IUPAC Name: 1,2,3,5-Tetramethylbenzene
The MF of 1,2,3,5-Tetramethylbenzene (CAS NO.527-53-7) is C₁₀H₁₄.

                                     
The MW of 1,2,3,5-Tetramethylbenzene (CAS NO.527-53-7) is 134.22.
Synonyms of 1,2,3,5-Tetramethylbenzene (CAS NO.527-53-7): Benzene, 1,2,3,5-tetramethyl- ; 1,3,4,5-Tetramethylbenzene ; Isodurene
Apperance: clear colourless to pale yellow liquid
Index of Refraction: 1.501 
EINECS: 208-417-1
Density: 0.868 g/ml 
Flash Point: 63.3 °C
Boiling Point: 199.2 °C
Merck: 5166

Reported in EPA TSCA Inventory.

Mildly toxic by ingestion. A skin irritant. A flammable material. When heated to decomposition it emits acrid smoke and irritating fumes.Safety information of 1,2,3,5-Tetramethylbenzene (CAS NO.527-53-7):
Risk Statements 
20/21/22 Harmful by inhalation, in contact with skin and if swallowed
36/37/38 Irritating to eyes, respiratory system and skin
Safety Statements 
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36/37/39 Wear suitable protective clothing, gloves and eye/face protection
24/25 Avoid contact with skin and eyes
23 Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)
RIDADR  3082
RTECS  DC0475000

 Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as 1,2,3,5-Tetramethylbenzene, 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.