Benz[a]anthracine

  • Benzo(a)anthracene
  • Naphthanthracene
  • 2,3-Benzphenanthrene
  • 1,2-Benzoanthracene
Formula
C18H12
Structure
Description
Colorless leaflets or plates or coarse gold powder with a greenish-yellow fluorescence.
Uses
Research chemical (no evidence of commercial use in usa).

Registry Numbers and Inventories.
CAS
56-55-3
EC (EINECS/ELINCS)
200-280-6
EC Index Number
601-033-00-9
EC Class
Carcinogenic Category 2; Dangerous for the Environment
RTECS
CV9275000
RTECS class
Tumorigen; Mutagen
UN (DOT)
2811
Merck
12,1089
Beilstein/Gmelin
1909298
Beilstein Reference
4-05-00-02549
RCRA
U018
Swiss Giftliste 1
G-3755
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C18H12
Formula mass
228.29
Melting point, °C
153 154
Boiling point, °C
437
Vapor pressure, mmHg
2E-7 (25 C)
Density
1.245 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
5.79
Heat of fusion
22.3 kJ/mol
Heat of vaporization
66.7 kJ/mol
Heat of combustion
-8975 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide, acrid smoke and fumes.

Fire.
Flash Point,°C
209
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This material is probably combustible.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
OSHA: Possible Select carcinogen
Carcinogin
G-A2, I-2A, N-2, CP65
Poison_Class
1*
Exposure effects
May cause cancer according to animal studies.
   Ingestion
May cause kidney damage. May cause digestive tract disturbances.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause 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 immediately.
   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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
BAH