103597-45-1 in your documentation.

Search