50876-33-0

Basic information

• Product Name: 1,1,3,3-TETRAMETHYLCYCLOPENTANE
• Synonyms: cyclopentane,1,1,3,3-tetramethyl-;1,1,3,3-TETRAMETHYLCYCLOPENTANE
• CAS NO: 50876-33-0
• Molecular Formula: C9H18
• Molecular Weight: 126.24
• EINECS: 256-820-6
• Mol File: 50876-33-0.mol
• Article Data: 2

Chemical Properties

• Melting Point: -88.29°C
• Boiling Point: 149.42°C (estimate)
• Flash Point: 17.9°C
• Appearance: /
• Density: 0.7469
• Vapor Pressure: 20.3mmHg at 25°C
• Refractive Index: 1.4100
• CAS DataBase Reference: 1,1,3,3-TETRAMETHYLCYCLOPENTANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,3,3-TETRAMETHYLCYCLOPENTANE(50876-33-0)
• EPA Substance Registry System: 1,1,3,3-TETRAMETHYLCYCLOPENTANE(50876-33-0)

Safety Data

• Hazardous Substances Data: 50876-33-0(Hazardous Substances Data)

Usage

Physical state

Colorless liquid

Odor

Faint

Flammability

Flammable

Solubility in water

Insoluble

Uses

a. Solvent
b. Production of perfumes
c. Production of other consumer products

Acute toxicity

Low

Health effects

No significant health effects observed in animal studies

Potential risks

a. Prolonged or repeated exposure may cause irritation to the respiratory system
b. Prolonged or repeated exposure may cause skin irritation

InChI:InChI=1/C9H18/c1-8(2)5-6-9(3,4)7-8/h5-7H2,1-4H3

Upstream product

• 4694-11-5 2,2,4,4-tetramethylcyclopentanone 
• 73062-98-3 O-(2,2,5,5-Tetramethylcyclopentyl)-S-methyldithiocarbonat 
• 38667-10-6 1,1,3,3-Tetramethyl-cyclopenten-⁽⁴⁾ 
• 1070-87-7 2,2,4,4-tetramethylpentane 
• 4694-12-6 2,4,4-trimethylcyclopentan-1-one 
• 4541-35-9 2,2,5,5-tetramethylcyclopentanone 
• 15231-50-2 2,2,5,5-tetramethyl-1-cyclopentanol 
• 25162-95-2 2,2,4,4-Tetramethylhexanedioic acid 
• 102369-69-7 1,1,3,3-Tetramethyl-cyclopentanol-⁽⁴⁾ 

Relevant articles and documents

Mechanisms of 1,5-Dehydrocyclisation and Isomerisation of Alkanes on Iridium, Rhodium, Palladium and Platinum Films

Deuterium tracer studies with a combined gas-liquid chromatography and mass spectrometry analysis of products and using 2,2,4,4-tetramethylpentane (TMP) as a model reactant establish clearly that the selective cyclisation (SCM) of five-carbon chain alkanes on Ir, Rh, Pd and Pt is by the heterogeneous counterpart of reductive elimination of alkyls in organometallic chemistry.A comparison of cyclisation of TMP, 3,3-dimethylpentane and n-pentane on films of the same series of metals and an extended study of cyclisation of 3,3-dimethylpentane and of n-pentane on a series of Pt-Cu alloy films with variation of hydrogen partial pressure show that more than one mechanism of non-selective cyclisation (NSCM) takes place.The isotopic studies show clearly that a monoadsorbed intermediate is sufficient for bond-shift rearrangement of TMP to 2,2,5-trimethylhexane on Ir, Rh, Pd or Pt.An important major conclusion to be derived from the present work is that one surface metal atom comprises the active centre of the catalytic site for a variety of reactions in addition to simple hydrogenation-dehydrogenation.