Dimesitylcyclopropenone

  • 2,3-Bis(2,4,6-trimethylphenyl)cyclopropenone
Formula
C21H22O
Structure
Description
Light yellow flakes.

Registry Numbers and Inventories.
CAS
61440-88-8
Beilstein/Gmelin
2508324

Properties.
Formula
C21H22O
Formula mass
290.40
Melting point, °C
195
Boiling point, °C
413
Solubility in water
Insoluble
Partition coefficient, pKow
5.79

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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
Clean up spills immediately, using the appropriate protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
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.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed. Because of the reducing action of pyrogallol, it has a tremendous affinity for the oxygen of the blood. Injection of 0.3 g/kg into a rabbit was a sufficient quantity to unite with all of the blood oxygen, causing the animal's death. Thus, death is initiated by respiratory
   Inhalation
May cause respiratory tract irritation. May be harmful if inhaled.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with 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. 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.