Dibenzothiophene

  • 2,2'-Biphenylylene sulfide
  • 9-Thiafluorene
  • Dibenzo[b,d]thiophene
  • Diphenylene sulfide
  • [1,1'-Biphenyl]-2,2'-diyl sulfide
Formula
C12H8S
Structure
Description
Yellow to green solid.

Registry Numbers and Inventories.
CAS
132-65-0
EC (EINECS/ELINCS)
205-072-9
S 22 36/37
RTECS
HQ3490550
RTECS class
Other
Beilstein/Gmelin
121101
Beilstein Reference
5-17-02-00239
Swiss Giftliste 1
G-6215
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C12H8S
Formula mass
184.26
Melting point, °C
95 - 98
Boiling point, °C
332
Vapor pressure, mmHg
4 (152 C)
Critical temperature
624
Critical pressure
38.00
Density
1.0084 - 1.1295 g/cm3 (275 - 125 C)
Solubility in water
Insoluble
Partition coefficient, pKow
4.38
Heat of fusion
21.60 kJ/mol
Heat of vaporization
55.7 kJ/mol
Heat of combustion
-104.2 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Eyes: Wear chemical goggles. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear a chemical apron.
Respirators
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide.

Fire.
Flash Point,°C
170
Autoignition, °C
> 450
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Health.
Poison_Class
4
Exposure effects
   Ingestion
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2934 99 90