3-Phenyl-2-propynal

  • Phenylpropiolaldehyde
  • 3-Phenylpropynal
  • Benzenepropiolaldehyde
  • Formylphenylacetylene
  • Phenylpropargylaldehyde
  • Phenylacetylenecarboxaldehyde
Formula
C9H6O
Structure
Description
Clear, deep red liquid.

Registry Numbers and Inventories.
CAS
2579-22-8
EC (EINECS/ELINCS)
219-942-0
36/37/38
UN (DOT)
2810
Beilstein/Gmelin
1099281

Properties.
Formula
C9H6O
Formula mass
130.15
Melting point, °C
139 - 140
Boiling point, °C
246
Vapor pressure, mmHg
0.04 (25 C)
Critical temperature
486
Critical pressure
42.88
Density
1.08 g/cm3 (25 C)
Solubility in water
0.10 g/L (25 C)
Refractive index
1.0640 (20 C)
Partition coefficient, pKow
1.59
Heat of vaporization
46.39 kJ/mol

Hazards and Protection.
Storage
Store at 2 - 8 C. Keep container tightly closed.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Wear self-contained breathing apparatus.
Small spills/leaks
Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Strong oxidizing agents, Strong bases.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
94
Fire fighting
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions.

Health.
Exposure effects
Harmful if swallowed, inhaled, or absorbed through skin. Vapor or mist is irritating to the eyes, mucous membranes, and upper respiratory tract. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
2810
Response guide
Hazard class
6.1
Packing Group
III