99-84-3

Basic information

• Product Name: p-mentha-1(7),3-diene
• Synonyms: p-mentha-1(7),3-diene;1(7),3-p-Menthadiene;1-Isopropyl-4-methylene-1-cyclohexene;1-Isopropyl-4-methylenecyclohexene;p-Mentha-3,1(7)-diene;beta-terpinene
• CAS NO: 99-84-3
• Molecular Formula: C₁₀H₁₆
• Molecular Weight: 136.23404
• EINECS: 202-793-0
• Mol File: 99-84-3.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 185.55°C (rough estimate)
• Flash Point: 46.5°C
• Appearance: /
• Density: 0.8380
• Vapor Pressure: 1.69mmHg at 25°C
• Refractive Index: 1.4754
• CAS DataBase Reference: p-mentha-1(7),3-diene(CAS DataBase Reference)
• NIST Chemistry Reference: p-mentha-1(7),3-diene(99-84-3)
• EPA Substance Registry System: p-mentha-1(7),3-diene(99-84-3)

Safety Data

• Hazardous Substances Data: 99-84-3(Hazardous Substances Data)

Usage

InChI:InChI=1/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h6,8H,3-5,7H2,1-2H3

Upstream product

• 5259-66-5 isopropyl-4 cyclohexene-3 one-1 
• 1779-49-3 Methyltriphenylphosphonium bromide 
• 177698-19-0 Beta-pinene 
• 80-56-8 Pinene 

Downstream Products

• 25570-95-0 1,4-dichloro-trans-p-menthane 

Relevant articles and documents

Catalytic activity of the VIII group metals in the hydrogenation and isomerization of α- And β-pinenes

The kinetic regularities of the liquid-phase hydrogenation and isomerization of α- and β-pinenes over the Pd/C, Ru/C, Rh/C, Pt/C, and Ir/C catalysts were studied at temperatures ranging from 20 to 100 °C and at hydrogen pressures of 1-11 bar using n-octane as the solvent. The hydrogenation and isomerization of α- and β-pinenes occur simultaneously on the Ru/C, Rh/C, Pt/C, and Ir/C catalysts, and the reaction mixture contains the products of double bond hydrogenation, viz., cis- and trans-pinanes. The Ru, Rh, and Pd metals have a higher catalytic activity in β-pinene isomerization than Ir and Pt. Among the VIII Group metals studied, the Pd-based catalyst has the highest catalytic activity in double bond isomerization of α- and β-pinenes. The general scheme of the mechanism of hydrogenation and isomerization of α- and β-pinenes on the Pd/C catalyst was proposed.