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Basic and cationic dyes

Basic Blue 1

Also known as Setoglaucine, C.I. Basic Blue 1, Acronol Brilliant Blue 6G

CAS 3521-06-0Formula C23H24Cl2N2Molar mass 399.37 g/molEC 222-531-9
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant, Hazardous to the environment 5 suppliers listed
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Basic Blue 1 chemical structure, C23H24Cl2N2, CAS 3521-06-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3521-06-0
Formula
C23H24Cl2N2
Molar mass
399.37 g/mol
EC number
222-531-9
HS code
320413
Category
Basic and cationic dyes

What is Basic Blue 1?

Plain description, key identifiers and synonyms

Basic Blue 1 is a chemical substance with the molecular formula C23H24Cl2N2 and a molar mass of 399.37 g/mol. Its CAS registry number is 3521-06-0. The IUPAC name is [4-[(2-chlorophenyl)-[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[4-[(2-chlorophenyl)-[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride
CAS number
3521-06-0 CAS number cross-checked
EC number
222-531-9
Molecular formula
C23H24Cl2N2
UNII
92N74OA24D
MDL number
MFCD00050260
InChIKey
GRPFBMKYXAYEJM-UHFFFAOYSA-M
InChI
InChI=1S/C23H24ClN2.ClH/c1-25(2)19-13-9-17(10-14-19)23(21-7-5-6-8-22(21)24)18-11-15-20(16-12-18)26(3)4;/h5-16H,1-4H3;1H/q+1;/p-1
SMILES (canonical and isomeric)
CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=CC=C3Cl.[Cl-]

Synonyms

  • Setoglaucine
  • C.I. Basic Blue 1
  • Acronol Brilliant Blue 6G
  • C.I. 42025
  • Methanaminium, N-(4-((2-chlorophenyl)(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, chloride
  • Methanaminium, N-(4-((2-chlorophenyl)(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, chloride (1:1)
  • Methanaminium, N-[4-[(2-chlorophenyl)[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride (1:1)
  • Primocyanine 6GX
  • Setoglaucin
  • Setogalucine O
  • Setoglaucine O
  • Astrazon Blue G
  • Azure Blue G
  • Basic Blue G
  • Basic Blue DSC
  • Basic Cyanine 6G
  • Genacryl Blue 6G
  • Lithosol Blue 6G
  • Rhoduline blue 6G
  • Rhoduline Blue CG
  • Basic Blue 6G
  • Brilliant Blue 6G
  • Calcozine Blue 6G
  • Primocyanine 6 GX
  • Rhoduline Blue 6GA
Show all 38 synonyms
  • New Fast Green 3B
  • Sandocryl Blue B-6G
  • Hidaco Basic Blue 6G
  • Hidaco Basic Blue 10G
  • Astra Rhoduline Blue 6G
  • Arlobas Cyanine Blue 6GN
  • Sumitomo Basic Cyanine 6G
  • Mitsui Brilliant Cyanine 6GX
  • Methylene Turquoise JSA Extra
  • Acronol Brilliant Lake Blue 6G
  • Aizen Brilliant Basic Cyanine 6GH
  • N-(4-((2-Chlorophenyl)(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminium chloride
  • (4-((2-Chlorophenyl)(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium chloride

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
399.37 g/molcalc.
Exact mass
398.1317 Dacalc.
LogP (octanol/water)
2.05calc.
Topological polar surface area
6.25 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
3calc.
Heavy atoms
27calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.17calc.
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, [N+]=C1C=CC(=C(c2ccccc2)c2ccccc2)C=C1

[N+]=C1C=CC(=C(c2ccccc2)c2ccccc2)C=C1

3 rings, 20 atoms.

122 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H301Toxic if swallowed.
  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
Precautionary statements (13)
  • 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.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • 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 1 suppliers

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Where suppliers are based

5 suppliers in 1 country

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Basic Blue 1 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

Industries and functions

Regulatory status

Inventories, regulations and trade controls that list this substance

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 1 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 1 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 1, based on the data on this page

What is Basic Blue 1?

Basic Blue 1 is a chemical substance with the molecular formula C23H24Cl2N2 and a molar mass of 399.37 g/mol. Its CAS registry number is 3521-06-0. The IUPAC name is [4-[(2-chlorophenyl)-[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride.

What is the CAS number of Basic Blue 1?

The CAS registry number of Basic Blue 1 is 3521-06-0.

What is the molecular formula and weight of Basic Blue 1?

The molecular formula of Basic Blue 1 is C23H24Cl2N2 and its molar mass is 399.37 g/mol.

What is Basic Blue 1 used for?

Known uses and roles of Basic Blue 1 include textile dyes in textiles and leather.

Is Basic Blue 1 hazardous?

Basic Blue 1 carries the GHS signal word "Danger". Main hazards: toxic if swallowed, causes serious eye irritation, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Basic Blue 1?

Basic Blue 1 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 1?

CompoundList lists 5 suppliers of Basic Blue 1 in India. 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 1 in India?

5 suppliers in India list Basic Blue 1 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 1?

Suppliers quote Basic Blue 1 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 1

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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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