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Description

Acenaphthylene · CAS 208-96-8 · C12H8. UNII 1Z25C36811. Boiling Point: 509 to 527 °F at 760 mmHg (NTP, 1992); Boiling Point: 280 °C; Boiling Point: 275 °C @760 [mm Hg].

Identification

CAS Registry Number	208-96-8
PubChem CID	9161
Molecular formula	C12H8
IUPAC name	acenaphthylene
UNII (FDA)	1Z25C36811

Computed Descriptors

Molecular Weight	152.19
XLogP3	3.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	152.062600255
Monoisotopic Mass	152.062600255
Topological Polar Surface Area	0
Heavy Atom Count	12
Formal Charge	0

Physical & Chemical Properties

Boiling Point	509 to 527 °F at 760 mmHg (NTP, 1992)
Boiling Point	280 °C
Boiling Point	275 °C @760 [mm Hg]
Melting Point	200.3 to 202.1 °F (NTP, 1992)
Melting Point	89.4 °C
Melting Point	92 °C
Flash Point	122.0 °C (251.6 °F) - closed cup
Solubility	In water, 3.93 mg/L at 25 °C
Density	0.8987 g/cu cm at 16 °C
Density	1.05 @ 20°C

Physical description & handling notes

• Acenaphthylene is a colorless crystalline solid. Insoluble in water. Used in dye synthesis, insecticides, fungicides, and in the manufacture of plastics.
• Colorless solid; [CAMEO] Light brown powder; [Alfa Aesar MSDS]
• Yellow needles
• Colorless crystalline solid
• Prisms from ether and plates from alcohol
• Insoluble (NTP, 1992)

Regulatory Status

GHS notification summary	4.8% (1 / 21)

GHS Hazard Classification

GHS notification summary	4.8% (1 / 21)
Reported hazard statements	H302 (23.8%), H310 (71.4%), H315 (23.8%), H319 (23.8%), H330 (71.4%), H335 (19%), H372, H373

Documented Uses

• Used in insecticides and fungicides and in the manufacture of dyes and plastics; [CAMEO] Present in crude oil and coal tar; Produced during combustion (including natural fires), petroleum refining, and coal tar distillation; Has been detected in the atmosphere of a lumber creosote impregnation plant, at the coal preparation area of a solvent refined coal pilot plant, in an aluminum plant, and in smokehouses; [HSDB] Used as an intermediate for resins; [INCHEM EHC]
• Aluminum Producing [Category: Industry]
• Petroleum Production and Refining [Category: Industry]
• Applying Wood Preservatives [Category: Other]
• Acenaphthylene has been used to investigate the photodimerization of acenaphthylene in micellar and hydrogel media.
• PAHs are released into the environment via the combustion of fossil fuels, coke oven emissions and vehicle exhausts, as well as naturally from forest fires and vocanic eruptions. PAHs from these sources may contaminate nearly water systems. They are also found in coal tar and charbroiled food. (L10)

Synonyms

ACENAPHTHYLENE; 208-96-8; Acenaphthalene; Cyclopenta[de]naphthalene; Cyclopenta(de)naphthalene; DTXSID3023845; NSC-59821; DTXCID103845; CHEBI:33081; 1Z25C36811; RefChem:551467; 205-917-1; POLYACENAPHTHYLENE; acenapthylene; 25036-01-5; HSDB 2661

Frequently Asked Questions

What are the CAS number and molecular formula of Acenaphthylene?

CAS 208-96-8; molecular formula C12H8; molecular weight — g/mol.

What other names is Acenaphthylene known by?

ACENAPHTHYLENE, 208-96-8, Acenaphthalene, Cyclopenta[de]naphthalene, Cyclopenta(de)naphthalene, DTXSID3023845.

Is Acenaphthylene classified as hazardous?

4.8% of GHS notifications report no hazard classification (1 of 21).

What are the key physical properties of Acenaphthylene?

Boiling Point: 509 to 527 °F at 760 mmHg (NTP, 1992); Boiling Point: 280 °C; Boiling Point: 275 °C @760 [mm Hg]; Melting Point: 200.3 to 202.1 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.