Acenaphthene

CAS Number
83-32-9
EC Number
201-469-6

What is Acenaphthene?

Acenaphthene (CAS 83-32-9) is a polycyclic aromatic hydrocarbon used as a chemical intermediate and monomer building block in pharmaceutical synthesis and polymer manufacturing.

Where is Acenaphthene used?

  • Pharmaceutical manufacturing: synthetic intermediate
  • Dye and pigment production: starting material for colorants applied in printing inks and packaging coatings
  • Polymer chemistry: monomer or co-monomer in specialty resin systems, where controlled aromatic content influences thermal and mechanical performance
  • Research-scale synthesis: defined polycyclic aromatic building block
  • It serves as a precursor and process chemical where a fused-ring aromatic scaffold is required.

Commercial specifications

  • Technical-grade material for industrial synthesis and higher-purity grades for pharmaceutical intermediate requirements
  • Packaging from kilogram-scale laboratory quantities to bulk drum supply

Other Names (Synonyms)

peri-ethylenenaphthalene|1,2-Dihydroacenaphthylene|1,8-Ethylenenaphthalene|Acenaphthylene, 1,2-dihydro-|1,8-Dihydroacenaphthalene

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What are the physical properties of Acenaphthene?

Melting Point 95 °C
Boiling Point 279 °C @ Press: 760 Torr
Density 1.0242 g/cm³ @ Temp: 90 °C
Flash Point 135 °C
Appearance Acenaphthene is a white combustible, crystalline solid. PAHs are compounds containing multiple benzene rings and are also called polynuclear aromatic hydrocarbons
Color brown-beige
Form crystalline
Water Solubility 0.000347 g/100 mL
Vapor Pressure 10 mm Hg ( 131 °C)
Refractive Index 1.6048
Log P 4.04 at 30℃ and pH5-8

How is Acenaphthene classified and handled safely? Learn More

Warning
GHS07· Irritant GHS09· Environmental Hazard GHS08· Health Hazard

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H350 May cause cancer

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.

Which trade and regulatory codes apply to Acenaphthene?

HS Code 29029080
UN Number 3077
ADR Class 9
Packing Group III
Storage Class 11 - Combustible Solids
WGK (Germany) 3
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