3522-94-9

Basic information

• Product Name: 2,2,5-Trimethy lhexane
• Synonyms: 2,2,5-Trimethylhexane;NSC 65657
• CAS NO: 3522-94-9
• Molecular Formula: C₉H₂₀
• Molecular Weight: 128.29
• EINECS: 222-537-1
• Mol File: 3522-94-9.mol
• Article Data: 12

Chemical Properties

• Boiling Point: 122°C
• Flash Point: 13°C
• Appearance: /
• Density: 0,71 g/cm3
• Vapor Pressure: 16mmHg at 25°C
• Refractive Index: 1.406
• CAS DataBase Reference: 2,2,5-Trimethy lhexane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2,5-Trimethy lhexane(3522-94-9)
• EPA Substance Registry System: 2,2,5-Trimethy lhexane(3522-94-9)

Safety Data

• Hazardous Substances Data: 3522-94-9(Hazardous Substances Data)

Usage

General Description

2,2,5-Trimethylhexane is a chemical compound with the molecular formula C9H20. It is an isomer of octane and exists as a clear, colorless liquid at room temperature. 2,2,5-Trimethy lhexane is a type of branched-chain alkane, with a structure consisting of six carbon atoms arranged in a zigzag pattern, with three methyl groups attached to the second carbon atom. 2,2,5-Trimethylhexane is commonly used as a solvent in various industrial applications, including cleaning products, paints, and coatings. Its low boiling point and high octane rating make it useful as a component in gasoline and other fuel blends. Additionally, it is also used as a reference standard in gas chromatography for the analysis of hydrocarbon mixtures.

InChI:InChI=1/C9H20/c1-8(2)6-7-9(3,4)5/h8H,6-7H2,1-5H3

Upstream product

• 107-01-7 butene-2 
• 78-78-4 methylbutane 
• 70689-88-2 (E)-2,2,5-trimethyl-3-hexene 
• 463-82-1 2,2-dimethylpropane 
• 287-92-3 Cyclopentane 
• 1070-87-7 2,2,4,4-tetramethylpentane 
• 67-56-1 methanol 
• 124030-73-5 2,5,5-trimethyl-hexa-1,3-diene 
• 7664-93-9 sulfuric acid 
• 74-98-6 propane 
• 75-28-5 Isobutane 
• 74-85-1 ethene 
• 106-97-8 n-butane 
• 109-66-0 pentane 

Downstream Products

• 75-97-8 3,3-dimethyl-butan-2-one 
• 14272-73-2 5,5-dimethyl-2-hexanone 
• 14705-50-1 2,2,5-trimethylhexan-3-one 
• 40239-50-7 2,5,5-trimethylhexan-3-one 
• 1069-53-0 2,3,5-trimethylhexane 
• 7647-01-0 hydrogenchloride 

Relevant articles and documents

Ionic liquid and solid HF equivalent amine-poly(hydrogen fluoride) complexes effecting efficient environmentally friendly isobutane-isobutylene alkylation

Isoparaffin-olefin alkylation was investigated using liquid as well as solid onium poly(hydrogen fluoride) catalysts. These new immobilized anhydrous HF catalysts contain varied amines and nitrogen-containing polymers as complexing agents. The liquid poly(hydrogen fluoride) complexes of amines are typical ionic liquids, which are convenient media and serve as HF equivalent catalysts with decreased volatility for isoparaffin-olefin alkylation. Polymeric solid amine:poly(hydrogen fluoride) complexes are excellent solid HF equivalents for similar alkylation acid catalysis. Isobutane-isobutylene or 2-butene alkylation gave excellent yields of high octane alkylates (up to RON = 94). Apart from their excellent catalytic performance, the new catalyst systems significantly reduce environmental hazards due to the low volatility of complexed HF. They represent a new, green class of catalyst systems for alkylation reactions, maintaining activity of HF while minimizing its environmental hazards.

Liquid-phase isobutane/butene-alkylation using promoted Lewis-acidic IL-catalysts

The effect of different promoters on activity and selectivity of Lewis-acidic chloroaluminate ionic liquid catalysts was studied for isobutane/2-butene alkylation. When tert-butyl halides are used as promoters, the active species of the alkylation reaction, which is the tert-butyl cation, is directly generated whereas upon catalysis with Bronsted-acid supported ionic liquids, this species is indirectly provided through a hydride shift between protonated 2-butene and isobutane. Experimental results both from batch and continuously operated liquid phase alkylation reactors indicate, that tert-butyl halides are able to speed up the reaction rate significantly and shift the C8-selectivity towards the desired high-octane trimethylpentanes (TMPs). However, secondary reactions like oligomerization and cracking could not be suppressed by the use of this additives and high deactivation rates in continuous opperation were observed. Suggestions are made, how the product composition is effected by the additive and how the promoted IL-catalyst system is deactivated with time on stream.

Alkylation process with recontacting in settler

A system and/or process for decreasing the level of at least one organic fluoride present in a hydrocarbon phase contained in an alkylation settler by contacting the hydrocarbon phase with an HF containing stream, containing greater than about 80 wt. % and less than about 94 wt. % HF, in the intermediate portion of the settler which contains at least one tray system, with each tray system comprising a perforated tray defining a plurality of perforations and a layer of packing below the perforated tray, are disclosed.