811794-45-3

Basic information

• Product Name: 1,20-dibromoeicos-10-ene
• Synonyms: 1,20-dibromoeicos-10-ene
• CAS NO: 811794-45-3
• Molecular Weight: 438.33
• Mol File: 811794-45-3.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1,20-dibromoeicos-10-ene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,20-dibromoeicos-10-ene(811794-45-3)
• EPA Substance Registry System: 1,20-dibromoeicos-10-ene(811794-45-3)

Safety Data

• Hazardous Substances Data: 811794-45-3(Hazardous Substances Data)

Upstream product

• 7766-50-9 1-undecen-11-ylbromide 

Downstream Products

• 14296-16-3 1,20-dibromoeicosane 

Relevant articles and documents

Decreasing the alkyl branch frequency in precision polyethylene: Pushing the limits toward longer run lengths

A symmetrical α,ω-diene monomer with a 36 methylene run length was synthesized and polymerized, and the unsaturated polymer was hydrogenated to generate precision polyethylene possessing a butyl branch on every 75th carbon (74 methylenes between branch points). The precision polymer sharply melts at 104 °C and exhibits the typical orthorhombic unit cell structure with two characteristic wide-angle X-ray diffraction (WAXD) crystalline peaks observed at 21.5° and 24.0°, corresponding to reflection planes (110) and (200), respectively.

Decreasing the alkyl branch frequency in precision polyethylene: Effect of alkyl branch size on nanoscale morphology

Synthesis and morphological characterization are reported for a series of 13 precision branched polyethylene structures, the branch being placed on every 39th carbon and varying in size from methyl to pentadecyl group. A recently established synthetic scheme for preparation of the symmetrical α,ω-diene monomer was employed to increase the number of methylene carbons between the branch points from 20 to 38, yielding polymers with 5.26 mol % α-olefin incorporation. The morphology of these polymers was investigated using differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), and transmission electron microscopy (TEM). Methyl branching significantly reduces the melting point and single crystal lamellae thickness of unbranched polyethylene. On the other hand, all further branches from ethyl to pentadecyl produce polymers that have similar melting points and single crystal lamellae thicknesses. A clear change in the morphology of both solution and melt-grown crystals of these polymers was observed from a situation where the methyl branch is incorporated in the polymer's unit cell to one where branches of greater mass are mostly expelled from the unit cell.