38970-72-8

Basic information

• Product Name: 2,4-DICYCLOHEXYL-2-METHYLPENTANE
• Synonyms: 2,4-DICYCLOHEXYL-2-METHYLPENTANE;1,1'-(1,1,3-TRIMETHYL-1,3-PROPANEDIYL)BISCYCLOHEXANE;1,1’-(1,1,3-trimethyl-1,3-propanediyl)bis-cyclohexan;1,1'-(1,1,3-trimethylpropane-1,3-diyl)bis(cyclohexane);1,1'-(1,1,3-TRIMETHYL-1,3-PROPANEDIYL)BI S-CYCLOHEXANE, TECH., 90%;HLD;2,4-DICYCLOHEXYL-2-METHYLPENTANE 97%;2-Methyl-2,4-dicyclohexylpentane
• CAS NO: 38970-72-8
• Molecular Formula: C₁₈H₃₄
• Molecular Weight: 250.46
• EINECS: 254-227-7
• Product Categories: Alkanes;Cyclic;Organic Building Blocks
• Mol File: 38970-72-8.mol
• Article Data: 5

Chemical Properties

• Melting Point: -30 °C
• Boiling Point: 112 °C (0.7 mmHg)
• Flash Point: 128 °C
• Appearance: /
• Density: 0.88
• Vapor Pressure: 0.06Pa at 20℃
• Refractive Index: 1.4878-1.4898
• Storage Temp.: -20°C
• Water Solubility: 50μg/L at 20℃
• CAS DataBase Reference: 2,4-DICYCLOHEXYL-2-METHYLPENTANE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-DICYCLOHEXYL-2-METHYLPENTANE(38970-72-8)
• EPA Substance Registry System: 2,4-DICYCLOHEXYL-2-METHYLPENTANE(38970-72-8)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 24/25-36-26
• Hazardous Substances Data: 38970-72-8(Hazardous Substances Data)

Usage

Chemical Properties

CLEAR COLOURLESS LIQUID

Flammability and Explosibility

Notclassified

Synthetic route

4-methyl-2,4-diphenylpent-2-ene (22768-22-5, 22768-23-6, 6258-73-7) → 2,4-dicyclohexyl-2-methyl pentane (38970-72-8)

Conditions	Yield
With 10% Ru/C; hydrogen In water at 100℃; under 9000.9 Torr; for 6h; Catalytic behavior; Reagent/catalyst; Temperature; Pressure; Solvent;	99%

isopropenylbenzene (98-83-9) → 2,4-dicyclohexyl-2-methyl pentane (38970-72-8)

Conditions	Yield
Stage #1: isopropenylbenzene With phosphotungstic acid at 130℃; for 0.0833333h; Stage #2: With hydrogen; palladium 10% on activated carbon In cyclohexane at 180℃; under 29422.9 Torr; for 6h;
Stage #1: isopropenylbenzene With 2-(2-methoxyethoxy)ethyl alcohol at 105℃; for 4h; Stage #2: With nickel at 250℃; under 23252.3 Torr; for 5h;	125 g

dicumene (1889-67-4) + 4-methyl-2,4-diphenylpent-2-ene (22768-22-5, 22768-23-6, 6258-73-7) → 1,2-dicyclohexyl-1,1,2,2-tetramethylethane (5171-88-0) + 2,4-dicyclohexyl-2-methyl pentane (38970-72-8)

Conditions	Yield
With rhodium on carbon In isopropyl alcohol at 100 - 110℃; under 10501.1 - 11251.1 Torr; for 6h; Inert atmosphere; Overall yield = 92 percent;

Upstream product

• 98-83-9 isopropenylbenzene 
• 22768-22-5 4-methyl-2,4-diphenylpent-2-ene 
• 1889-67-4 dicumene 

Relevant articles and documents

Traction fluid with improved low temperature properties

A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.

LUBRICATING OIL COMPOSITION AND LUBRICATING OIL COMPOSITION FOR CONTINUOUSLY VARIABLE TRANSMISSION

A lubricating oil composition of the invention contains longifolene represented by the following formula (1), that is, (1S,3aR,4S,8aS)-4,8,8-trimethyl-9-methylene-decahydro-1,4-methanoazulene.

Fluid for traction drive

The fluid for traction drive containing: (A) an alkane derivative having at least three cyclohexane rings in a molecule; and (B) an alkane derivative having a main chain of two or three carbon atoms, to which at least two methyl groups are bonded, and having two cyclohexane rings in a molecule each bonded to one of the terminal carbon atoms of the alkane, or a cyclopentane derivative having two cyclohexane rings in a molecule, and which has a kinematic viscosity of at least 3 centistokes at 100° C. The fluid has a high traction coefficient with stability over a wide range of temperature.