933-98-2

Basic information

• Product Name: 1,2-Dimethyl-3-ethylbenzene
• Synonyms: o-Xylene,3-ethyl- (7CI,8CI); 1,2-Dimethyl-3-ethylbenzene; 1-Ethyl-2,3-dimethylbenzene;2,3-Dimethyl-1-ethylbenzene; 3-Ethyl-1,2-dimethylbenzene; 3-Ethyl-o-xylene
• CAS NO: 933-98-2
• Molecular Formula: C₁₀H₁₄
• Molecular Weight: 0
• EINECS: 213-275-9
• Mol File: 933-98-2.mol
• Article Data: 4

Chemical Properties

• Melting Point: -49.5 °C
• Boiling Point: 194 °C
• Flash Point: 51 °C
• Appearance: /
• Density: 0.89
• Vapor Pressure: 0.695mmHg at 25°C
• Refractive Index: 1.498
• CAS DataBase Reference: 1,2-Dimethyl-3-ethylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Dimethyl-3-ethylbenzene(933-98-2)
• EPA Substance Registry System: 1,2-Dimethyl-3-ethylbenzene(933-98-2)

Safety Data

• Hazardous Substances Data: 933-98-2(Hazardous Substances Data)

Usage

General Description

1,2-Dimethyl-3-ethylbenzene, also known as iso-propyltoluene, is an organic compound with the chemical formula C11H16. It is a colorless liquid with a pleasant odor and is commonly used as a solvent and as an intermediate in the production of various chemicals. This chemical is mainly found in petroleum and has a low volatility, making it useful in applications where evaporation needs to be minimized. Iso-propyltoluene is also used as a fragrance in perfumes and personal care products due to its pleasant odor. Additionally, it is used in the manufacturing of pesticides and as a component in the production of rubber and plastics. Overall, 1,2-Dimethyl-3-ethylbenzene is a versatile chemical with various industrial applications.

InChI:InChI=1/C10H14/c1-4-10-7-5-6-8(2)9(10)3/h5-7H,4H2,1-3H3

Upstream product

• 603-79-2 2,3-dimethylbenzoic acid 
• 576-23-8 2,3-dimethylbromobenzene 
• 75-07-0 acetaldehyde 
• 17429-36-6 4-methyl-4-phenylcyclohex-2-enone 
• 2142-71-4 1-(2,3-dimethyl-phenyl)-ethanone 
• 6069-98-3 cis-1-isopropyl-4-methyl-cyclohexane 

Relevant articles and documents

Evolution of products in the combustion of scrap tires in a horizontal, laboratory scale reactor

A horizontal laboratory reactor was used to study the evolution of byproducts from the combustion of scrap tires at five nominal temperatures (ranging from 650 to 1050 °C) and different oxygen:sample ratios A model was used to calculate the bulk air ratio (λ), and the oxygen consumption was discussed considering this ratio λ. More than 100 volatile and semivolatile compounds were identified and quantified by gas chromatography mass spectrometry, plotting their yields vs the bulk air ratio and temperature. Five different behaviors considering the bulk air ratio and the temperature were identified.

78. Ueber den Anteil sigmatroper 1,5-Wanderung von Kohlenwasserstoffgruppen bei der thermolytischen Skelettisomerisierung 5,5-disubstituierter 1,3-Cyclohexadiene

The uncatalyzed skeletal isomerization of 5,5-disubstituted 1,3-cyclohexadienes was investigated with the aim to establish the extent to which sigmatropic 1,5-shifts of hydrocarbon groups are participating in these reactions.Gas phase pyrolysis of 5,5-diethyl-1,3-cyclohexadiene (7) at 460 deg C followed by chloranil aromatization yields only 4percent of 1,3-diethylbenzene resulting from 7 through a 1,5-ethyl migration in the primary reaction step 2,3-Dimethylethylbenzene (56percent) and 1,4-diethylbentene (4percent) are obtained as other C10-compounds.This shows that isomerization proceeds mainly through a sequence of electrocyclic and 1,7-shift reactions.Ethylbenzene (24percent) and other aromatic C8- and C9-hydrocarbons are formed to a considerable extent, indicating that C,C-bond cleavage is a major competing process and that the 1,3-diethylbenzene found is the result of a radical recombination reaction and not of a concerted sigmatropic shift of the ethyl group. 5-Methyl-5-phenyl-1,3-cyclohexadiene (12) yields 3-methylbiphenyl (14) and biphenyl upon thermolysis and aromatization.Through 13C-substitution of the methyl group in 12 it is shown that in solution at 300 deg skeletal isomerization proceeds through electrocyclic and 1,7-H-shift reactions exclusively.In the gas phase at 500 deg 4percent of the isomerization product is formed by a 1,5-shift of a substituent, presumably of the methyl group, through a dissociative mechanism.Thermolysis of 5,5-diphenyl-1,3-cyclohexadiene (22) at 560 deg in the gas phase leads to 1,1-diphenyl-1,3,5-hexatriene (23) and 1-vinyl-4-phenyl-1,2 dihydronaphthalene (24) through electrocyclic reaction steps.In addition a small amount of m-terphenyl is obtained at high conversion of 22.This indicates that sigmatropic 1,5-phenyl migration can participate in product formation only at high temperature and in the absence of other irreversible pathways to stable products.