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Acid and mordant dyes

Acid Violet 9

Also known as C.I. Acid Violet 9, CI 45190, Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, hydroxide, inner salt, monosodium salt

CAS 6252-76-2Formula C34H26N2NaO6S+Molar mass 613.65 g/molEC 228-377-9
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Acid Violet 9 chemical structure, C34H26N2NaO6S+, CAS 6252-76-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
6252-76-2
Formula
C34H26N2NaO6S+
Molar mass
613.65 g/mol
EC number
228-377-9
HS code
320412
Category
Acid and mordant dyes

What is Acid Violet 9?

Plain description, key identifiers and synonyms

Acid Violet 9 is a chemical substance with the molecular formula C34H26N2NaO6S+ and a molar mass of 613.65 g/mol. Its CAS registry number is 6252-76-2. The IUPAC name is sodium 4-[[9-(2-carboxyphenyl)-6-(2-methylanilino)xanthen-10-ium-3-yl]amino]-3-methylbenzenesulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium 4-[[9-(2-carboxyphenyl)-6-(2-methylanilino)xanthen-10-ium-3-yl]amino]-3-methylbenzenesulfonate
CAS number
6252-76-2 CAS number cross-checked
EC number
228-377-9
Molecular formula
C34H26N2NaO6S+
UNII
824V98947A
INCI name
ACID VIOLET 9, CI 45190
InChIKey
UWMZZSRDUVJJDP-UHFFFAOYSA-N
InChI
InChI=1S/C34H26N2O6S.Na/c1-20-7-3-6-10-29(20)35-22-11-14-27-31(18-22)42-32-19-23(36-30-16-13-24(17-21(30)2)43(39,40)41)12-15-28(32)33(27)25-8-4-5-9-26(25)34(37)38;/h3-19,35-36H,1-2H3,(H-,37,38,39,40,41);/q;+1
SMILES (canonical and isomeric)
CC1=CC=CC=C1NC2=CC3=C(C=C2)C(=C4C=CC(=CC4=[O+]3)NC5=C(C=C(C=C5)S(=O)(=O)[O-])C)C6=CC=CC=C6C(=O)O.[Na+]

Synonyms

  • C.I. Acid Violet 9
  • CI 45190
  • Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, hydroxide, inner salt, monosodium salt
  • 9-(2-Carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)xanthylium, hydroxide, inner salt, monosodium salt
  • Benzoic acid, o-(3-((4-sulfo-o-tolyl)imino)-6-o-toluidino-3H-xanthen-9-yl)-, monosodium salt
  • AKA401
  • 9-(2-Carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf-ophenyl)amino)xanthylium, hydroxide, inner salt, monosodium salt
  • Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf-ophenyl)amino)-, hydroxide, inner salt, monosodium salt
  • Xanthylium, 9-(2-carboxyphenyl)-3-[(2-methylphenyl)amino]-6-[(2-methyl-4-sulfophenyl)amino]-, inner salt
  • Hydrogen 9-(2-carboxylatophenyl)-3-(2-methylanilino)-6-(2-methyl-4-sulphoanilino)xanthylium, monosodium salt
  • 9-(2-Carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf- ophenyl)amino)xanthylium, hydroxide, inner salt, monosodium salt
  • Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf- ophenyl)amino)-, hydroxide, inner salt, monosodium salt
  • Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, inner salt, monosodium salt
  • Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, inner salt, sodium salt (1:1)

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
613.65 g/molcalc.
Exact mass
613.1404 Dacalc.
LogP (octanol/water)
5.24calc.
Topological polar surface area
129.9 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
7calc.
Heavy atoms
44calc.
Rings
6calc.
Aromatic rings
6calc.
Fraction sp3 carbons
0.06calc.
Formal charge
1calc.
Stereocentres
0calc.
Components
2calc.
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, c1ccc(Nc2ccc3c(-c4ccccc4)c4ccc(Nc5ccccc5)cc4[o+]c3c2)cc1

c1ccc(Nc2ccc3c(-c4ccccc4)c4ccc(Nc5ccccc5)cc4[o+]c3c2)cc1

6 rings, 34 atoms.

3 other chemicals 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.

Acid Violet 9 suppliers

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Where suppliers are based

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Acid Violet 9 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 ACID VIOLET 9(hair dyeing)

Functional uses

  • Dye

Cosmetic functions

  • Colorant
  • Hair dyeing

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex IV, allowed colourant
    Name: CI 45190 / ACID VIOLET 9, Ref no: 72, Annex ref: IV/72

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 Acid Violet 9 is traded under.

HS 3204.12Indicative HS code

Acid dyes, whether or not premetallised, and preparations based thereon, mordant dyes…

World exports in 2024
$792M
+6.2% vs 2023, imports $791M
2019 to 2024
Top exporters
  1. India * partner reported34.9%
  2. China9.3%
  3. Germany7.4%
Top importers
  1. China15.3%
  2. Italy8.2%
  3. United States7.3%

* Partner reported figures, a lower bound.

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

The HS code shown for Acid Violet 9 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Acid Violet 9, based on the data on this page

What is Acid Violet 9?

Acid Violet 9 is a chemical substance with the molecular formula C34H26N2NaO6S+ and a molar mass of 613.65 g/mol. Its CAS registry number is 6252-76-2. The IUPAC name is sodium 4-[[9-(2-carboxyphenyl)-6-(2-methylanilino)xanthen-10-ium-3-yl]amino]-3-methylbenzenesulfonate.

What is the CAS number of Acid Violet 9?

The CAS registry number of Acid Violet 9 is 6252-76-2.

What is the molecular formula and weight of Acid Violet 9?

The molecular formula of Acid Violet 9 is C34H26N2NaO6S+ and its molar mass is 613.65 g/mol.

What is Acid Violet 9 used for?

Use classes: Cosmetics.

Is Acid Violet 9 hazardous?

No GHS hazard classification for Acid Violet 9 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 Acid Violet 9?

Acid Violet 9 is usually classified under HS code 320412 (Acid dyes, whether or not premetallised, and preparations based thereon, mordant dyes…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Acid Violet 9?

CompoundList lists 1 supplier of Acid Violet 9 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 Acid Violet 9 in India?

1 supplier in India list Acid Violet 9 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Acid Violet 9?

Suppliers quote Acid Violet 9 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

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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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