Acenaphthene

Catalog	ACM83329-1
CAS	83-32-9
Structure
Category	Environmental Standards
Description	Acenaphthene appears as white needles. Melting point 93.6°C. Soluble in hot alcohol. Denser than water and insoluble in water. Hence sinks in water. May irritate skin and mucous membranes. Emits acrid smoke and irritating fumes when heated to decomposition. Derived from coal tar and used to make dyes, pharmaceuticals, insecticides, fungicides, and plastics.;WHITE-TO-BEIGE CRYSTALS.
Synonyms	1,2-Dihydroacenaphthylene
IUPAC Name	1,2-dihydroacenaphthylene
Molecular Weight	154.21
Molecular Formula	C12H10
Canonical SMILES	C1CC2=CC=CC3=C2C1=CC=C3
InChI	InChI=1S/C12H10/c1-3-9-4-2-6-11-8-7-10(5-1)12(9)11/h1-6H,7-8H2
InChI Key	CWRYPZZKDGJXCA-UHFFFAOYSA-N
Boiling Point	534 °F at 760 mm Hg (NTP, 1992);279.0 °C;277.5 °C;279 °C
Melting Point	203 °F (NTP, 1992);93.4 °C;93 °C;95 °C
Flash Point	125.0 °C (257.0 °F) - closed cup;135 °C o.c.
Density	1.024 at 210 °F (NTP, 1992);1.222 g/cu cm at 20 °C;1.2 g/cm³
Solubility	less than 1 mg/mL at 68° F (NTP, 1992);2.53e-05 M;In water, 3.90 mg/L at 25 °C;In water, 3.57-3.93 mg/L at 22.2 to 25.04 °C (range of 7 values);1 gram dissolves in 31 mL alcohol, 56 mL methanol, 25 ml propanol, 2.5 mL chloroform, 5 mL benzene or toluene;3.2 g/100 mL glacial acetic acid;Solubility in water, g/100ml at 25 °C: 0.0004
Application	Acenaphthene, a colorless or pale yellow crystalline powder, serves multiple purposes, primarily as an intermediate in the production of dyes. This tricyclic aromatic hydrocarbon is also utilized in the manufacturing of certain plastics, as well as in insecticides and fungicides. Although acenaphthene is a solid that does not dissolve in water, it is soluble in a variety of organic solvents. It is naturally found in crude oil and is produced during coal carbonization processes, such as coke production. Emissions from petroleum refining and combustion processes contribute to its presence in the environment, where it is considered a notable pollutant. Acenaphthene, identified as a Priority Pollutant by the U.S. Environmental Protection Agency, is detected in various emissions including those from cigarette smoke, vehicle exhaust, and industrial waste, highlighting its significance from an environmental and industrial perspective.
EC Number	201-469-6
LogP	3.92 (LogP);log Kow = 3.92;3.9/4.5
Refractive Index	Index of refraction: 1.6048 at 95 °C
Stability	Stable under recommended storage conditions.
Vapor Density	5.32 (NTP, 1992) (Relative to Air);5.32 (Air = 1);Relative vapor density (air = 1): 5.3
Vapor Pressure	0.001 to 0.01 mm Hg at 68 °F ; 5 mm Hg at 238.6° F (NTP, 1992);0.00 mmHg;0.0022 mm Hg at 25 °C;Vapor pressure, Pa at 25 °C: 0.3

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