4784-94-5

Basic information

• Product Name: 1,3-Cyclopentadiene, 1,2,4-trimethyl-
• CAS NO: 4784-94-5
• Molecular Formula: C8H12
• Molecular Weight: 108.183
• Mol File: 4784-94-5.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,3-Cyclopentadiene, 1,2,4-trimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Cyclopentadiene, 1,2,4-trimethyl-(4784-94-5)
• EPA Substance Registry System: 1,3-Cyclopentadiene, 1,2,4-trimethyl-(4784-94-5)

Safety Data

• Hazardous Substances Data: 4784-94-5(Hazardous Substances Data)

Usage

General Description

1,3-Cyclopentadiene, 1,2,4-trimethyl- is a chemical compound with the molecular formula C8H10. It is a derivative of cyclopentadiene, which is a cyclic diene compound. 1,3-Cyclopentadiene, 1,2,4-trimethyl- is a clear, colorless liquid with a characteristic odor. It is commonly used as a building block in organic synthesis and in the production of various polymers and resins. The compound is also used as a reagent in chemical reactions and as a starting material for the synthesis of other organic compounds. It is important to handle 1,3-Cyclopentadiene, 1,2,4-trimethyl- with care, as it can be hazardous to health and the environment if not handled properly.

Upstream product

• 67-56-1 methanol 

Relevant articles and documents

Methylbenzene hydrocarbon pool in methanol-to-olefins conversion over zeolite H-ZSM-5

The formation and reactivity of a methylbenzenes (MBs) hydrocarbon pool in the induction period of the methanol-to-olefins (MTO) reaction over zeolite H-ZSM-5 was investigated and the mechanistic link of MBs to ethene and propene was revealed. Time evolution analysis of the formed MBs and 12C/13C methanol-switching experiments indicate that in the induction period bulkier compounds such as tetraMB and pentaMB have higher reactivity than their lighter counterparts such as p/m-diMB and triMB. By correlating the distribution of MBs trapped on H-ZSM-5 with ethene and propene, we found that tetraMB and pentaMB favor the formation of propene, while p/m-diMB and triMB mainly contribute to the formation of ethene. On the basis of this relationship, the olefin (ethene and propene) selectivity can be controlled by regulating the distribution of trapped MBs by varying the silicon-to-aluminum ratio of ZSM-5, reaction temperature, and space velocity. The reactivity of MBs and the correlation of MBs with olefins were also verified under steady-state conditions. By observation of key cyclopentenyl and pentamethylbenzenium cation intermediates using in situ solid-state NMR spectroscopy, a paring mechanism was proposed to link MBs with ethene and propene. P/M-diMB and triMB produce ethylcyclopentenyl cations followed by splitting off of ethene, while tetraMB and pentaMB generate propyl-attached intermediates, which eventually produce propene. This work provides new insight into the MBs hydrocarbon pool in MTO chemistry.