NOAEL Data REACH Registered Cosmetic Ingredient

C.I. Basic Blue 41

Also known as: 2-[[4-[Ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium methyl sulfate, Benzothiazolium, 2-​[2-​[4-​[ethyl(2-​hydroxyethyl)​amino]​phenyl]​diazenyl]​-​6-​methoxy-​3-​methyl-​, methyl sulfate (1:1), Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl-, methyl sulfate (salt), C.I. 11105, EC No.: 235-546-0 (+15 more)

CAS 12270-13-2

C.I. Basic Blue 41 (CAS 12270-13-2) is a chemical substance. Key regulatory status: REACH registered, 2 regulatory/inventory lists, cosmetic ingredient cross-reference; source data from EPA ToxValDB, EPA CPDat, AICIS, ECHA REACH.

View cosmetic safety profile for Basic Blue 75 →

SOURCE noael studies public
NOAEL studies
5
SOURCE chemical inventory jurisdictions
Regulatory lists
2
SOURCE eu clp annex vi
GHS signal
Not classified

Chemical Identity

CAS, identifiers, formula, and alternate names for the matched substance record.

SOURCE DSSTox identifiers 26 fields
Name
C.I. Basic Blue 41
CAS Number
12270-13-2
DTXSID
DTXSID3051624
Molecular Formula
C19H23N4O2S.CH4O4S
InChI Key
MHOFGBJTSNWTDT-UHFFFAOYSA-M
Monoisotopic Mass
483.137202
Synonyms
2-[[4-[Ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium methyl sulfateBenzothiazolium, 2-​[2-​[4-​[ethyl(2-​hydroxyethyl)​amino]​phenyl]​diazenyl]​-​6-​methoxy-​3-​methyl-​, methyl sulfate (1:1)Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl-, methyl sulfate (salt)C.I. 11105EC No.: 235-546-0EINECS 235-546-0UNII-1ECX0J387PAizen Cathilon Blue GRLHAnilan Blue GRLApollo Cationic Blue GRLAstrazon Blue FGGLBB 41

Regulatory Lists

Inventory, screening, and regulatory list matches from public chemical databases.

SOURCE EPA CPDat 2 records
ListKeywordSource
banned; Europe; Personal careEuropean CommissionCosIng
inert_ingredient; non_food_use; PesticidesEPACPCat

NOAEL Studies

Toxicology endpoints rendered from public NOAEL study rows.

SOURCE NOAEL studies Showing 5 of 5 studies
ValueUnitEndpointRouteSpeciesSource
=0.219mg/m3DNEL systemicinhalationHumanToxValDB_GESTIS_DNEL
1ECX0J387PUNIIFDA UNII substance identifier--openFDA substances
1ECX0J387PUNIIFDA UNII substance identifier--openFDA substances
1ECX0J387PUNIIFDA UNII substance identifier--openFDA substances
1ECX0J387PUNIIFDA UNII substance identifier--openFDA substances

Showing 5 of 5 studies

REACH Registration

Registration status from the ECHA REACH registered substances database.

SOURCE ECHA (EU) 1 records
StatusNameEC NumberLink
Registered2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium methyl sulphate235-546-0ECHA overview →

Australian Status (AICIS)

Australian industrial chemicals inventory status and applicable conditions.

SOURCE AICIS inventory 1 records
Inventory Status
listed

Cosmetic Safety Profile

Same-CAS cosmetic ingredient record for cross-vertical context.

SOURCE CosIng / Ingredients DB
EU Status
permitted
Max
-
Category
Colorant
View full cosmetic safety profile →

Pharmaceutical Data

Same-CAS pharmaceutical records from drug and bioactivity sources.

SOURCE EMBL-EBI ChEMBL BASIC BLUE 41
ChEMBL Phase
Not listed
Adverse Events
0
Bioactivity
1
View full pharmaceutical profile →

Frequently Asked Questions

What is the NOAEL for C.I. Basic Blue 41?

C.I. Basic Blue 41 has 5 NOAEL studies in the database. The lowest reported value is 0.219 mg/m3 via inhalation in Human. Source: ToxValDB_GESTIS_DNEL.

What regulatory lists include C.I. Basic Blue 41?

C.I. Basic Blue 41 appears on 2 regulatory/inventory lists including banned; Europe; Personal care, inert_ingredient; non_food_use; Pesticides. Source: EPA CPDat.

Is C.I. Basic Blue 41 used in cosmetics?

Yes, C.I. Basic Blue 41 is also indexed as a cosmetic ingredient under the name Basic Blue 75. View the full cosmetic safety profile on the ingredient page for detailed safety data, SCCS opinions, and regulatory status.

Where does the safety data for C.I. Basic Blue 41 come from?

Safety data is sourced from EPA ToxValDB, EPA CPDat, AICIS (Australian Industrial Chemicals Introduction Scheme), EPA DSSTox, ECHA REACH, CosIng / Ingredients DB, ChEMBL / DailyMed. All data traces to primary regulatory sources and is updated from official government databases.

Does C.I. Basic Blue 41 have different safety status in cosmetics vs industrial chemicals?

C.I. Basic Blue 41 is classified GHS Danger (H302, H314, H315, H318, H319, H335, H373, H400) in the chemicals database but is allowed in EU cosmetics.

Is C.I. Basic Blue 41 used outside industrial chemicals?

C.I. Basic Blue 41 also appears in cosmetics, pharmaceutical databases.