Acenaphthene

  • Naphthyleneethylene
  • 1,2-Dihydroacenaphthylene
  • 1,8-Ethylenenaphthalene
Formula
C12H10
Structure
Description
White needles.
Uses
Dye intermediate, manufacture plastics, insecticide, fungicide.

Registry Numbers and Inventories.
CAS
83-32-9
EC (EINECS/ELINCS)
201-469-6
R 36/37/38
RTECS
AB1000000
RTECS class
Mutagen
Merck
13,29
Beilstein/Gmelin
386081
Beilstein Reference
4-05-00-01834
RCRA
K035; K051
EPA OPP
442200
Swiss Giftliste 1
G-1023
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H10
Formula mass
154.21
Melting point, °C
90 - 93
Boiling point, °C
279
Vapor pressure, mmHg
0.007 (25 C)
Vapor density (air=1)
5.32
Odor Threshold Odor threshold 0.08 ppm
Density
1.024 g/cm3 (20 C)
Solubility in water
100 mg/L
Refractive index
1.6048 (95 C)
Partition coefficient, pKow
3.92
Heat of fusion
21.54 kJ/mol
Heat of vaporization
66.1 kJ/mol
Heat of combustion
-6223 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
135
Autoignition, °C
< 450
Upper exp. limit, %
6.7
Lower exp. limit, %
0.8
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
This material is probably combustible.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
1
Exposure effects
In experimental animal studies, PAHs and metabolites cross the placenta. Female offspring of experimental animals exposed to PAHs during pregnancy have a decrease in the number of functional oocytes, sometimes such that they are infertile. <br>PAHs are lipophilic and are excreted in breast milk, allowing for secondary exposure of nursing infants, although the potential significance of such exposure has not been determined.
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. May cause acute vomiting if swallow in large quantities.
   Inhalation
The toxicological properties of this substance have not been fully investigated. Causes upper respiratory tract irritation. Causes irritation of the mucous membrane.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
USCG CHRIS Code
ACJ
 
HS Code
2902 90 80
 
Std. Transport #
4963301