2,3-Dichlorothiophene

  • Thiophene, 2,3-dichloro-
Formula
C4H2Cl2S
Structure
Description
Clear slightly purple liquid

Registry Numbers and Inventories.
CAS
17249-79-5
R 20/21/22
S 23 36/37
UN (DOT)
2810
Merck
 
Beilstein/Gmelin
1760
Beilstein Reference
5-17-01-00304

Properties.
Formula
C4H2Cl2S
Formula mass
153.03
Melting point, °C
-26.2
Boiling point, °C
169 - 170
Density
1.4605 g/cm3 (20 C)
Solubility in water
<0.2 g/L
Refractive index
1.5728 (20 C)

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use. Refrigerator (approx 4 C).
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, while using/wearing the proper protective equipment.
Stability
Stable under normal temperatures and pressures.
Decomposition
Hydrogen chloride, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, hydrogen sulfide.

Fire.
Flash Point,°C
78
Fire fighting
Wear approved SCBA in full pressure-demand and full protective gear. Extinguish fire using water, dry chemical, chemical foam, or alcohol-resistant foam.

Health.
Exposure effects
Irritating to eyes, respiratory system and skin. The toxicological properties of this material have not been investigated. Use appropriate procedures to prevent opportunities for direct contact with the skin or eyes and to prevent inhalation.

First aid
 
   Ingestion
Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.
   Inhalation
Remove from exposure to fresh air immediately.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids.

Transport.
UN number
2810
Response guide