BASIC BLUE 41
2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium methyl sulphate (CI 11154)
BASIC BLUE 41 is linked to 1 EU annex record on this page. Inventory note: II/1261.
Regulatory evidence by market
This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.
Swipe or scroll horizontally to see every column.
| Market | Evidence status | Records | Source language |
|---|---|---|---|
| European Union | Evidence linked Prohibited entry found Open this evidence | 1 | English and EU languages |
| Great Britain | Evidence linked Prohibited Open this evidence | 1 | English |
| Canada | Source mapped Official source mapped; ingredient rule not imported | 0 | English and French |
| New Zealand | Evidence linked Prohibited Open this evidence | 1 | English |
| ASEAN | Evidence linked Prohibited Open this evidence | 1 | English and national languages |
| China | Evidence linked Prohibited Open this evidence | 1 | Chinese with selected English material |
| Japan | Source mapped Official source mapped; ingredient rule not imported | 0 | Japanese; official English translation available |
| South Korea | Evidence linked Prohibited Open this evidence | 1 | Korean with some English names |
| United States | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Australia | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Brazil | Evidence linked Prohibited Open this evidence | 1 | Portuguese with INCI crosswalks |
| India | Evidence linked Prohibited Open this evidence | 1 | English and Hindi |
| Saudi Arabia | Evidence linked Prohibited Open this evidence | 1 | Arabic and English |
Chemical identity and properties
Basic Blue 41
- IUPAC name
- 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol;methyl sulfate
- Molecular formula
- C20H26N4O6S2
- Molecular weight
- 482.6 g/mol
- Exact mass
- 482.12937691 Da
- Topological polar surface area
- 164.0 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 10
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEMBL:CHEMBL259143
- EPA DTXSID:DTXSID3051624
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Note: This chemical does not meet GHS hazard criteria for 1.9% (4 of 208) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H302 (65.4%): Harmful if swallowed [Warning Acute toxicity, oral]; H314 (52.4%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H315 (29.8%): Causes skin irritation [Warning Skin corrosion/irritation]; H318 (52.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H319 (42.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (28.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]; H373 (52.4%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]; H400 (53.4%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410 (53.4%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P363, P391, P403+P233, P405, 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 208 reports by companies from 18 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 4 of 208 reports by companies.; There are 17 notifications provided by 204 of 208 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)
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
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
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 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Inventory details for BASIC BLUE 41
INCI name
BASIC BLUE 41
Description
2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium methyl sulphate (CI 11154)
Record provenance
- Inventory reference
- 32064
- Imported identity
- BASIC BLUE 41
- Source update
- 15/10/2010
Annex records for BASIC BLUE 41
Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl- and its salts, w…
Key data
- HAIR DYEING
- Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, or permanent, depending on the length of time the colorant remains on the hair.
Official EU ingredient-name evidence
The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.
Related inventory evidence
Ingredients with overlapping formulation functions
Additional official and scientific sources
11 external databases to check this identity in
Each link searches that source for this identity. What each source is, and its legal weight
How BASIC BLUE 41 appears in the CosIng inventory
The CosIng inventory lists BASIC BLUE 41 as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.
BASIC BLUE 41 is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.
Frequently asked questions
Source note for BASIC BLUE 41
This page combines the CosIng inventory entry for BASIC BLUE 41 with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.
Use this inventory page to research BASIC BLUE 41 and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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