Product Name: 1,2,4-Trimethylbenzene
Synonyms: trimethyl-1,2,4benzene;uns-trimethylbenzene;unsym-Trimethylbenzene;unsym-triethylbenzene;Pseudocumene (PSC);1,2,4-TRIMETHYLBENZENE, 1 GRAM, NEAT;1,2,4-TRIMETHYLBENZENE, 1X1ML, MEOH, 500 0UG/ML;1,2,4-Trimethylbenzol, 250 MG
CAS: 95-63-6
MF: C9H12
MW: 120.19
EINECS: 202-436-9
Product Categories: -;Industrial/Fine Chemicals;Analytical Chemistry;Standard Solution of Volatile Organic Compounds for Water & Soil Analysis;Standard Solutions (VOC);Alpha Sort;Analytical Standards;AromaticsChemical Class;Chemical Class;Hydrocarbons;NeatsVolatiles/ Semivolatiles;TP - TZ;T-ZAlphabetic;Arenes;Building Blocks;Chemical Synthesis;Organic Building Blocks
Mol File: 95-63-6.mol
1,2,4-Trimethylbenzene Structure
1,2,4-Trimethylbenzene Chemical Properties
Melting point -44 °C
Boiling point 168 °C(lit.)
density 0.876 g/mL at 20 °C(lit.)
vapor density 4.1 (vs air)
vapor pressure 4.5 mm Hg ( 37.7 °C)
refractive index n20/D 1.504(lit.)
Fp 120 °F
storage temp. 2-8°C
solubility 0.057g/l
pka >14 (Schwarzenbach et al., 1993)
form Liquid
color Clear colorless
explosive limit 0.8-7%(V)
Odor Threshold 0.12ppm
Water Solubility Soluble in alcohol, benzene and ether. Slightly soluble in water
Merck 14,7915
BRN 1903005
Henry's Law Constant 6.946, 11.202, and 15.702 at 27.0, 35.0, and 45.0 °C, respectively (dynamic headspace, Hansen et al., 1995)
Exposure limits NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA for mixed isomers 25 ppm (adopted).
Stability: Stable. Incompatible with strong oxidizing agents. Flammable. May form explosive mixtures with air.
InChIKey GWHJZXXIDMPWGX-UHFFFAOYSA-N
CAS DataBase Reference 95-63-6(CAS DataBase Reference)
EPA Substance Registry System 1,2,4-Trimethylbenzene (95-63-6)
Safety Information
Hazard Codes Xn,N,F,Xi,T
Risk Statements 10-20-36/37/38-51/53-39/23/24/25-23/24/25-11-65
Safety Statements 26-61-45-36/37-16-7-62
RIDADR UN 3295 3/PG 3
WGK Germany 2
RTECS DC3325000
Autoignition Temperature 959 °F
Hazard Note Irritant/Flammable
TSCA Yes
HazardClass 3
PackingGroup III
HS Code 29029090
Toxicity LD50 i.p. in male, female mice (mg/kg): 5000, 4100 (Janik-Spiechowicz)
China
