4132-72-3

Basic information

• Product Name: 1-Isopropyl-2,5-dimethylbenzene
• Synonyms: 1,4-Dimethyl-2-(1-methylethyl)benzene;1-Isopropyl-2,5-dimethylbenzene;2-Isopropyl-p-xylene
• CAS NO: 4132-72-3
• Molecular Formula: C₁₁H₁₆
• Molecular Weight: 148.2447
• Mol File: 4132-72-3.mol
• Article Data: 4

Chemical Properties

• Melting Point: -44.72°C (estimate)
• Boiling Point: 196.2°C
• Flash Point: 64.6°C
• Appearance: /
• Density: 0.8699
• Vapor Pressure: 0.566mmHg at 25°C
• Refractive Index: 1.4988
• CAS DataBase Reference: 1-Isopropyl-2,5-dimethylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Isopropyl-2,5-dimethylbenzene(4132-72-3)
• EPA Substance Registry System: 1-Isopropyl-2,5-dimethylbenzene(4132-72-3)

Safety Data

• Hazardous Substances Data: 4132-72-3(Hazardous Substances Data)

Usage

Physical state

Colorless liquid

Odor

Strong

Natural occurrence

Found in essential oils of cumin and thyme

Uses

+ Flavoring agent in food and beverages
+ Fragrance in cosmetic and personal care products
+ Ingredient in pharmaceuticals and household cleaning products due to antiseptic and antimicrobial properties

Therapeutic effects

+ Reduces inflammation
+ Promotes wound healing

Safety concerns

+ Can be irritant to skin, eyes, and respiratory system
+ May cause allergic reactions in some individuals

InChI:InChI=1/C11H16/c1-8(2)11-7-9(3)5-6-10(11)4/h5-8H,1-4H3

Upstream product

• 187737-37-7 propene 
• 106-42-3 para-xylene 
• 75-29-6 isopropyl chloride 
• 2142-73-6 1-(2,5-dimethylphenyl)-1-ethanone 
• 108-20-3 di-isopropyl ether 
• 7664-93-9 sulfuric acid 
• 22996-46-9 2-(2,5-dimethylphenyl)-propan-2-ol 
• 67-63-0 isopropyl alcohol 
• 106-94-5 propyl bromide 
• 4358-74-1 1-Propyl-<2.5-dibrombenzol>-sulfonat 

Downstream Products

• 101437-64-3 1-cyclopentyl-4-isopropyl-2,5-dimethyl-benzene 
• 92300-82-8 3-(2,4-Dimethyl-3-isopropyl-phenyl)-propionsaeure 
• 94866-02-1 2-<2,5-Dimethyl-3-isopropyl-benzyl>-malonsaeure-diaethylester 
• 3034-97-7 tetramethyl benzene-1,2,3,5-tetracarboxylate 
• 479-47-0 benzene-1,2,3,5-tetracarboxylic acid 
• 106-42-3 para-xylene 
• 4383-12-4 2-isopropyl-4-methylbenzylalcohol 
• 91967-56-5 3-isopropyl-4-methylbenzylalcohol 
• 22996-46-9 2-(2,5-dimethylphenyl)-propan-2-ol 
• 91970-01-3 3-isopropyl-4-methylbenzoic acid 
• 37460-75-6 2-isopropyl-4-methylbenzoic acid 
• 2142-73-6 1-(2,5-dimethylphenyl)-1-ethanone 
• 91561-16-9 3-Isopropyl-2,5-dimethyl-1-chlormethyl-benzol 

Relevant articles and documents

Isopropylation of xylenes catalyzed by ultrastable zeolite Y (USY) and some other solid acid catalysts

The isopropylation of all three xylene isomers was carried out over ultrastable zeolite Y (USY) catalyst to give corresponding dimethyl (1-methylethyl) benzenes, or in other words dimethyl cumenes (DMCs), using isopropanol as alkylating agent. The effect of reaction temperature, space velocity, substrate-to-alkylating-agent molar ratio, and time-on-stream on conversion of xylene isomers and selectivity to dimethyl cumene was studied. Isopropylation of xylenes over USY gives quite high (80 to 95%) DMC selectivity among the dimethyl cumenes, along with a 70-90% yield of DMCs in total products with respect to limiting reagents, i.e., isopropylating agents at relatively low reaction temperatures (423 ± 10 K) and at quite high xylene conversions (85-97% of theoretical maximum value). The solid acid catalysts zeolites H-Y, H-beta, H-mordenite, as well as silica-alumina and sulfated zirconia, were included for comparative studies in the isopropylation of m-xylene.

Kinetics and Regioselectivity of the Autoxidation of o-Substituted Isopropyl Aromatics

The relative chain propagation constants and the regioselectivities of the oxidations of o-cymene and 2-isopropyl-1,4-dimethylbenzene were determined by competitive oxidations of the hydrocarbons with cumene.As expected, the reactivity of the tertiary C-H bond of the isopropyl group is considerably decreased by o-methyl groups.Also in α-isopropylnaphthalene a considerable decrease in the reactivity of the tertiary C-H bond takes place.The decrease of the chain propagation constants effects a decrease of the oxidabilities of o-substituted isopropyl aromatics.In the case of the methyl isopropyl benzenes the increase of the chain termination constants by primary peroxy radicals must also be taken into consideration.This results in a decrease of the oxidabilities which can be observed even in p-cymene (in comparison with cumene).