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Detail of "58775-05-6"

  • CAS Number:
  • 58775-05-6
  • Name:

  • 9H-Fluorene,2,7-bis(1,1-dimethylethyl)-

  • Superlist Name:
  • 2,7-Di-tert-butylfluorene
  • Molecular Structure:
  • Formula:
  • C21H26
  • Molecular Weight:
  • 278.43
  • Synonyms:
  • Fluorene,2,7-di-tert-butyl- (4CI);2,7-Di-tert-butyl-9H-fluorene;2,7-Di-tert-butylfluorene;2,7-di-tert-butyl-9H-fluorene;9H-fluorene, 2,7-bis(1,1-dimethylethyl)-;
  • Density:
  • 0.988 g/cm3
  • Melting Point:
  • 121-124 °C(lit.)
  • Boiling Point:
  • 372.4 °C at 760 mmHg
  • Flash Point:
  • 194.2 °C
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CAS No.58775-05-6 2,7-Di-tert-butylfluoreneCompetitive Product

Assay:99.5%  Appearance:powder  Package:25kg/Cardboa...Storage:1-10MT

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CAS No.58775-05-6 2,7-Di-tert-butylfluoreneCompetitive Product

Assay:98%(HPLC)  Appearance:white powder

Name:2,7-Di-tert-butylfluorene MF:C21H26 MW:278.43

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

98% [58775-05-6] C21H26 FW 278.43 mp120-122℃

Supplier:Pacific ChemSource, Inc.（Puyang Huicheng Chemicals Co., Ltd. ） [ China (Mainland)]

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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CAS No.58775-05-6 2,7-Di-tert-butylfluorene

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Reference

Efficient and tailored polymerization of olefins and styrene by metallocene catalysts
Efficient and tailored polymerization of olefins and styrene by metallocene catalysts. Kaminsky, Walter; Hopf, Andreas; Arndt-rosenau, Michael (Institute for Technical and Macromolecular Chemistry, University of Hamburg, Hamburg D-20146, Germany). Macromolecular Symposia, 201(Mission and Challenge of Polymer Science and Technology), 301-307 (English) 2003 Wiley-VCH Verlag GmbH & Co. KGaA. CODEN: MSYMEC. ISSN: 1022-1360. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Different optimized new Cs-sym.There are some reagents with their cas registry numbers 647030-44-2 and 58775-05-6 are used in this study. ansa zirconocenes were used for the homopolymn. of propene - activated by methylaluminoxane (MAO) with an Al: Zr molar ratio of 2000. In a series of expts., the polymn. temp. was varied in a range from 0 to 60°. The obtained syndiotactic polypropenes show highly isotacticities up to rrrr pentads of 98 % and m.ps. of 150°. Stereoselectivities are sensitive to the monomer concn., showing decreasing syndiotacticities with decreasing propene concn. due to increasing amt. of skipped insertion which is demonstrated for the zirconium catalyst. .
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