Also known as: FD & C Blue No. 1 (Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo-, inner salt, disodium salt), Aizen Food Blue No. 2, Brilliant Blue FCF Supra, Canacert Brilliant Blue FCF, Cosmetic Blue Lake (+15 more)
INCI: CI 42090
CI 42090 (Brilliant Blue FCF) (CAS 3844-45-9) is a cosmetic colorant functioning as Colorant, Hair Dyeing Agent. NOAEL 631 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); EU Regulation 1223/2009 status: permitted, max 0.5% (hair dye use; no limit as general colorant under Annex IV Part 1). Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.
EU Max Conc.0.5% (hair dye use; no limit as general colorant under Annex IV Part 1)
US US Statuspermitted
US NotesPermanently listed color additive (FD&C Blue No. 1) since 1969; batch certification required. Approved for general use in food, drugs, and cosmetics with no concentration cap.
For full compliance data across multiple jurisdictions, use the
Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for CI 42090 (Brilliant Blue FCF).
Calculate MoS for your specific formulation with the
MoS Calculator.
Toxicological Studies
10 study endpoints found for CI 42090 (Brilliant Blue FCF). 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
200 mg/kg bw/day
oral
rabbit
Developmental
COSMOS_DB
NOAEL
250 mg/kg bw/day
oral
mouse
Carcinogenicity
COSMOS_DB
NOAEL
1000 mg/kg bw/day
oral
rat
Multigeneration Reproductive
COSMOS_DB
NOAEL
1319 mg/kg bw/day
oral
rat
Carcinogenicity
COSMOS_DB
NOAEL
1500 mg/kg bw/day
oral
rat
Chronic
COSMOS_DB
NOAEL
2500 mg/kg bw/day
oral
rat
Chronic
COSMOS_DB
NOAEL
=50 mg/kg bw/day
oral
Human; Rat
Reproductive toxicity
INCHEM_WHO_jecfa_jecmono_v75je01
NOAEL
=50 mg/kg bw/day
oral
Human; Rat
Reproductive toxicity
INCHEM_WHO_jecfa_jecmono_v75je01
NOAEL
=50 mg/kg bw/day
oral
Human; Rat
Reproductive toxicity
INCHEM_WHO_jecfa_jecmono_v75je01
NOAEL
=200 mg/kg bw/day
-
-
Toxicology study
INCHEM_WHO_jecfa_jecmono_v75je01
Pre-Calculated Safety Assessment
Pre-calculated NOAEL → SED → MoS audit trail for CI 42090 (Brilliant Blue FCF) across SCCS product categories, with measured dermal absorption where available.
EPA ToxValDB — Toxicity Values
10 toxicity values from EPA ToxValDB (aggregated from CCTE, HPV, ToxRefDB, IRIS, and other regulatory dossiers).
Endpoint
Value
Species
Route
Duration
Source
ADI
<=6 mg/kg
Human
oral
-
WHO JECFA ADI
NOAEL
=631 mg/kg-day
Rat
oral
-
EFSA
NOAEL
=631 mg/kg-day
Rat
oral
chronic
EFSA
NOEL
=2000 mg/kg-day
Mouse
oral
acute
ECOTOX
NOEL
=2 % diet
Mouse
oral
chronic
ECOTOX
NOEL
=2 % diet
Mouse
oral
chronic
ECOTOX
NOEL
=1 % diet
Rat
oral
chronic
ECOTOX
NOEL
=2 % diet
Rat
oral
chronic
ECOTOX
LOEL
=5 %
Rat
oral
short-term
ECOTOX
NOEL
=5 %
Rat
oral
short-term
ECOTOX
IARC Carcinogenicity
International Agency for Research on Cancer (WHO) monograph evaluation.
IARC Group
3
Volume
16, Sup 7
Evaluation Year
1987
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
100 - 1,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Expanded Jurisdictional Detail
Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.
