2,3-Dimethylthiophene

Formula
C6H8S
Structure
Description
Colorless liquid.

Registry Numbers and Inventories.
CAS
632-16-6
EC (EINECS/ELINCS)
211-170-2
R: 11 20/21/22
S: 9 16 33 36/37

Properties.
Formula
C6H8S
Formula mass
112.19
Melting point, °C
-49
Boiling point, °C
141.6
Vapor pressure, mmHg
6.4 torr (25 C)
Critical temperature
391
Critical pressure
41.4
Density
1.0021 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5192 (20<sup>o</sup>C)
Partition coefficient, pKow
2.78

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.
Protection
Chemical protective goggles, chemically resistive gloves, protective work clothing.
Respirators
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition. Use a spark-proof tool.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide.

Fire.
Flash Point,°C
1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use dry chemical or foam.
Fire potential
Will burn if involved in a fire. Flammable liquid and vapor.

Health.
Exposure effects
   Ingestion
Harmful if swallowed. May cause irritation of the digestive tract.
   Inhalation
Harmful if inhaled. May cause respiratory tract irritation.
   Skin
May cause irritation. Harmful if absorbed through the skin.
   Eyes
May cause irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.