CompoundList
Sign in
Aromatics

Acenaphthene

Also known as 1,2-Dihydroacenaphthylene, 1,8-Ethylenenaphthalene, peri-Ethylenenaphthalene

CAS 83-32-9Formula C12H10Molar mass 154.21 g/molEC 201-469-6
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 44 suppliers listed
Get quotes Compare 44 suppliers
Acenaphthene chemical structure, C12H10, CAS 83-32-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White needles
Melting point
93 °C
Boiling point
277.5 °C
Density
1.222 g/cm³ at 20 °C
Flash point
125 °C
HS code
290290
Category
Aromatics
UN number
UN 3082
Illustrative photo, colourless crystals beside an amber glass bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Acenaphthene?

Plain description, key identifiers and synonyms

Acenaphthene is a polycyclic aromatic hydrocarbon derived from naphthalene by the addition of an ethylene bridge connecting C-1 and C-8.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,2-dihydroacenaphthylene
CAS number
83-32-9 CAS number cross-checked
EC number
201-469-6
Molecular formula
C12H10
UNII
V8UT1GAC5Y
MDL number
MFCD00003807
InChIKey
CWRYPZZKDGJXCA-UHFFFAOYSA-N
InChI
InChI=1S/C12H10/c1-3-9-4-2-6-11-8-7-10(5-1)12(9)11/h1-6H,7-8H2
SMILES (canonical and isomeric)
C1CC2=CC=CC3=C2C1=CC=C3

Synonyms

  • 1,2-Dihydroacenaphthylene
  • 1,8-Ethylenenaphthalene
  • peri-Ethylenenaphthalene
  • Naphthyleneethylene
  • Acenaphthylene, 1,2-dihydro-
  • Ethylenenaphthalene
  • 1,8-Dihydroacenaphthalene
  • Periethylenenaphthalene
  • 1,8-Dihydroacenaphthylene
  • acenapthene
  • Acenaphthene (1,2-Dihydro Acenaphthylene)
  • Acenaphthene, 1,2-Dihydroacenaphthylene, peri-Ethylenenaphthalene, 1,8-Ethylenenaphthalene
  • Acenaphthene, 97%
  • Acenaphthene, 99%
  • Acenaphthene,
  • 1,2-dihydro-acenaphthylene
  • Naphthalene, 1,8-ethylene-
  • Acenaphthene, analytical standard
  • Acenaphthene 10 microg/mL in Acetonitrile
  • Acenaphthene 100 microg/mL in Acetonitrile
  • Acenaphthene Zone Refined (number of passes:30)
  • 07C - Polycyclic Aromatic Hydrocarbons (2 Spikes)
  • 19C - Polycyclic Aromatic Hydrocarbons (2 Spikes)
  • Acenaphthene, certified reference material, TraceCERT(R)

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
White needlesexp.
Melting point
93 °Cexp.
Boiling point
277.5 °Cexp.
Density
1.222 g/cm³ at 20 °Cexp.
Flash point
125 °Cexp.
Autoignition temperature
>450exp.
Solubility
In water, 3.90 mg/L at 25 °Cexp.
Vapour pressure
0.0022 mm Hg at 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
154.21 g/molcalc.
Exact mass
154.0783 Dacalc.
LogP (octanol/water)
2.94calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.17calc.
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, c1cc2c3c(cccc3c1)CC2

c1cc2c3c(cccc3c1)CC2

3 rings, 12 atoms. This chemical is the scaffold itself.

250 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
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3082
Transport hazard class
9
Packing group
III

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

Acenaphthene suppliers

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

All 44 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

44 suppliers in 12 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Acenaphthene price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Dye intermediate, manufacturing plastics, insecticide, fungicide.

Pharmaceuticals.

Functional uses

  • Dye

How it is made

High-temperature coal tars contain on average 0.3% of acenaphthene. It is also formed during coal tar distillation through hydrogenation of acenaphthalene. Acenaphthene is concentrated to ca. 25% in the coal tar fraction boiling between 230 and 290 °C (wash oil) with about 7% recovery rate from continuous tar distillation. The crystallizable acenaphthene fraction (bp ca. 270-275 °C) is obtained from the wash oil by redistillation. Alternatively, it can be removed directly during primary tar distillation.

Read more

Technical acenaphthene (95-99%) is produced by crystallization in agitated coolers and centrifuges or by continuous countercurrent crystallization. The pure compound is obtained by further distillation and recrystallization.

By passing ethylene and benzene or naphthalene through a red hot tube. ... By heating tetrahydroacenaphthene with sulfur to 180 °C. ... From acenaphthenone or acenaphthenequinone by high pressure hydrogenation in decalin with nickel at 180-240 °C. ... From acenaphthenone oxime.

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Acenaphthene is traded under.

HS 2902.90Indicative HS code

Cyclic hydrocarbons, other

World exports in 2024
$612M
−6.1% vs 2023, imports $670M
2019 to 2024
Top exporters
  1. China28.0%
  2. Germany13.9%
  3. India * partner reported12.6%
Top importers
  1. Germany11.1%
  2. United States10.6%
  3. South Korea8.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Acenaphthene, based on the data on this page

What is Acenaphthene?

Acenaphthene is a polycyclic aromatic hydrocarbon derived from naphthalene by the addition of an ethylene bridge connecting C-1 and C-8.

What is the CAS number of Acenaphthene?

The CAS registry number of Acenaphthene is 83-32-9.

What is the molecular formula and weight of Acenaphthene?

The molecular formula of Acenaphthene is C12H10 and its molar mass is 154.21 g/mol.

What is Acenaphthene used for?

Dye intermediate, manufacturing plastics, insecticide, fungicide. Pharmaceuticals.

Is Acenaphthene hazardous?

Acenaphthene carries the GHS signal word "Warning". Main hazards: causes serious eye irritation, very toxic to aquatic life, very 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 Acenaphthene?

Acenaphthene is usually classified under HS code 290290 (Cyclic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Acenaphthene?

CompoundList lists 44 suppliers of Acenaphthene in China, India, United States, Hong Kong and 8 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Acenaphthene in India?

8 suppliers in India list Acenaphthene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Acenaphthene?

Suppliers quote Acenaphthene 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 Acenaphthene

Get quotes for Acenaphthene

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Acenaphthene
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Acenaphthene with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/acenaphthene-83-32-9" title="Acenaphthene structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Aromatics or HS code 290290

44 suppliers
Free quotes, contact stays private
Get quotes