Is 4-T-Butyl Benzaldehyde safe in cosmetics?
4-T-Butyl Benzaldehyde has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: permitted. 1 toxicological study endpoint(s) are available in our database.
4-T-Butyl Benzaldehyde
Also known as: Benzaldehyde, 4-(1,1-dimethylethyl)-, p-t-Butylbenzaldehyde, EINECS 213-367-9, p-tert-Butylbenzaldehyde, UNII-QXF0QY8503
INCI: 4-T-BUTYL BENZALDEHYDE
4-T-Butyl Benzaldehyde (CAS 939-97-9) is a cosmetic cosmetic ingredient functioning as Fragrance ingredient. Reported NOAEL =12.5 mg/kg bw/day in Rat (ToxValDB_ECHA_IUCLID); EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.
View industrial chemical safety profile for CAS 939-97-9 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
4-T-Butyl Benzaldehyde is prohibited in EU cosmetics but has active industrial GHS classifications (H301, H302, H317, H334, H361, H400, H410).
Source: Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
Function
Fragrance ingredient
Safety Rating
MODERATE
Chemistry & Identifiers
EC Number
213-367-9
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
Permitted; no specific FDA restriction
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 4-T-Butyl Benzaldehyde.
Calculate MoS for your specific formulation with the MoS Calculator.
Toxicological Studies
1 study endpoint found for 4-T-Butyl Benzaldehyde. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.
| Endpoint | Value | Route | Species | Study Type | Source |
|---|---|---|---|---|---|
| NOAEL | =12.5 mg/kg bw/day | oral | Rat | reproduction developmental | ToxValDB_ECHA_IUCLID |
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Intermediate
Tonnage Band
Intermediate use only
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Deodorizer
Expert Verdict
Expert safety assessment and concern-level summary for 4-T-Butyl Benzaldehyde.
Regulatory Flags
potential-allergen
fragrance-component
NOAEL Studies Summary
View details ->Public NOAEL study rows linked to 4-T-Butyl Benzaldehyde by CAS number or substance name.
Studies
1
Lowest NOAEL
12.5 mg/kg bw/day
Highest NOAEL
12.5 mg/kg bw/day
ToxValDB_ECHA_IUCLID
Known Synonyms
Benzaldehyde, 4-(1,1-dimethylethyl)-
p-t-Butylbenzaldehyde
EINECS 213-367-9
p-tert-Butylbenzaldehyde
UNII-QXF0QY8503
Chemical Function
Deodorizer
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
ChEMBL ID
CHEMBL242962
Frequently Asked Questions
Is 4-T-Butyl Benzaldehyde allowed in the EU?
4-T-Butyl Benzaldehyde EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does 4-T-Butyl Benzaldehyde do in cosmetics?
4-T-Butyl Benzaldehyde functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: 939-97-9.
What is the NOAEL for 4-T-Butyl Benzaldehyde?
The NOAEL (No Observed Adverse Effect Level) for 4-T-Butyl Benzaldehyde is =12.5 mg/kg bw/day based on a reproduction developmental study via oral route in Rat. Source: ToxValDB_ECHA_IUCLID.
Is 4-T-Butyl Benzaldehyde used outside cosmetics?
4-T-Butyl Benzaldehyde also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does 4-T-Butyl Benzaldehyde have different safety status in cosmetics vs industrial chemicals?
4-T-Butyl Benzaldehyde is prohibited in EU cosmetics but has active industrial GHS classifications (H301, H302, H317, H334, H361, H400, H410).
Compliance Tools
Check 4-T-Butyl Benzaldehyde compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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