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Direct dyes

Direct Violet 48

Also known as Direct fast violet kmu, (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))dicuprate (2-), disodium salt, Cuprate (2-), (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))di-, disodium salt

CAS 37279-54-2Formula C34H23Cu2N7Na2O14S4Molar mass 1,054.93 g/molEC 253-441-8
GHS signal word: Warning. Pictograms: Harmful or irritant
Get quotes Safety data
Direct Violet 48 chemical structure, C34H23Cu2N7Na2O14S4, CAS 37279-54-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
37279-54-2
Formula
C34H23Cu2N7Na2O14S4
Molar mass
1,054.93 g/mol
EC number
253-441-8
HS code
320414
Category
Direct dyes

What is Direct Violet 48?

Plain description, key identifiers and synonyms

Direct Violet 48 is a chemical substance with the molecular formula C34H23Cu2N7Na2O14S4 and a molar mass of 1,054.93 g/mol. Its CAS registry number is 37279-54-2. The IUPAC name is dicopper, disodium, 3-[[5-(methylsulfamoyl)-2-oxidophenyl]diazenyl]-7-[[6-[[5-(methylsulfamoyl)-2-oxidophenyl]diazenyl]-5-oxido-7-sulfonatonaphthalen-2-yl]amino]-4-oxidonaphthalene-2-sulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dicopper, disodium, 3-[[5-(methylsulfamoyl)-2-oxidophenyl]diazenyl]-7-[[6-[[5-(methylsulfamoyl)-2-oxidophenyl]diazenyl]-5-oxido-7-sulfonatonaphthalen-2-yl]amino]-4-oxidonaphthalene-2-sulfonate
CAS number
37279-54-2 CAS number cross-checked
EC number
253-441-8
Molecular formula
C34H23Cu2N7Na2O14S4
UNII
G9EK8VBD7L
INCI name
DIRECT VIOLET 48
InChIKey
DINKHUYGJKLNQS-UHFFFAOYSA-H
InChI
InChI=1S/C34H29N7O14S4.2Cu.2Na/c1-35-56(46,47)21-5-9-27(42)25(15-21)38-40-31-29(58(50,51)52)13-17-11-19(3-7-23(17)33(31)44)37-20-4-8-24-18(12-20)14-30(59(53,54)55)32(34(24)45)41-39-26-16-22(6-10-28(26)43)57(48,49)36-2;;;;/h3-16,35-37,42-45H,1-2H3,(H,50,51,52)(H,53,54,55);;;;/q;2*+2;2*+1/p-6
SMILES (canonical and isomeric)
CNS(=O)(=O)C1=CC(=C(C=C1)[O-])N=NC2=C(C=C3C=C(C=CC3=C2[O-])NC4=CC5=CC(=C(C(=C5C=C4)[O-])N=NC6=C(C=CC(=C6)S(=O)(=O)NC)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Cu+2].[Cu+2]

Synonyms

  • Direct fast violet kmu
  • (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))dicuprate (2-), disodium salt
  • Cuprate (2-), (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))di-, disodium salt
  • Cuprate(2-), (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))di-, disodium
  • Cuprate(2-), [mu-[[7,7'-iminobis[4-hydroxy-3-[[2-hydroxy-5-[(methylamino)sulfonyl]phenyl]azo]-2-naphthalenesulfonato]](6-)]]di-, disodium
  • CI 29125
  • C.I. 29125
  • (mu-((7,7'-Iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfo- nyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))dicuprate (2-), disodium salt
  • Copper(2+) sodium 7,7'-azanediylbis(3-{(E)-[5-(methylsulfamoyl)-2-oxidophenyl]diazenyl}-4-oxidonaphthalene-2-sulfonate) (2/2/1)
  • Cuprate (2-), (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfo- nyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))di-, disodium salt
  • Disodium (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-(N-methylsulphamoyl)phenyl)azo)naphthalene-2-sulphonato))(6-)))dicuprate(2-)

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
1,054.93 g/molcalc.
Exact mass
1,052.8573 Dacalc.
LogP (octanol/water)
-3.51calc.
Topological polar surface area
360.5 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
19calc.
Rotatable bonds
12calc.
Heavy atoms
63calc.
Rings
6calc.
Aromatic rings
6calc.
Fraction sp3 carbons
0.06calc.
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, c1ccc(N=Nc2ccc3cc(Nc4ccc5cc(N=Nc6ccccc6)ccc5c4)ccc3c2)cc1

c1ccc(N=Nc2ccc3cc(Nc4ccc5cc(N=Nc6ccccc6)ccc5c4)ccc3c2)cc1

6 rings, 37 atoms.

19 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
Precautionary statements (9)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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).
  • 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.

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

Direct Violet 48 suppliers

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Direct Violet 48 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 DIRECT VIOLET 48(hair dyeing)

Functional uses

  • Dye

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: (micro-((7,7'-Iminobis(4-hydroxy-3-((2-hydroxy-5-(N-methylsulphamoyl)phenyl)azo)naphthalene-2-sulphonato))(6-)))dicuprate and its salts, when used as a s…

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 Direct Violet 48 is traded under.

HS 3204.14Indicative HS code

Direct dyes and preparations based thereon

World exports in 2024
$328M
−1.5% vs 2023, imports $336M
2019 to 2024
Top exporters
  1. India * partner reported34.9%
  2. China11.3%
  3. Spain9.0%
Top importers
  1. Italy9.8%
  2. Germany8.7%
  3. Netherlands7.8%

* Partner reported figures, a lower bound.

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

The HS code shown for Direct Violet 48 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Direct Violet 48, based on the data on this page

What is Direct Violet 48?

Direct Violet 48 is a chemical substance with the molecular formula C34H23Cu2N7Na2O14S4 and a molar mass of 1,054.93 g/mol. Its CAS registry number is 37279-54-2.

What is the CAS number of Direct Violet 48?

The CAS registry number of Direct Violet 48 is 37279-54-2.

What is the molecular formula and weight of Direct Violet 48?

The molecular formula of Direct Violet 48 is C34H23Cu2N7Na2O14S4 and its molar mass is 1,054.93 g/mol.

What is Direct Violet 48 used for?

Use classes: Cosmetics.

Is Direct Violet 48 hazardous?

Direct Violet 48 carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Direct Violet 48?

Direct Violet 48 is usually classified under HS code 320414 (Direct dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Direct Violet 48?

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What is the price of Direct Violet 48?

Suppliers quote Direct Violet 48 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 Direct Violet 48

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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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