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Dye intermediates

2-Naphthylamine

Also known as 2-Aminonaphthalene, naphthalen-2-amine, 2-Naphthalenamine

CAS 91-59-8Formula C10H9NMolar mass 143.19 g/molEC 202-080-4
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 73 suppliers listed
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2-Naphthylamine chemical structure, C10H9N, CAS 91-59-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals which darken in air to a reddish-purple color
Melting point
111 to 113
Boiling point
306 °C
Density
1.061 g/cm³
Flash point
157 °C
HS code
292145
Category
Dye intermediates
UN number
UN 1650
Illustrative photo, colourless crystals in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is 2-Naphthylamine?

Plain description, key identifiers and synonyms

2-naphthylamine is a naphthylamine carrying the amino group at position 2. It has a role as a carcinogenic agent.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
naphthalen-2-amine
CAS number
91-59-8 CAS number cross-checked
EC number
202-080-4
Molecular formula
C10H9N
UNII
CKR7XL41N4
MDL number
MFCD00004112
InChIKey
JBIJLHTVPXGSAM-UHFFFAOYSA-N
InChI
InChI=1S/C10H9N/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7H,11H2
SMILES (canonical and isomeric)
C1=CC=C2C=C(C=CC2=C1)N

Synonyms

  • 2-Aminonaphthalene
  • naphthalen-2-amine
  • 2-Naphthalenamine
  • beta-Naphthylamine
  • 6-Naphthylamine
  • beta-Naftilamina
  • 2-Naphthalamine
  • 2-Naphthylamin
  • Fast Scarlet Base B
  • 2-Aminonaftalen
  • 2-Naftylamine
  • beta-Naphthylamin
  • 2-Naftylamin
  • beta-Naftalamin
  • beta-Naftylamin
  • Naphthalen-2-ylamine
  • 2-naftilamina
  • beta-naftyloamina
  • RCRA waste number U168
  • USAF CB-22
  • 2-Naphthylamine mustard
  • C.I. 37270
  • CI 37270
  • 2 Naphthylamine
  • beta Naphthylamine
Show all 31 synonyms
  • 2 Aminonaphthalene
  • 2-Naphtylamine
  • B-naphthylamine isopac
  • BNA
  • naphthalene, 2-amino-
  • Dapoxetine Impurity 24

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

Appearance
Colorless crystals which darken in air to a reddish-purple colorexp.
Odour
Faint aromatic odorexp.
Melting point
111 to 113exp.
Boiling point
306 °Cexp.
Density
1.061 g/cm³exp.
Flash point
157 °Cexp.
Solubility
In water, 6.40 mg/L @ 18 °Cexp.
Vapour pressure
2.56 × 10⁻⁴ mm Hg @ 25 °Cexp.

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
143.19 g/molcalc.
Exact mass
143.0735 Dacalc.
LogP (octanol/water)
2.42calc.
Topological polar surface area
26.02 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
11calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
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
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H350May cause cancer.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • P203Obtain, read and follow all safety instructions before use.
  • P264Wash skin thoroughly after handling.
  • 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 + P317If swallowed: Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1650
Transport hazard class
6.1
Packing group
II

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

2-Naphthylamine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 73 suppliers
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Where suppliers are based

73 suppliers in 14 countries

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2-Naphthylamine 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

Formerly in manufacture of dyes, as antioxidant in rubber.

Chemical intermediate for dyes (SRP60:Former use).

Chemical intermediate for rubber antioxidants (SRP60:Former use).

Used to produce 2-chloronaphthalene. (SRP60:Former use).

Research chemical.

Pharmacological actions

  • Carcinogens

Roles

  • aetiopathogenetic role
  • carcinogenic agent

Pharmacology

2-Naphthylamine is a synthetic, air-sensitive, colorless crystalline solid that is soluble in hot water, alcohol, ether and many organic solvents. Currently, it is only used in laboratory research. Because the commercial production and use of 2-naphthylamine are banned, the potential for human exposure is low. The general population may be exposed to this chemical through inhalation of emissions from sources where nitrogen-containing organic matter is burned, such as coal furnaces and cigarettes.

Read more

At greatest risk of occupational exposure to 2-naphthylamine are laboratory technicians and scientists who use it in research. Acute inhalation exposure to high levels of 2-naphthylamine can result in methemoglobinemia, dyspnea, ataxia, hematuria, dysuria and hemorrhagic cystitis. It is known to be a human carcinogen. (NCI05)

How it is made

Prepared by heating beta-naphthol with ammonium sulfite and NH4OH at 150 °C.

Reaction of 2-naphthol with ammonia and ammonium sulphite (former method)

Can be made by the Bucherer reaction starting with 2-naphthalenol.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 612-022-00-3

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: 1- and 2-Naphthylamines and their salts, Ref no: 242, Annex ref: II/242

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Naphthylamine is traded under.

HS 2921.45Exact HS code

1-Naphthylamine (α-naphthylamine), 2-naphthylamine (β-naphthylamine) and their…

World exports in 2024
$58.2M
+12.9% vs 2023, imports $75.3M
2019 to 2024
Top exporters
  1. China61.3%
  2. India * partner reported25.6%
  3. United States5.8%
Top importers
  1. India * partner reported31.1%
  2. Japan15.8%
  3. South Korea13.5%

* Partner reported figures, a lower bound.

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

The HS code shown for 2-Naphthylamine is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Naphthylamine, based on the data on this page

What is 2-Naphthylamine?

2-naphthylamine is a naphthylamine carrying the amino group at position 2. It has a role as a carcinogenic agent.

What is the CAS number of 2-Naphthylamine?

The CAS registry number of 2-Naphthylamine is 91-59-8.

What is the molecular formula and weight of 2-Naphthylamine?

The molecular formula of 2-Naphthylamine is C10H9N and its molar mass is 143.19 g/mol.

What is 2-Naphthylamine used for?

Formerly in manufacture of dyes, as antioxidant in rubber. Chemical intermediate for dyes (SRP60:Former use). Chemical intermediate for rubber antioxidants (SRP60:Former use). Used to produce 2-chloronaphthalene. (SRP60:Former use). Research chemical.

Is 2-Naphthylamine hazardous?

2-Naphthylamine carries the GHS signal word "Danger". Main hazards: harmful if swallowed, may cause cancer, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Naphthylamine?

2-Naphthylamine is usually classified under HS code 292145 (1-Naphthylamine (α-naphthylamine), 2-naphthylamine (β-naphthylamine) and their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Naphthylamine?

CompoundList lists 73 suppliers of 2-Naphthylamine in China, United States, India, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Naphthylamine in India?

4 suppliers in India list 2-Naphthylamine on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Naphthylamine?

Suppliers quote 2-Naphthylamine 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 2-Naphthylamine

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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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