CompoundList
Sign in
Aromatics

Acenaphthylene

Also known as Acenaphthalene, Cyclopenta[de]naphthalene, Cyclopenta(de)naphthalene

CAS 208-96-8Formula C12H8Molar mass 152.20 g/molEC 205-917-1
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant 31 suppliers listed
Get quotes Compare 31 suppliers
Acenaphthylene chemical structure, C12H8, CAS 208-96-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow needles
Melting point
89.4 °C
Boiling point
280 °C
Density
0.8987 g/cm³ at 16 °C
Flash point
122 °C
HS code
290290
Category
Aromatics
Illustrative photo, yellow pigment powder in an open fibre drum in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Acenaphthylene?

Plain description, key identifiers and synonyms

Acenaphthylene is a ortho- and peri-fused tricyclic hydrocarbon that occurs in coal tar. It is an ortho- and peri-fused polycyclic arene, a member of acenaphthylenes and an ortho- and peri-fused tricyclic hydrocarbon.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
acenaphthylene
CAS number
208-96-8 CAS number cross-checkedOther or deprecated CAS: 189811-56-1, 25036-01-5, 34493-60-2
EC number
205-917-1
Molecular formula
C12H8
UNII
1Z25C36811
MDL number
MFCD00003806
InChIKey
HXGDTGSAIMULJN-UHFFFAOYSA-N
InChI
InChI=1S/C12H8/c1-3-9-4-2-6-11-8-7-10(5-1)12(9)11/h1-8H
SMILES (canonical and isomeric)
C1=CC2=C3C(=C1)C=CC3=CC=C2

Synonyms

  • Acenaphthalene
  • Cyclopenta[de]naphthalene
  • Cyclopenta(de)naphthalene
  • Polyacenaphthylene
  • acenapthylene
  • Acenaphthylene-2a,3,4,5,5a,8b-13C6
  • acenaphthylen
  • Acenaphthylene, Cyclopenta[de]naphthalene, NSC 59821, acenaphthyene
  • Acenaphthylene, radical ion(1-)
  • Acenaphthylene, 75%
  • Acenaphthylene, 99%
  • Acenaphthylene (Standard)
  • Acenaphthylene standard solution
  • Acenaphthylene, analytical standard
  • Acenaphthylene 10 |Ig/mL in Acetonitrile
  • Acenaphthylene 10 |Ig/mL in Cyclohexane
  • Acenaphthylene 10 microg/mL in Acetonitrile
  • Acenaphthylene 10 microg/mL in Cyclohexane
  • Acenaphthylene 100 |Ig/mL in Acetonitrile
  • Acenaphthylene 100 microg/mL in Acetonitrile
  • Acenaphthylene, 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
Yellow needlesexp.
Melting point
89.4 °Cexp.
Boiling point
280 °Cexp.
Density
0.8987 g/cm³ at 16 °Cexp.
Flash point
122 °Cexp.
Solubility
In water, 3.93 mg/L at 25 °Cexp.
Vapour pressure
0.0048 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
152.20 g/molcalc.
Exact mass
152.0626 Dacalc.
LogP (octanol/water)
3.32calc.
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
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, C1=Cc2cccc3cccc1c23

C1=Cc2cccc3cccc1c23

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

61 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H310Fatal in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H330Fatal if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (25)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P317If swallowed: Get medical help.
  • 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.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • 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

Acenaphthylene suppliers

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

All 31 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

31 suppliers in 6 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

Acenaphthylene 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

Acenaphthylene has been used to investigate the photodimerization of acenaphthylene in micellar and hydrogel media.

How it is made

It can be produced industrially by catalytic gas-phase dehydrogenation of acenaphthene.

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 Acenaphthylene 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 Acenaphthylene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Acenaphthylene?

Acenaphthylene is a ortho- and peri-fused tricyclic hydrocarbon that occurs in coal tar. It is an ortho- and peri-fused polycyclic arene, a member of acenaphthylenes and an ortho- and peri-fused tricyclic hydrocarbon.

What is the CAS number of Acenaphthylene?

The CAS registry number of Acenaphthylene is 208-96-8. Other or deprecated CAS numbers: 189811-56-1, 25036-01-5, 34493-60-2.

What is the molecular formula and weight of Acenaphthylene?

The molecular formula of Acenaphthylene is C12H8 and its molar mass is 152.20 g/mol.

What is Acenaphthylene used for?

Acenaphthylene has been used to investigate the photodimerization of acenaphthylene in micellar and hydrogel media.

Is Acenaphthylene hazardous?

Acenaphthylene carries the GHS signal word "Danger". Main hazards: harmful if swallowed, fatal in contact with skin, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Acenaphthylene?

Acenaphthylene 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 Acenaphthylene?

CompoundList lists 31 suppliers of Acenaphthylene in China, United States, India, Japan and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Acenaphthylene in India?

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

What is the price of Acenaphthylene?

Suppliers quote Acenaphthylene 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 Acenaphthylene

Get quotes for Acenaphthylene

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Acenaphthylene
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 Acenaphthylene 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/acenaphthylene-208-96-8" title="Acenaphthylene 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

31 suppliers
Free quotes, contact stays private
Get quotes