29304-70-9

Basic information

• Product Name: 3,3-dimethyl-6-methylidenecyclohexa-1,4-diene
• Synonyms: 1,4-cyclohexadiene, 3,3-dimethyl-6-methylene-; 3,3-Dimethyl-6-methylenecyclohexa-1,4-diene; 3,3-Dimethyl-6-methylidene-1,4-cyclohexadiene
• CAS NO: 29304-70-9
• Molecular Formula: C₉H₁₂
• Molecular Weight: 120.1916
• Mol File: 29304-70-9.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 146.4°C at 760 mmHg
• Flash Point: 26.1°C
• Density: 0.85g/cm³
• Vapor Pressure: 5.87mmHg at 25°C
• Refractive Index: 1.494
• CAS DataBase Reference: 3,3-dimethyl-6-methylidenecyclohexa-1,4-diene(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3-dimethyl-6-methylidenecyclohexa-1,4-diene(29304-70-9)
• EPA Substance Registry System: 3,3-dimethyl-6-methylidenecyclohexa-1,4-diene(29304-70-9)

Safety Data

• Hazardous Substances Data: 29304-70-9(Hazardous Substances Data)

Upstream product

• 1073-14-9 4,4-dimethylcyclohexa-2,5-dienone 
• 27200-84-6 methyl triphenylphosphonium bromide 
• 861537-37-3 1,4,4-trimethyl-cyclohexa-2,5-dienol 

Downstream Products

• 39600-16-3 1,2-Dimethyl-4-(2,2,3,3-tetracyanopropyl)benzol 
• 2348-52-9 4-methylbenzyl radical 
• 95-63-6 1,2,4-Trimethylbenzene 

Relevant articles and documents

CROSS-CONJUGATED POLYENES / Part III. The molecular structures of gaseous bis(4,4-dimethyl-2,5-cyclohexadiene-1-ylidene) and 4,4-dimethyl-1-methylene-2,5-cyclohexadiene

The molecular structures of bis(4,4-dimethyl-2,5-cyclohexadiene-1-ylidene) (1) and 4,4-dimethyl-1-methylene-2,5-cyclohexadiene (2) have been studied by the gas electrondiffraction method.Both molecules were found to have non-planar carbocyclic rings that may be described by C6-C1-C2=C3 dihedral angles of 9.7 and 7.9 deg respectively for the former and latter compounds.The CC double bond at the bridge in the pentaene molecule (1) was found to be significantly longer than those in the ring .