934-80-5

Basic information

• Product Name: 4-ETHYL-O-XYLENE
• Synonyms: 1-ethyl-3,4-dimethylbenzene;2-Methyl-p-ethyltoluene;3,4-dimethyl-1-ethylbenzene;4-ethyl-1,2-dimethyl-benzen;4-ethyL-1,2-dimethyldibenzene;benzene,1-ethyl-3,4-dimethyl-;enzene,1-ethyl-3,4-dimethyl-;o-Xylene, 4-ethyl-
• CAS NO: 934-80-5
• Molecular Formula: C₁₀H₁₄
• Molecular Weight: 134.22
• EINECS: 213-293-7
• Mol File: 934-80-5.mol
• Article Data: 4

Chemical Properties

• Melting Point: -67 °C
• Boiling Point: 190°C
• Flash Point: 38°C
• Appearance: /
• Density: 0.88
• Vapor Pressure: 0.776mmHg at 25°C
• Refractive Index: 1.5020-1.5040
• Storage Temp.: Sealed in dry,Room Temperature
• Water Solubility: Insoluble in water
• CAS DataBase Reference: 4-ETHYL-O-XYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: 4-ETHYL-O-XYLENE(934-80-5)
• EPA Substance Registry System: 4-ETHYL-O-XYLENE(934-80-5)

Safety Data

• Statements: 10
• Safety Statements: 16
• RIDADR: 1993
• HazardClass: 3.2
• PackingGroup: III
• Hazardous Substances Data: 934-80-5(Hazardous Substances Data)

Usage

General Description

4-Ethyl-O-xylene, also known as ethylmethylbenzene, is a structural isomer in the xylene family. Xylene refers to any one of three isomeric aromatic hydrocarbon compounds derived from benzene distinguished by the two methyl groups attached to its ring. The name 4-ethyl-o-xylene refers to its specific arrangement where one methyl group and an ethyl group are bonded to the aromatic ring. It is generally used as a solvent in various industries and research settings. Its properties as a hydrocarbon make it lipophilic, meaning it is potentially harmful to human and environmental health as it can accumulate in biological tissues.

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

Upstream product

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• 7647-01-0 hydrogenchloride 

Downstream Products

• 619-04-5 3,4-dimethylbenzoic acid 
• 528-44-9 1,2,4-benzene tricarboxylic acid 

Relevant articles and documents

One-pot production of hydrocarbon oil from poly(3-hydroxybutyrate)

Poly(3-hydroxybutyrate) (PHB) is an energy storage material of many microbial species, and has been found to be an effective feedstock for production of renewable hydrocarbon oils. A high oil yield (up to 38.2 wt%) was obtained in a phosphoric acid (H3PO4) solution at mild temperatures (165-240 °C). PHB and crotonic acid (C4H 6O2), a dominant thermal degradation product of PHB, were deoxygenated mainly via decarboxylation, generating similar liquid and gaseous products. Carbon dioxide and propylene were the major products in gas phase with little CO formation. The hydrocarbon oil (C4-C16) is a mixture of alkanes, alkenes, benzenes and naphthalenes. Aromatics (C10-C15) were the major hydrocarbons in a 100 wt% H3PO4 solution, while alkenes and alkanes (C4-C9) were favored in diluted solutions (50 wt% to 85 wt% H 3PO4). The concentration of H3PO4 was a key factor that affected the oil composition and yield. A highly efficient decarboxylation of crotonic acid at 220 °C for 3 hours resulted in 70.8 wt% of oxygen being removed as CO2 and 57.0 wt% of carbon being recovered as hydrocarbon oil. The H3PO4 solution can be repeatedly used for high yield oil production. This work shows that a type of new biological feedstock can be used to produce renewable hydrocarbon oil in an efficient one-pot reaction. This journal is the Partner Organisations 2014.

IDENTIFICATION OF LOW-BOILING FRACTION OF PYROLYSIS OIL

Composition of the low-boiling fraction of the pyrolysis oil obtained from continuous rectification has been determined by combination of capillary gas-liquid chromatography with other identification methods (catalytic hydrogenation, polymerization).In this way components have been identified which form overall 86.0 per cent (m/m) of the low-boiling fraction.The said pyrolysis oil fraction has been found to contain almost 50 per cent (m/m) of unsaturated components able of polymerization, especially methylindenes, methyl-, ethyl- and dimethylvinylbenzenes, divinylbenzenes and 1,2-dihydronaphthalene.Elution behaviour of all the identified isomeric methylindenes, divinylbenzenes and 1,2-dihydronaphthalene has been evaluated by determination of parameters of the equation Ist.phase(2) = k.Ist.phase(1) + q. The Kovats elution indices of all the identified aromatic hydrocarbons have been determined with the use of a glass capilary column wetted with Carbowax 20M at 80o C.