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Basic and cationic dyes

Basic Blue 41

Also known as C.I. Basic Blue 41, CI Basic Blue 41, Anilan blue grl

CAS 12270-13-2Formula C20H26N4O6S2Molar mass 482.58 g/molEC 235-546-0
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant, Serious health hazard, Hazardous to the environment 8 suppliers listed
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Basic Blue 41 chemical structure, C20H26N4O6S2, CAS 12270-13-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
12270-13-2
Formula
C20H26N4O6S2
Molar mass
482.58 g/mol
EC number
235-546-0
HS code
320413
Category
Basic and cationic dyes

What is Basic Blue 41?

Plain description, key identifiers and synonyms

Basic Blue 41 is a chemical substance with the molecular formula C20H26N4O6S2 and a molar mass of 482.58 g/mol. Its CAS registry number is 12270-13-2. The IUPAC name is 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol, methyl sulfate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol, methyl sulfate
CAS number
12270-13-2 CAS number cross-checked
EC number
235-546-0
Molecular formula
C20H26N4O6S2
UNII
1ECX0J387P
MDL number
MFCD00013334
INCI name
BASIC BLUE 41
InChIKey
MHOFGBJTSNWTDT-UHFFFAOYSA-M
InChI
InChI=1S/C19H23N4O2S.CH4O4S/c1-4-23(11-12-24)15-7-5-14(6-8-15)20-21-19-22(2)17-10-9-16(25-3)13-18(17)26-19;1-5-6(2,3)4/h5-10,13,24H,4,11-12H2,1-3H3;1H3,(H,2,3,4)/q+1;/p-1
SMILES (canonical and isomeric)
CCN(CCO)C1=CC=C(C=C1)N=NC2=[N+](C3=C(S2)C=C(C=C3)OC)C.COS(=O)(=O)[O-]

Synonyms

  • C.I. Basic Blue 41
  • CI Basic Blue 41
  • Anilan blue grl
  • BB41 dye
  • Basacryl blue x 3gl
  • Benzothiazolium, 2-(2-(4-(ethyl(2-hydroxyethyl)amino)phenyl)diazenyl)-6-methoxy-3-methyl-, methyl sulfate (1:1)
  • Basic Blue
  • C.I.Basic Blue 41
  • basic blue 41 (C.I. 11105)
  • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol, methyl sulfate
  • Benzothiazolium, 2-((4-(ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methyl-, methyl sulfate (salt)
  • BasicBlue
  • Basic Blue 41. tech.
  • Basic blue 41 - Technical
  • Basic Blue 41, Dye content 40 %
  • CI 11154
  • Ethanol, 2-(ethyl(4-((6-methoxy-3-methyl-2-benzothiazolium)azo)phenyl)amino)-, methyl sulfate
  • 2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methylbenzothiazolium methyl sulfate
  • 2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methylbenzothiazolium methyl sulphate
  • 2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)diazenyl)-6-methoxy-3-methylbenzo[d]thiazol-3-ium methyl sulfate
  • 2-({4-[Ethyl(2-hydroxyethyl)amino]phenyl}diazenyl)-6-methoxy-3-methyl-1,3-benzothiazol-3-ium methyl sulfate
  • 2-(ethyl{4-[(6-methoxy-3-methylbenzothiazol-2-yl)diazenyl]phenyl}amino)ethan-1 -ol, methyl hydroxysulfonate
  • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)azo]anilino]ethanol, methyl sulfate
  • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol,methyl sulfate

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
482.58 g/molcalc.
Exact mass
482.1294 Dacalc.
LogP (octanol/water)
3.06calc.
Topological polar surface area
127.7 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
8calc.
Heavy atoms
32calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.35calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(N=Nc2nc3ccccc3s2)cc1

c1ccc(N=Nc2nc3ccccc3s2)cc1

3 rings, 17 atoms.

164 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (28)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Basic Blue 41 suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 8 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

8 suppliers in 3 countries

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Basic Blue 41 price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name BASIC BLUE 41(hair dyeing)

Cosmetic functions

  • Hair dyeing

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl- and its salts, when used as a substance in hair dye products, Ref no:…

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Basic Blue 41 is traded under.

HS 3204.13Indicative HS code

Basic dyes and preparations based thereon

World exports in 2024
$209M
−2.6% vs 2023, imports $224M
2019 to 2024
Top exporters
  1. India * partner reported27.9%
  2. China21.8%
  3. Spain6.6%
Top importers
  1. United States11.2%
  2. China7.9%
  3. Germany7.4%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Basic Blue 41 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Basic Blue 41, based on the data on this page

What is Basic Blue 41?

Basic Blue 41 is a chemical substance with the molecular formula C20H26N4O6S2 and a molar mass of 482.58 g/mol. Its CAS registry number is 12270-13-2. The IUPAC name is 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol, methyl sulfate.

What is the CAS number of Basic Blue 41?

The CAS registry number of Basic Blue 41 is 12270-13-2.

What is the molecular formula and weight of Basic Blue 41?

The molecular formula of Basic Blue 41 is C20H26N4O6S2 and its molar mass is 482.58 g/mol.

What is Basic Blue 41 used for?

Use classes: Cosmetics.

Is Basic Blue 41 hazardous?

Basic Blue 41 carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes severe skin burns and eye damage, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Basic Blue 41?

Basic Blue 41 is usually classified under HS code 320413 (Basic dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Basic Blue 41?

CompoundList lists 8 suppliers of Basic Blue 41 in China, India and United Kingdom. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Basic Blue 41 in India?

3 suppliers in India list Basic Blue 41 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Basic Blue 41?

Suppliers quote Basic Blue 41 on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Basic Blue 41

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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