9-Phenanthrenecarboxylic acid

  • 9-Phenanthroic acid
Formula
C15H10O2
Structure

Registry Numbers and Inventories.
CAS
837-45-6
Beilstein Reference
4-09-00-02674

Properties.
Formula
C15H10O2
Formula mass
222.24
Melting point, °C
251 - 252
Boiling point, °C
435
Vapor pressure, mmHg
2.4E-8 (25 C)
Density
1.31 g/cm3 (20 C)
Solubility in water
10 mg/L (25 C)
pKa/pKb
3.68 (pKa)
Partition coefficient, pKow
4.36
Heat of vaporization
72.90 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
194
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
0
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
May be harmful by inhalation, ingestion, or skin absorption. May cause irritation. Causes spasms of the extremities, usually triggered by exertion similar to the clinical symptoms in myotonia congenita (Thomsen’s disease). The typical myotonic symptoms were produced in mice by intraperitoneal injection of the acid in 0.25% methylcellulose solution and consisted of a temporary rigid extension of the hind leg when the animal is disturbed. At higher doses, these extensor spasms may occur continuously. See R.B. Moffett and A.H. Tang, J. Med. Chem., 1968, 11, 1020.

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.