Octamethylsilsesquioxane

Modify Date: 2025-08-22 19:52:35

Octamethylsilsesquioxane Structure
Octamethylsilsesquioxane structure
Common Name Octamethylsilsesquioxane
CAS Number 17865-85-9 Molecular Weight 536.95300
Density 1.26g/cm3 Boiling Point 235ºC at 760 mmHg
Molecular Formula C8H24O12Si8 Melting Point >350ºC
MSDS Chinese USA Flash Point N/A

 Names

Name Permethyloctasilsesquioxane
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.26g/cm3
Boiling Point 235ºC at 760 mmHg
Melting Point >350ºC
Molecular Formula C8H24O12Si8
Molecular Weight 536.95300
Exact Mass 535.94200
PSA 110.76000
LogP 0.80320

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR NONH for all modes of transport

 Synthetic Route

~77%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Iwamura, Takeru; Adachi, Kaoru; Chujo, Yoshiki Chemistry Letters, 2010 , vol. 39, # 4 p. 354 - 355

~22%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Luo, Qun; Tang, Daihua; Li, Xiaodong; Wang, Qi; Wang, Zhipeng; Zhen, Zhen; Liu, Xinhou Chemistry Letters, 2006 , vol. 35, # 3 p. 278 - 279

~%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Journal of the American Chemical Society, , vol. 77, p. 6045

~20%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Rebrov, E. A.; Tebeneva, N. A.; Mouzafarov, A. M.; Ovchinnikov, Yu. E.; Struchkov, Yu. T.; Strelkova, T. V. Russian Chemical Bulletin, 1995 , vol. 44, # 7 p. 1286 - 1292 Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1995 , # 7 p. 1332 - 1339

~23%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Rebrov, E. A.; Tebeneva, N. A.; Mouzafarov, A. M.; Ovchinnikov, Yu. E.; Struchkov, Yu. T.; Strelkova, T. V. Russian Chemical Bulletin, 1995 , vol. 44, # 7 p. 1286 - 1292 Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1995 , # 7 p. 1332 - 1339

~%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Arkiv foer Kemi, , vol. 13, p. 367,376

~65%

Octamethylsilsesquioxane Structure

Octamethylsilse...

CAS#:17865-85-9

Literature: Martynova, T. N.; Korchkov, V. P. Journal of Organometallic Chemistry, 1983 , vol. 248, # 3 p. 241 - 250

 Synonyms

Poly(Methyl Silsesquioxane)
MFCD02683561
PSS-Octamethyl substituted
Octamethylsilsesquioxane
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