Dibenzo[a,h]anthracene

  • 1,2:5,6-Dibenzanthracene
Formula
C22H14
Structure
Description
White crystals or pale yellow solid. Sublimes.
Uses
Research chemical.

Registry Numbers and Inventories.
CAS
53-70-3
EC (EINECS/ELINCS)
200-181-8
EC Index Number
601-041-00-2
EC Class
Carcinogenic Category 2; Dangerous for the Environment
RTECS
HN2625000
RTECS class
Tumorigen; Mutagen
UN (DOT)
3143
Merck
12,3054
Beilstein/Gmelin
1912414
Beilstein Reference
4-05-00-02722
RCRA
U063
Swiss Giftliste 1
G-4645
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C22H14
Formula mass
278.35
Melting point, °C
266
Boiling point, °C
524
Vapor pressure, mmHg
1E10 (25 C)
Density
1.282 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
6.50
Heat of vaporization
76.9 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. Use with adequate ventilation. 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
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.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
264
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 agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This material is probably combustible.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
0.2 mg/m3 PEL
Carcinogin
I-2A, N-2, CP65
Poison_Class
1*
Exposure effects
May cause cancer in humans.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   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. Wash clothing before reuse. 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.

Transport.
UN number
3143
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
DZA