565-59-3

Basic information

• Product Name: 2,3-Dimethylpentane
• Synonyms: 2-ETHYL-3-METHYLBUTANE;3,4-DIMETHYLPENTANE;2,3-DIMETHYLPENTANE;ALKANE C7;2,3-dimethyl-pentan;2,3-DIMETHYLPENTANE, 99+%;2,3-DIMETHYLPENTANE, STANDARD FOR GC;2,3-Dimethylpentane,97%
• CAS NO: 565-59-3
• Molecular Formula: C₇H₁₆
• Molecular Weight: 100.2
• EINECS: 209-280-0
• Product Categories: Alphabetic;D;DID - DINChemical Class;Hydrocarbons;Neats;Acyclic;Alkanes;Organic Building Blocks
• Mol File: 565-59-3.mol
• Article Data: 38

Chemical Properties

• Melting Point: -107.55°C (estimate)
• Boiling Point: 89-90 °C(lit.)
• Flash Point: 20 °F
• Appearance: /Liquid
• Density: 0.695 g/mL at 25 °C(lit.)
• Vapor Density: 3.45 (vs air)
• Vapor Pressure: 2.35 psi ( 37.7 °C)
• Refractive Index: n20/D 1.392(lit.)
• Storage Temp.: Flammables area
• Solubility: Soluble in acetone, alcohol, benzene, chloroform, and ether (Weast, 1986)
• PKA: >14 (Schwarzenbach et al., 1993)
• Explosive Limit: ~7%
• Water Solubility: Insoluble in water.
• BRN: 1718734
• CAS DataBase Reference: 2,3-Dimethylpentane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Dimethylpentane(565-59-3)
• EPA Substance Registry System: 2,3-Dimethylpentane(565-59-3)

Safety Data

• Hazard Codes: N-Xn-F,N,Xn,F
• Statements: 36/37/38-67-65-50/53-38-11
• Safety Statements: 16-26-36/37/39-61-9
• RIDADR: UN 3295 3/PG 2
• WGK Germany: 3
• RTECS: SA0428000
• TSCA: Yes
• HazardClass: 3
• PackingGroup: II
• Hazardous Substances Data: 565-59-3(Hazardous Substances Data)

Usage

Description

2,3-Dimethylpentane, also known as 2,3-dimethylvalane, is an organic compound belonging to the alkane family. It is a branched-chain hydrocarbon with the molecular formula C7H16. The presence of two methyl groups at the 2nd and 3rd carbon atoms gives it a unique structure and properties.

Uses

Used in Chemical Industry:
2,3-Dimethylpentane is used as a reactant in the liquid-phase oxidation of 2,4-dimethylpentane. This process is crucial for the production of various chemical intermediates and final products, which can be utilized in different industries.
Used in Research and Development:
2,3-Dimethylpentane is also used in studies focused on the preparation and determination of physical constants of a number of alkanes and cycloalkanes. This research helps in understanding the properties and behavior of these compounds, which can be valuable for their applications in various fields, such as fuel, solvents, and chemical synthesis.

Source

In diesel engine exhaust at a concentration of 0.9% of emitted hydrocarbons (quoted, Verschueren, 1983). Schauer et al. (1999) reported 2,3-dimethylpentane in a diesel-powered medium-duty truck exhaust at an emission rate of 720 μg/km. California Phase II reformulated gasoline contained 2,3-dimethylpentane at a concentration of 29.4 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 5.34 and 714 mg/km, respectively (Schauer et al., 2002).

Environmental fate

Photolytic. A photooxidation rate constant of 3.4 x 10-12 cm3/molecule?sec was reported for the gas-phase reaction of 2,3-dimethylpentane and OH radicals (Atkinson, 1990). Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. 2,3- Dimethylpentane will not hydrolyze because it has no hydrolyzable functional group.

