Diethylbenzene Property

Melting point:

-31°C(lit.)

Boiling point:

180-182 °C (lit.)

Density 

0.87 g/mL at 25 °C (lit.)

vapor density 

~4.6 (vs air)

vapor pressure 

0.99 mm Hg ( 20 °C)

refractive index 

n20/D 1.495(lit.)

Flash point:

134 °F

form 

Liquid

color 

Clear colorless to light yellow

Odor

Characteristic aromatic; like benzene; like toluene,

explosive limit

5%

Water Solubility 

INSOLUBLE

BRN 

1903396

LogP

3.72 at 20℃

CAS DataBase Reference

25340-17-4(CAS DataBase Reference)

EPA Substance Registry System

Diethylbenzene (25340-17-4)

Safety

Hazard Codes 

Xi,N

Risk Statements 

38-51/53-65-36/38-50/53

Safety Statements 

61-62-26-24-60

RIDADR 

UN 2049 3/PG 3

WGK Germany 

2

RTECS 

CZ5600000

TSCA 

Yes

HazardClass 

3.2

PackingGroup 

III

HS Code 

29029090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P331Do NOT induce vomiting.

Diethylbenzene Chemical Properties,Usage,Production

Chemical Properties

Clear colorless to light yellow liquid

Uses

Diethylbenzene (DEB) can be used to synthesize divinylbenzene (DVB) by dehydrogenation reaction. DVB is used in the production of crosslinked polystyrene. DEB can be also employed as low temperature heat transfer fluid with biphenyls.

General Description

A clear colorless liquid with an aromatic odor. Flash point 140°F. Less dense than water and insoluble in water. Vapors heavier than air.

Air & Water Reactions

Flammable. Insoluble in water.

Reactivity Profile

Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as Diethylbenzene, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.

Health Hazard

High vapor concentrations produce eye and respiratory tract irritation, dizziness, depression. Liquid irritates and may blister skin, can cause corneal injury to eye.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Flammability and Explosibility

Non flammable

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

hhldly toxic by ingestion. A skin and eye irritant. Flammable liquid when exposed to heat or flame; can react with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes. See also ETHYL BENZENE.

Toxics Screening Level

The Initial Threshold Screening Level (ITSL) for diethylbenzene (DEB) mixture is 6 μg/m3 based on an annual averaging time.