Acenaphthylene

CAS Number
208-96-8
EC Number
205-917-1

What is Acenaphthylene?

Acenaphthylene (CAS 208-96-8) is a polycyclic aromatic hydrocarbon used as a chemical intermediate and building block in specialty synthesis.

Where is Acenaphthylene used?

  • Pharmaceutical and fine chemical manufacturing: precursor to complex organic compounds
  • Pharmaceutical research: rigid aromatic scaffold for bioactive molecules and drug candidates requiring fused-ring architecture
  • Catalyst precursor in transition-metal-catalyzed reactions
  • Ligand design and coordination chemistry, supported by its conjugated ring system
  • Specialty chemicals: intermediate for dyes, pigments and other polycyclic aromatic derivatives
  • Reference standards and analytical calibration materials for environmental and forensic testing
  • It is supplied primarily as a solid crystalline material.

Commercial specifications

  • Purity typically 95% to 99%+ for laboratory and synthesis applications
  • Packaging in small quantities suited to specialty and research procurement
  • Larger lot sizes on request from bulk chemical distributors

Other Names (Synonyms)

cyclopenta[de]naphthalene|1Z25C36811

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What are the physical properties of Acenaphthylene?

Melting Point 92-93 °C
Boiling Point 265-275 °C
Density 0.8988 g/cm³ @ Temp: 16 °C
Flash Point 122°C
Appearance yellow crystalline powder
Color Yellow
Form neat
Water Solubility 3.93mg/L(25 ºC)
Vapor Pressure 6.68 at 25 °C (gas saturation-HPLC/UV spectrophotometry, Sonnefeld et al., 1983)
Refractive Index 1.6360 (estimate)

How is Acenaphthylene classified and handled safely? Learn More

Danger
GHS06· Toxic GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard

Hazard Statements

H302 Harmful if swallowed
H310 Fatal in contact with skin
H315 Causes skin irritation
H319 Causes serious eye irritation

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.

Which trade and regulatory codes apply to Acenaphthylene?

HS Code 29029090
UN Number 1145
ADR Class 3
Packing Group II
WGK (Germany) 3
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