InChI:InChI=1/C7H16/c1-5-7(4)6(2)3/h6-7H,5H2,1-4H3/t7-/m1/s1

Upstream product

• 2465-56-7 methylene 
• 79-29-8 2,3-dimethylbutane 
• 108-08-7 2,4-dimethylpentane 
• 560-21-4 2,3,3-Trimethyl-pentane 
• 565-75-3 2,3,4-trimethylpentane 
• 187737-37-7 propene 
• 75-28-5 Isobutane 
• 78-78-4 methylbutane 
• 128443-64-1 1-chloro-3,4-dimethyl-pentane 
• 3404-72-6 2,3-dimethylpent-1-ene 
• 74-85-1 ethene 
• 142-82-5 n-heptane 
• 595-41-5 2,3-dimethyl-3-pentanol 
• 19781-24-9 3,3-dimethyl-2-pentanol 

Downstream Products

• 589-34-4 3-methyl-hexane 
• 108-08-7 2,4-dimethylpentane 
• 562-49-2 3,3-dimethylpentane 
• 591-76-4 2-Methylhexane 
• 1638-26-2 1,1-Dimethylcyclopentane 
• 142-82-5 n-heptane 
• 1192-18-3 cis-1,2-dimethylcyclopentane 
• 822-50-4 trans-1,2-dimethylcyclopentane 
• 7385-78-6 3,4-dimethylpent-1-ene 
• 3404-72-6 2,3-dimethylpent-1-ene 
• 7357-93-9 2-ethyl-3-methyl-1-butene 
• 10574-37-5 2,3-dimethylpent-2-ene 
• 4914-91-4 (Z)-3,4-dimethyl-2-pentene 
• 4914-92-5 (E)-3,4-dimethyl-2-pentene 

Relevant articles and documents

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Silica-immobilized ionic liquid Br?nsted acids as highly effective heterogeneous catalysts for the isomerization of: N -heptane and n -octane

Metal-free imidazolium-based ionic liquid (IL) Br?nsted acids 1-methyl imidazolium hydrogen sulphate [HMIM]HSO4 and 1-methyl benzimidazolium hydrogen sulphate [HMBIM]HSO4 were synthesized. Their physicochemical properties were investigated using spectroscopic and thermal techniques, including UV-Vis, FT-IR, 1H NMR, 13C-NMR, mass spectrometry, and TGA. The ILs were immobilized on mesoporous silica gel and characterized by FT-IR spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller analysis, ammonia temperature-programmed desorption, and thermogravimetric analysis. [HMIM]HSO4?silica and [HMBIM]HSO4?silica have been successfully applied as promising replacements for conventional catalysts for alkane isomerization reactions at room temperature. Isomerization of n-heptane and n-octane was achieved with both catalysts. In addition to promoting the isomerization of n-heptane and n-octane (a quintessential reaction for petroleum refineries), these immobilized catalysts are non-hazardous and save energy.

Production of Gasoline Fuel from Alga-Derived Botryococcene by Hydrogenolysis over Ceria-Supported Ruthenium Catalyst

Hydrogenolysis of hydrogenated botryococcene (Hy-Bot) was conducted over various supported Ru catalysts, Ir/SiO2, and Pt/SiO2–Al2O3. Ru/CeO2 with very high dispersion showed the highest yield (70 %) of gasoline-range (C5–C12) alkanes at 513 K. The main gasoline-range products were dimethylalkanes. This yield is comparable to or higher than the gasoline yields from botryococcene in the literature, which were obtained at much higher temperature. Ir/SiO2 also showed a high fuel yield, but the activity was much lower than that with the Ru catalysts. The reaction over Pt/SiO2–Al2O3 slowed down before total conversion of Hy-Bot was achieved. Ru/CeO2 was stable in the hydrogenolysis of Hy-Bot without loss of activity and selectivity during reuses. The carbon balance was low for the hydrogenolysis of Hy-Bot over all catalysts if the main products are heavy hydrocarbons, whereas for the hydrogenolysis of squalane the carbon balance was kept near 100 %. 1H NMR spectra of the product mixture and thermogravimetric analyses of the product mixture and the recovered catalyst revealed that the formation of aromatic compounds, polymeric products, and coke was negligible for the carbon balance. In a model reaction using substrate compounds with a substructure of Hy-Bot, only 2,5-dimethylhexane, which has a C6 chain with two Cprimary?Ctertiary bonds, produced a cyclic product, 1,4-dimethylcyclohexane, which has a higher boiling point than the substrate. This dehydrocyclization reaction makes the product distribution in the hydrogenolysis of Hy-Bot more complex.