3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane

Modify Date: 2025-08-25 19:20:00

3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane Structure
3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane structure
 Common Name 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane
CAS Number 17861-60-8 Molecular Weight 250.558
Density 0.8±0.1 g/cm3 Boiling Point 201.0±23.0 °C at 760 mmHg
Molecular Formula C9H26O2Si3 Melting Point N/A
MSDS N/A Flash Point 66.3±23.0 °C

 Names

Name ethyl-methyl-bis(trimethylsilyloxy)silane
Synonym More Synonyms

 Chemical & Physical Properties

Density 0.8±0.1 g/cm3
Boiling Point 201.0±23.0 °C at 760 mmHg
Molecular Formula C9H26O2Si3
Molecular Weight 250.558
Flash Point 66.3±23.0 °C
Exact Mass 250.124054
PSA 18.46000
LogP 5.27
Vapour Pressure 0.4±0.4 mmHg at 25°C
Index of Refraction 1.409

 Safety Information

HS Code 2934999090

 Synthetic Route

ethene structure

ethene

CAS#:54509-73-8

1,1,1,3,5,5,5-Heptamethyltrisiloxane structure

1,1,1,3,5,5,5-H...

CAS#:1873-88-7

~92%

3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane Structure

3-Ethyl-1,1,1,3...

CAS#:17861-60-8

Literature: Sunada, Yusuke; Tsutsumi, Hironori; Shigeta, Keisuke; Yoshida, Ryota; Hashimoto, Toru; Nagashima, Hideo Dalton Transactions, 2013 , vol. 42, # 48 p. 16687 - 16692
Chlorotrimethylsilane structure

Chlorotrimethyl...

CAS#:75-77-4

Dichloro(ethyl)methylsilane structure

Dichloro(ethyl)...

CAS#:4525-44-4

~48%

3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane Structure

3-Ethyl-1,1,1,3...

CAS#:17861-60-8

N/A structure

N/A

CAS#:18077-54-8

Detail
Literature: Gmelin Handbook: Si: MVol.C, 105, page 289 - 291 Full Text Show Details Dow Corning Corp. Patent: US2495362 , 1950 ; C. A., 1950 , p. 5644
Hexamethyldisiloxane structure

Hexamethyldisiloxane

CAS#:107-46-0

~42%

3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane Structure

3-Ethyl-1,1,1,3...

CAS#:17861-60-8

N/A structure

N/A

CAS#:18077-54-8

3,5,7-triethyl-1,1,1,3,5,7,9,9,9-nonamethyl-pentasiloxane structure

3,5,7-triethyl-...

CAS#:17940-62-4

Detail
Literature: Gmelin Handbook: Si: MVol.C, 105, page 289 - 291 Full Text Show Details Dow Corning Corp. Patent: US2495362 , 1950 ; C. A., 1950 , p. 5644
Chlorotrimethylsilane structure

Chlorotrimethyl...

CAS#:75-77-4

Dichloro(ethyl)methylsilane structure

Dichloro(ethyl)...

CAS#:4525-44-4

~%

3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane Structure

3-Ethyl-1,1,1,3...

CAS#:17861-60-8

Literature: Dow Corning Corp. Patent: US2495362 , 1948 ; Full Text Show Details Andrianow et al. Zhurnal Obshchei Khimii, 1959 , vol. 29, p. 4059,4060, 4063; engl. Ausg. S. 4019, 4020, 4022

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

heptamethyl 2-ethyl trisiloxane
3-Aethyl-1,1,1,3,5,5,5-heptamethyl-trisiloxan
3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane
Trisiloxane, 3-ethyl-1,1,1,3,5,5,5-heptamethyl-
Trisiloxane,3-ethyl-1,1,1,3,5,5,5-heptamethyl
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Chemsrc provides CAS#:17861-60-8 MSDS, density, melting point, boiling point, structure, etc. Its name is 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane>> amp version: 3-Ethyl-1,1,1,3,5,5,5-heptamethyltrisiloxane

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