Chromone

  • 1-Benzopyran-4-one
  • 4H-1-Benzopyran-4-one
  • 4H-Chromen-4-one
  • Benzo-g-pyrone
Formula
C9H6O2
Structure

Registry Numbers and Inventories.
CAS
491-38-3
EC (EINECS/ELINCS)
207-737-9
RTECS
GB7887000
RTECS class
Drug
Beilstein/Gmelin
114087
Beilstein Reference
5-17-10-00139

Properties.
Formula
C9H6O2
Formula mass
146.15
Melting point, °C
56
Boiling point, °C
239
Vapor pressure, mmHg
0.04 (25 C)
Density
1.24 g/cm3 (25 C)
Solubility in water
Slightly soluble
Heat of fusion
17.3 kJ/mol
Heat of vaporization
47.5 kJ/mol
Heat of combustion
-4169 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved respirator.
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.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide.

Fire.
Flash Point,°C
107
Fire fighting
Extinguish using 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
Avoid contact and inhalation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

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.
   Eyes
In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Transport.