1,2-Dihydroacenaphthylene
1,8-Ethylenenaphthalene
C12H10
Molecular mass: 154.2
ICSC # 1674
CAS # 83-32-9
RTECS # AB1000000
UN # 3077
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
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NO open flames.
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Water spray.
Dry powder.
Foam.
Carbon dioxide.
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Explosion
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Finely dispersed particles form explosive mixtures in air.
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Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
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Exposure
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See NOTES.
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Safety goggles
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: P2 filter respirator for harmful particles.
Do NOT let this chemical enter the environment.
Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
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Separated from strong oxidants
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Provision to contain effluent from fire extinguishing.
Store in an area without drain or sewer access.
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UN Hazard Class: 9
UN Packing Group: III
Signal: Warning
Enviro
Very toxic to aquatic life with long lasting effects
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Important Data
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Physical State; Appearance:
WHITE TO BEIGE CRYSTALS
Physical Dangers:
Dust explosion possible if in powder or granular form, mixed with air.
Chemical Dangers:
On combustion, forms toxic gases including carbon monoxide.
Reacts
with
strong oxidants
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Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
through the skin
and
by ingestion.
Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly when dispersed
.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
See Notes.
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Physical
Properties
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Boiling point: 279°C
Melting point: 95°C
Density: 1.2
g/cm3
Solubility in water, g/100 ml at 25°C: 0.0004
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Vapour pressure, Pa at 25°C: 0.3
Relative vapour density (air = 1): 5.3
Flash point: 135°C o.c.
Auto-ignition temperature: >450 °C
Octanol/water partition coefficient as log Pow: 3.9 - 4.5
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Environmental
Data
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The substance is very toxic to aquatic organisms.
The substance may cause long-term effects in the aquatic environment.
It is strongly advised that this substance does not enter the environment.
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N O T E S
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Acenaphthene occurs as a pure substance and also as a component of polyaromatic hydrocarbon (PAH) mixtures. Human population studies have associated PAH's exposure with cancer and cardiovascular diseases.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
Transport Emergency Card: TEC (R)-90GM7-III
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ADDITIONAL INFORMATION
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ICSC: 1674
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ACENAPHTHENE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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