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Reactive dyes

Reactive brown 2

Also known as 1,3,6-Naphthalenetrisulfonic acid, 5-((4-((4-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulfo-1-naphthalenyl)azo)-2,5-dimethylphenyl)azo)-, tetrasodium salt, 5-((4-((4-((4-Amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulfo-1-naphthalenyl)azo)-2,5-dimethylphenyl)azo)-1,3,6-naphthalenetrisulfonic acid, tetrasodium salt, 1,3,6-Naphthalenetrisulfonic acid, 5-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulfo-1-naphthalenyl]azo]-2,5-dimethylphenyl]azo]-, tetrasodium salt

CAS 12236-93-0Formula C31H20ClN9Na4O12S4Molar mass 966.23 g/molEC 274-414-7
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Reactive brown 2 chemical structure, C31H20ClN9Na4O12S4, CAS 12236-93-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
12236-93-0
Formula
C31H20ClN9Na4O12S4
Molar mass
966.23 g/mol
EC number
274-414-7
HS code
320416
Category
Reactive dyes

What is Reactive brown 2?

Plain description, key identifiers and synonyms

Reactive brown 2 is a chemical substance with the molecular formula C31H20ClN9Na4O12S4 and a molar mass of 966.23 g/mol. Its CAS registry number is 12236-93-0. The IUPAC name is tetrasodium, 5-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulfonatonaphthalen-1-yl]diazenyl]-2,5-dimethylphenyl]diazenyl]naphthalene-1,3,6-trisulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tetrasodium, 5-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulfonatonaphthalen-1-yl]diazenyl]-2,5-dimethylphenyl]diazenyl]naphthalene-1,3,6-trisulfonate
CAS number
12236-93-0Other or deprecated CAS: 70210-17-2
EC numbers
274-414-7, 602-662-1
Molecular formula
C31H20ClN9Na4O12S4
InChIKey
JAHOBQDOBYFPTP-UHFFFAOYSA-J
InChI
InChI=1S/C31H24ClN9O12S4.4Na/c1-14-10-25(40-41-28-21-12-17(55(45,46)47)13-27(57(51,52)53)19(21)5-8-26(28)56(48,49)50)15(2)9-24(14)39-38-23-7-6-22(34-31-36-29(32)35-30(33)37-31)18-4-3-16(11-20(18)23)54(42,43)44;;;;/h3-13H,1-2H3,(H,42,43,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H3,33,34,35,36,37);;;;/q;4*+1/p-4
SMILES (canonical and isomeric)
CC1=CC(=C(C=C1N=NC2=C(C=CC3=C2C=C(C=C3S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])C)N=NC4=C5C=C(C=CC5=C(C=C4)NC6=NC(=NC(=N6)N)Cl)S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

Synonyms

  • 1,3,6-Naphthalenetrisulfonic acid, 5-((4-((4-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulfo-1-naphthalenyl)azo)-2,5-dimethylphenyl)azo)-, tetrasodium salt
  • 5-((4-((4-((4-Amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulfo-1-naphthalenyl)azo)-2,5-dimethylphenyl)azo)-1,3,6-naphthalenetrisulfonic acid, tetrasodium salt
  • 1,3,6-Naphthalenetrisulfonic acid, 5-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulfo-1-naphthalenyl]azo]-2,5-dimethylphenyl]azo]-, tetrasodium salt
  • Sodium 5-((4-((4-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulfonatonaphthalen-1-yl)diazenyl)-2,5-dimethylphenyl)diazenyl)naphthalene-1,3,6-trisulfonate
  • Tetrasodium 5-((4-((4-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-7-sulphonato-1-naphthyl)azo)-2,5-dimethylphenyl)azo)naphthalene-1,3,6-trisulphonate

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
966.23 g/molcalc.
Exact mass
964.9394 Dacalc.
LogP (octanol/water)
-6.76calc.
Topological polar surface area
355 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
21calc.
Rotatable bonds
10calc.
Heavy atoms
61calc.
Rings
6calc.
Aromatic rings
6calc.
Fraction sp3 carbons
0.07calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
5calc.
Lipinski rule of five
Fails (2 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, c1ccc2c(N=Nc3ccc(N=Nc4ccc(Nc5ncncn5)c5ccccc45)cc3)cccc2c1

c1ccc2c(N=Nc3ccc(N=Nc4ccc(Nc5ncncn5)c5ccccc45)cc3)cccc2c1

6 rings, 37 atoms.

1 other chemical share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Reactive brown 2 suppliers

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Reactive brown 2 price

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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: Inactive 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 Reactive brown 2 is traded under.

HS 3204.16Indicative HS code

Reactive dyes and preparations based thereon

World exports in 2024
$1.12B
+2.4% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. India * partner reported31.7%
  2. China17.9%
  3. South Korea17.1%
Top importers
  1. Turkey18.4%
  2. China9.4%
  3. Vietnam * partner reported6.6%

* Partner reported figures, a lower bound.

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

The HS code shown for Reactive brown 2 is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Reactive brown 2, based on the data on this page

What is Reactive brown 2?

Reactive brown 2 is a chemical substance with the molecular formula C31H20ClN9Na4O12S4 and a molar mass of 966.23 g/mol. Its CAS registry number is 12236-93-0.

What is the CAS number of Reactive brown 2?

The CAS registry number of Reactive brown 2 is 12236-93-0. Other or deprecated CAS numbers: 70210-17-2.

What is the molecular formula and weight of Reactive brown 2?

The molecular formula of Reactive brown 2 is C31H20ClN9Na4O12S4 and its molar mass is 966.23 g/mol.

What is Reactive brown 2 used for?

Known uses and roles of Reactive brown 2 include textile dyes in textiles and leather.

Is Reactive brown 2 hazardous?

No GHS hazard classification for Reactive brown 2 is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Reactive brown 2?

Reactive brown 2 is usually classified under HS code 320416 (Reactive dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Reactive brown 2?

CompoundList lists 1 supplier of Reactive brown 2 in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Reactive brown 2?

Suppliers quote Reactive brown 2 on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

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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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