IUPAC Name: 1,2-diethylbenzene
Molecular Formula: C₁₀H₁₄
Molecular Weight: 134.2182g/mol
EINECS: 246-874-9
Density: 0.865 g/cm³
Boiling Point: 183.5 °C at 760 mmHg
Flash Point: 49.4 °C
Solubility: insoluble in water
Appearance: colorless clear liquid
Liansport Information: UN 2049
Freely Rotating Bonds: 2 
Polar Surface Area: 0 Å² 
Index of Refraction: 1.496 
Molar Refractivity: 45.35 cm³ 
Molar Volume: 155 cm³ 
Polarizability: 17.97 ×10^-24 cm³ 
Surface Tension: 29.1 dyne/cm
Enthalpy of Vaporization: 40.25 kJ/mol 
Vapour Pressure: 1.05 mmHg at 25°C
   The chemical synonyms of Diethy benzene (25340-17-4) are Diethylbenzol ;  o-Diethylbenzene ; Benzene, diethyl- ; Diethyl-benzen ; Diethylbenzene,mixedisomers ; Diethylbenzol ; Diethybenzeneconcentrate ; Diethybenzene .Product categories of Diethy benzene (25340-17-4) are  Arenes ; Building Blocks  ; Organic Building Blocks .The molecular structure of Diethy benzene (25340-17-4) is.

It can be used as intermediate in ion-exchange resin and other organic synthesis .

Reported in EPA TSCA Inventory.

Mildly 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.
Hazard Codes:  Xi,N 
Xi:  Irritant
N:  Dangerous for the environment
Risk Statements:  38-51/53-65-36/38 
51/53:  Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
36/38:  Irritating to eyes and skin 
65:  Harmful: May cause lung damage if swallowed 
38:  Irritating to the skin
Safety Statements:  61-62-26-24
61:  Avoid release to the environment. Refer to special instructions safety data sheet
62:  If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label
HazardClass:  3.2

DOT Classification:  3; Label: Flammable Liquid

It sometimes amounts 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. Its extinguishing agent is foam, dry powder, carbon dioxide and sand.