Dihydro-2(3H)-thiophenone

  • 2-Oxotetrahydrothiophene
  • 4-Butyrothiolactone
  • 2-Oxothiolane
  • Tetrahydro-2-thiophenone
  • Thiobutyrolactone
  • Thiolan-2-one
Formula
C4H6OS
Structure
Description
Liquid with a stench

Registry Numbers and Inventories.
CAS
1003-10-7
EC (EINECS/ELINCS)
213-700-8
RTECS
XN1930000
RTECS class
Drug
UN (DOT)
3334
Beilstein/Gmelin
105273
Beilstein Reference
5-17-09-00012
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C4H6OS
Formula mass
102.16
Boiling point, °C
197
Vapor pressure, mmHg
0.4 (25 C)
Density
1.175 g/ml (20 C)
Solubility in water
Soluble
Refractive index
1.5241 (20 C)
Heat of vaporization
43.4 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Keep away from heat, sparks, and open flame.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved 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, Strong bases.
Decomposition
Carbon monoxide, Carbon dioxide, Sulfur oxides.

Fire.
Flash Point,°C
86
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.
Fire potential
May burn but does not ignite readily.
Hazards
Combustible liquid. Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure effects
Harmful. Harmful if swallowed. Combustible.
   Ingestion
Harmful if swallowed.
   Inhalation
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
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 skin contact, flush with copious amounts of water for at least 15 minutes. 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
3334
Response guide
Hazard class
9
Packing Group
III