1,25,6-Dibenzanthracene
C22H14
Molecular mass: 278.4
ICSC # 0431
CAS # 53-70-3
RTECS # HN2625000
EC # 601-041-00-2
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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, powder.
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Explosion
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Exposure
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AVOID ALL CONTACT!
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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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Redness.
Swelling. Itching.
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Protective gloves.
Protective clothing.
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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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Redness.
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Face shield
or
eye protection in combination with breathing protection.
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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.
Wash hands before eating.
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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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Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: P3 filter respirator for toxic particles.
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Well closed.
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T symbol
N symbol
R: 45-50/53
S: 53-45-60-61
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALLINE POWDER.
Physical Dangers:
Chemical Dangers:
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the skin
, resulting in photosensitization.
This substance is probably carcinogenic to humans.
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Physical
Properties
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Boiling point: 524°C
Melting point: 267°C
Relative density (water = 1): 1.28
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Solubility in water:
none
Octanol/water partition coefficient as log Pow: 6.5
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Environmental
Data
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Bioaccumulation of this chemical may occur in seafood.
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N O T E S
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This is one of many polycyclic aromatic hydrocarbons - standards are usually established for them as mixtures, e.g., coal tar pitch volatiles. However, it may be encountered as a laboratory chemical in its pure form.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
Do NOT take working clothes home.
DBA is a commonly used name.
This substance is one of many polycyclic aromatic hydrocarbons (PAH).
Card has been partly updated in October 2005. See section EU classification.
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ADDITIONAL INFORMATION
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ICSC: 0431
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DIBENZO(a,h)ANTHRACENE
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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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