Additional Jurisdictional Restrictions (3)
Jurisdiction
Status
Max %
Product Type
BR
permitted_colorant
-
Column 2: All products except eye area
ASEAN
restricted
0.5%
Non-oxidative hair dye products only
ASEAN
permitted_colorant
-
All products (0.5% limit in non-oxidative hair dye — Annex III)
Typical Use Concentrations
Reported concentration ranges per product category from SCCS/CIR/industry sources.
Product Category
Typical Range
Max Reported
Source
Shampoo
0.001–0.1
0.5
CIR/VCRP
Additional Ingredient Properties
2 property records from structured ingredient metadata.
colorant
{"Common_Name": "FD&C Blue No. 1", "Chemical_Name": "Brilliant Blue FCF", "CAS_Number": "3844-45-9", "Colorant_Type": "Synthetic Dye", "Approved_Uses": "All cosmetics", "Max_Concentration_%": "No limit", "EU_Status": "Approved", "US_FDA_Status": "Approved 21 CFR 74.101", "Notes": "Water-soluble, good stability"}
EU Regulated in Personal CareEU Restricted for Children (Cosmetics)IFRA Fragrance Transparency ListEPA Safer Chemical Ingredients List (SCIL)FDA Substances Added to Food (EAFUS)
Expert Verdict
Expert safety assessment and concern-level summary for CI 42090 (Brilliant Blue FCF).
FD & C Blue No. 1 (Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo-, inner salt, disodium salt)Aizen Food Blue No. 2Brilliant Blue FCF SupraCanacert Brilliant Blue FCFCosmetic Blue LakeEINECS 223-339-8FD & C Blue No. 1FDC Blue No. 1Fenazo Blue XIFood Blue Dye No. 1Hexacol Brilliant Blue AIntracid Pure Blue LJapan Blue 1Japan Blue No. 1Merantine Blue EGUsacert Blue No. 1Usacert FD and C Blue No. 1Modr Brilantni FCFModr Kysela 9Modr Potravinarska 2
Chemical Function
Dye
Regulatory Lists
Europe; Personal care - hair coloringEurope; Personal care - hair coloringIFRA Transparencyinert_ingredient; non_food_use; Pesticideschildren; Europe; Personal carechildren; Europe; Personal care - specialized bath products - bath saltschildren; Europe; Personal care - body hygiene - body washchildren; Europe; Personal care - hair styling and care - shampoochildren; Europe; Personal care - specialized bath products - bubble bathchildren; Europe; Personal care - dental care - toothpastechildren; Europe; Personal carechildren; Europe; Personal careEurope; Personal careEurope; Personal careArts and crafts/Office supplies - body paint - tattoo ink; Europegeneral_foodspharmaceuticalPersonal care
Australian Status
AICIS status:listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCEChEMBL / DrugCentral / FAERSDB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
Is CI 42090 (Brilliant Blue FCF) safe in cosmetics?
CI 42090 (Brilliant Blue FCF) has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted. 10 toxicological study endpoint(s) are available in our database.
Is CI 42090 (Brilliant Blue FCF) allowed in the EU?
CI 42090 (Brilliant Blue FCF) EU regulatory status: permitted. Maximum allowed concentration: 0.5% (hair dye use; no limit as general colorant under Annex IV Part 1). This is based on EU Regulation 1223/2009 and its amendments.
What does CI 42090 (Brilliant Blue FCF) do in cosmetics?
CI 42090 (Brilliant Blue FCF) functions as: Colorant, Hair Dyeing Agent. It is classified as a Colorant in our database. CAS number: 3844-45-9.
What is the NOAEL for CI 42090 (Brilliant Blue FCF)?
The NOAEL (No Observed Adverse Effect Level) for CI 42090 (Brilliant Blue FCF) is 200 mg/kg bw/day based on a Developmental study via oral route in rabbit. A total of 10 study endpoints are available. Source: COSMOS_DB.
Is CI 42090 (Brilliant Blue FCF) used outside cosmetics?
CI 42090 (Brilliant Blue FCF) 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.
Compliance Tools
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