Catalog Number
ACMA00017400
Description
1,2,4-trimethylbenzene appears as a liquid. Flash point near 130°F. Less dense than water and insoluble in water. Vapors irritate eyes, throat, and nose. Used in dyes and pharmaceuticals.;GasVapor; Liquid;liquid;Liquid;COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.;Clear, colorless liquid with a distinctive, aromatic odor.
IUPAC Name
1,2,4-trimethylbenzene
Molecular Weight
120.19g/mol
Molecular Formula
C9H12;C9H12
Canonical SMILES
CC1=CC(=C(C=C1)C)C
InChI
InChI=1S/C9H12/c1-7-4-5-8(2)9(3)6-7/h4-6H,1-3H3
InChI Key
GWHJZXXIDMPWGX-UHFFFAOYSA-N
Boiling Point
334.4 °F at 760 mm Hg (USCG, 1999);169.3 °C;168.89 °C;169 °C;337°F
Melting Point
-47.2 °F (USCG, 1999);-43.8 °C;-43.8 °C;-43.77 °C;-43.8°C;-44 °C;-77°F
Flash Point
111 °F (USCG, 1999);112 °F (44 °C) (Closed cup);44 °C c.c.;112°F
Density
0.889 (USCG, 1999);0.8758 g/cu cm at 20 °C; 0.8718 g/cu m at 25 °C;Relative density (water = 1): 0.88;0.88
Solubility
0.006 % (NIOSH, 2016);4.74e-04 M;0.057 mg/mL at 25 °C;Miscible with ethanol, benzene, ethyl ether, acetone, carbon tetrachloride, petroleum ether;In water, 57 mg/L at 25 °C;0.057 mg/mL at 25 °C;Solubility in water: very poor;0.006%
Color/Form
Clear, colorless liquid
Covalently-Bonded Unit Count
1
Heat of Vaporization
39.2 kJ/mol at boiling point
Log P
3.63 (LogP);3.63;log Kow = 3.78;3.63;3.8
MeSH Entry Terms
1,2,4-trimethylbenzene;pseudocumene
Monoisotopic Mass
120.0939g/mol
Odor
Distinctive, aromatic odor
Other Experimental
Specific gravity: 0.8761 at 20 degC/4 °C;Oxidation yields trimellitic anhydride;Heat of fusion at melting point= 1.3192X10+7 J/kmol; Liquid Molar Volume= 0.137779 cu m/kmol.;Heat of formation at 25 °C = -61.8 kJ/mol; Specific heat at 25 °C = 214.9 J/mol-K;Henry's Law constant = 6.16X10-3 atm-cu m/mol at 25 °C;Hydroxyl radical reaction rate constant = 3.25X10-11 cu cm/molec-sec at 25 °C
Refractive Index
Index of refraction: 1.5048 at 20 °C/D
Vapor Density
4.15 (Air = 1);Relative vapor density (air = 1): 4.1
Vapor Pressure
4.9 mm Hg (USCG, 1999);2.10 mmHg;2.10 mm Hg at 25 °C;(56°F): 1 mmHg