Product Identification

Product Name

Dibenzothiophene

Synonyms

[1,1'-Biphenyl]-2,2'-diyl sulfide
2,2'-Biphenylylene sulfide
9-Thiafluorene
Dibenzo[b,d]thiophene
Diphenylene sulfide

CAS

132-65-0

Formula

C12H8S

Molecular Weight

184.26

EINECS

205-072-9

RTECS

HQ3490550

RTECS Class

Other

Beilstein/Gmelin

121101

Beilstein Reference

5-17-02-00239

Physical and Chemical Properties

Appearance

Yellow to green solid.

Solubility in water

Insoluble

Melting Point

95 - 98

Boiling Point

332

Vapor Pressure

4 (152 C)

Density

1.0084 - 1.1295 g/cm3 (275 - 125 C)

Partition Coefficient

4.38

Heat Of Vaporization

55.7 kJ/mol

Heat Of Combustion

-104.2 kJ/mol

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

EC Risk Phrase

R 22

EC Safety Phrase

S 22 36/37

Exposure Controls/Personal Protection

Personal 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.

Poison Class

4

Fire Fighting Measures

Flash Point

170

Autoignition

> 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.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of sulfur, carbon dioxide.

Transport Information

HS Code

2934 99 90