Thietane dioxide

  • Trimethylene sulfone
  • Thietane, 1,1-dioxide
Formula
C3H6O2S
Structure

Registry Numbers and Inventories.
CAS
5687-92-3
Beilstein Reference
5-17-01-00015

Properties.
Formula
C3H6O2S
Formula mass
106.15
Melting point, °C
-83
Boiling point, °C
76 - 77
Vapor pressure, mmHg
7.1E-10 (25 C)
Critical temperature
246
Critical pressure
49.7
Density
1.368 g/cm3 (20 C)
Solubility in water
6.7 g/L (25 C)
Refractive index
1.5156 (20<sup>o</sup>C)
Partition coefficient, pKow
-0.940
Heat of vaporization
74.68 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type AXBEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.
Small spills/leaks
Absorb on sand or vermiculite and place in closed containers for disposal. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Sulfur oxides.

Fire.
Flash Point,°C
403
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
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
Harmful if swallowed.
   Inhalation
May be harmful if inhaled. Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
Causes 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. 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.