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Acid and mordant dyes

Sodium 2,4-dinitronaphtholate

Also known as Martius Yellow sodium, 1-Naphthalenol, 2,4-dinitro-, sodium salt, Sodium 2,4-dinitronaphthalen-1-olate

CAS 887-79-6Formula C10H5N2NaO5Molar mass 256.15 g/molEC 212-961-5
GHS signal word: Warning. Pictograms: Harmful or irritant
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Sodium 2,4-dinitronaphtholate chemical structure, C10H5N2NaO5, CAS 887-79-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
887-79-6
Formula
C10H5N2NaO5
Molar mass
256.15 g/mol
EC number
212-961-5
HS code
320412
Category
Acid and mordant dyes

What is Sodium 2,4-dinitronaphtholate?

Plain description, key identifiers and synonyms

Sodium 2,4-dinitronaphtholate is a chemical substance with the molecular formula C10H5N2NaO5 and a molar mass of 256.15 g/mol. Its CAS registry number is 887-79-6. The IUPAC name is sodium 2,4-dinitronaphthalen-1-olate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium 2,4-dinitronaphthalen-1-olate
CAS number
887-79-6 CAS number cross-checked
EC number
212-961-5
Molecular formula
C10H5N2NaO5
UNII
ZYM6EFJ8DM
InChIKey
OESSQZSTPKCQOE-UHFFFAOYSA-M
InChI
InChI=1S/C10H6N2O5.Na/c13-10-7-4-2-1-3-6(7)8(11(14)15)5-9(10)12(16)17;/h1-5,13H;/q;+1/p-1
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=CC(=C2[O-])[N+](=O)[O-])[N+](=O)[O-].[Na+]

Synonyms

  • Martius Yellow sodium
  • 1-Naphthalenol, 2,4-dinitro-, sodium salt
  • Sodium 2,4-dinitronaphthalen-1-olate
  • Allamanda
  • 1-Naphthol, 2,4-dinitro-, sodium salt
  • Pure golden yellow
  • C.i. acid yellow 24
  • 2,4-Dinitro-1-naphthol sodium salt
  • Sodium 2,4-dinitronaphthalene-1-olate
  • Sodium 2,4-dinitro-1-naphtholate
  • 2,4-Dinitro-alpha-naphthol sodium salt
  • 1-Naphthalenol, 2,4-dinitro-, 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
256.15 g/molcalc.
Exact mass
256.0096 Dacalc.
LogP (octanol/water)
-1.27calc.
Topological polar surface area
109.3 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
2calc.
Heavy atoms
18calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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, c1ccc2ccccc2c1

c1ccc2ccccc2c1

2 rings, 10 atoms, the Naphthalene ring system.

17,920 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.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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.
  • P319Get medical help if you feel unwell.
  • 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.
  • 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

Sodium 2,4-dinitronaphtholate suppliers

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Sodium 2,4-dinitronaphtholate 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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Sodium 2,4-dinitronaphtholate 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 Sodium 2,4-dinitronaphtholate is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Sodium 2,4-dinitronaphtholate, based on the data on this page

What is Sodium 2,4-dinitronaphtholate?

Sodium 2,4-dinitronaphtholate is a chemical substance with the molecular formula C10H5N2NaO5 and a molar mass of 256.15 g/mol. Its CAS registry number is 887-79-6. The IUPAC name is sodium 2,4-dinitronaphthalen-1-olate.

What is the CAS number of Sodium 2,4-dinitronaphtholate?

The CAS registry number of Sodium 2,4-dinitronaphtholate is 887-79-6.

What is the molecular formula and weight of Sodium 2,4-dinitronaphtholate?

The molecular formula of Sodium 2,4-dinitronaphtholate is C10H5N2NaO5 and its molar mass is 256.15 g/mol.

What is Sodium 2,4-dinitronaphtholate used for?

Known uses and roles of Sodium 2,4-dinitronaphtholate include textile dyes in textiles and leather.

Is Sodium 2,4-dinitronaphtholate hazardous?

Sodium 2,4-dinitronaphtholate carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sodium 2,4-dinitronaphtholate?

Sodium 2,4-dinitronaphtholate 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 Sodium 2,4-dinitronaphtholate?

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What is the price of Sodium 2,4-dinitronaphtholate?

Suppliers quote Sodium 2,4-dinitronaphtholate 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 Sodium 2,4-dinitronaphtholate

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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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