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CAS 1 record

CAS 12270-13-2

CAS 12270-13-2 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

Chemical identity and properties

PubChem 2D chemical structure for CAS 12270-13-2
CAS 12270-13-2PubChem CID 83008

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

C.I. Basic Blue 41CI Basic Blue 411ECX0J387PANILAN BLUE GRLBB41 dyeBASACRYL BLUE X 3GLBenzothiazolium, 2-(2-(4-(ethyl(2-hydroxyethyl)amino)phenyl)diazenyl)-6-methoxy-3-methyl-, methyl sulfate (1:1)RefChem:116612
16 more reported names
235-546-0Basic BlueC.I.Basic Blue 41Benzothiazolium, 2-((4-(ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methyl-, methyl sulfate (salt)UNII-1ECX0J387PBasicBlueC20H26N4O6S2EINECS 235-546-0Basic Blue 41. tech.Basic blue 41 - TechnicalMHOFGBJTSNWTDT-UHFFFAOYSA-MHY-D0492Basic Blue 41, Dye content 40 %CI 11154Ethanol, 2-(ethyl(4-((6-methoxy-3-methyl-2-benzothiazolium)azo)phenyl)amino)-, methyl sulfateCS-0010584
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match83008

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
SourceResultChecked
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 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 12270-13-2

1 total

How CAS 12270-13-2 is used on this site

CAS 12270-13-2 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares 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 12270-13-2 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.

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A substance identified by CAS 12270-13-2 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.

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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.

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