ChemicalBook > CAS DataBase List > Octaphenylcyclotetrasiloxane

Octaphenylcyclotetrasiloxane

Product Name
Octaphenylcyclotetrasiloxane
CAS No.
546-56-5
Chemical Name
Octaphenylcyclotetrasiloxane
Synonyms
D 4ph;CO9817;CFS-565;Phenyl-D4;JACS-546-56-5;Co-Formula CFS-565;Octaphenylcyclotetrasilox;Ctaphenylcyclotetrasiloxane;OCTAPHENYLCYCLOTETRASILOXANE;octaphenyl-cyclotetrasiloxan
CBNumber
CB7434749
Molecular Formula
C48H40O4Si4
Formula Weight
793.18
MOL File
546-56-5.mol
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Octaphenylcyclotetrasiloxane Property

Melting point:
196-198 °C(lit.)
Boiling point:
334 °C
Density 
1.185
vapor pressure 
0Pa at 25℃
refractive index 
1.62
Flash point:
200 °C
solubility 
very faint turbidity in Toluene
form 
solid
Specific Gravity
1.185
color 
White to Almost white
Water Solubility 
insoluble
Hydrolytic Sensitivity
1: no significant reaction with aqueous systems
BRN 
2320758
LogP
9 at 20℃
CAS DataBase Reference
546-56-5(CAS DataBase Reference)
NIST Chemistry Reference
Octaphenylcyclotetrasiloxane(546-56-5)
EPA Substance Registry System
Cyclotetrasiloxane, octaphenyl- (546-56-5)
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Safety

Safety Statements 
22-24/25
WGK Germany 
1
RTECS 
GZ4398500
TSCA 
Yes
HS Code 
29319090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

TCI Chemical
Product number
O0231
Product name
Octaphenylcyclotetrasiloxane
Purity
>98.0%(HPLC)
Packaging
5g
Price
$23
Updated
2024/03/01
TCI Chemical
Product number
O0231
Product name
Octaphenylcyclotetrasiloxane
Purity
>98.0%(HPLC)
Packaging
25g
Price
$61
Updated
2024/03/01
Alfa Aesar
Product number
L06130
Product name
Octaphenylcyclotetrasiloxane, 98+%
Packaging
25g
Price
$62.65
Updated
2024/03/01
Alfa Aesar
Product number
L06130
Product name
Octaphenylcyclotetrasiloxane, 98+%
Packaging
100g
Price
$130.65
Updated
2024/03/01
TRC
Product number
O273115
Product name
Octaphenylcyclotetrasiloxane
Packaging
250mg
Price
$45
Updated
2021/12/16
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Octaphenylcyclotetrasiloxane Chemical Properties,Usage,Production

Chemical Properties

Octaphenylcyclotetrasiloxane (OPCTS) is a white solid. It can be used for synthesizing pharmaceutical intermediates and organic silicone intermediates, especially for high temperature resistant phenyl silicone oil and other polymers.

Preparation

Octaphenylcyclotetrasiloxane is typically produced industrially by one of two processes: 1) the hydrolysis of diphenyldichlorosilane or 2) the hydrolysis of diphenyldialkoxysilanes.
Process the production of octaphenylcyclotetrasiloxane

Flammability and Explosibility

Not classified

Purification Methods

Recrystallise it from AcOH, EtOAc, *C6H6 or *C6H6/EtOH. It forms two stable isomorphs and both forms, as well as the mixture, melt at 200-201o. There is a metastable form which melts at 187-189o. [Burkhard et al. J Am Chem Soc 67 2174 1945, Hyde et al. J Am Chem Soc 69 488 1947, Beilstein 16 IV 1530.]

Octaphenylcyclotetrasiloxane Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from Octaphenylcyclotetrasiloxane manufacturers

Henan Fengda Chemical Co., Ltd
Product
Octaphenylcyclotetrasiloxane 546-56-5
Price
US $100.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-26
Career Henan Chemical Co
Product
Octaphenylcyclotetrasiloxane 546-56-5
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
Customized
Release date
2018-08-06

546-56-5, OctaphenylcyclotetrasiloxaneRelated Search:

DIPHENYLCYCLOPROPENONE 1,1,3,3,5,5-hexamethyl-1,3,5-trisilacyclohexane Octamethylcyclotetrasiloxane Cyclohexylbenzene 1,1,3,3-Tetramethyldisiloxane DODECAMETHYLCYCLOHEXASILOXANE Hexamethylcyclotrisiloxane Bromoxynil octanoate 1,8-Octanedinitrile Silicone oil 1,1,3,3-TETRAMETHYLDISILOXANE Diphenylsilanediol 1,1,3,3-Tetramethyltetraphenylcyclotetrasiloxane Phenylsilane heptamethylphenylcyclotetrasiloxane 3-PHENYL-1,1,3,5,5-PENTAMETHYLTRISILOXANE 2,4,6,8-Tetramethylcyclotetrasiloxane 1,1,3,3,5,5-HEXAMETHYLTRISILOXANE

  • 1-phenyl-2,5-dihydro-1$l^{5}-phosphole 1-oxide
  • CFS-565
  • Co-Formula CFS-565
  • OCTAPHENYLCYCLOTETRASILOXANE
  • CO9817
  • Cyclotetrasiloxane, octaphenyl-
  • octaphenyl-cyclotetrasiloxan
  • octaphenylcylclotetrasiloxane
  • Octaphenyltetracyclosiloxane
  • OCTAPHENYLCYCLOTETRASILOXANE 99+%
  • Octaphenylcyclotetrasiloxane,98+%
  • 2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7-tetraoxa-2,4,6,8-tetrasilacyclooctane
  • 2,2,4,4,6,6,8,8-Octaphenylcyclooctanetetrasiloxane
  • Cyclotetrasiloxane,2,2,4,4,6,6,8,8-octaphenyl-
  • 1,1,3,3,5,5,7,7-Octaphenylcyclotetrasiloxane
  • 2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
  • 2,4,6,8-tetradiphenyl-[1,3,5,7,2,4,6,8]cyclotetrasiloxane
  • D 4ph
  • Phenyl-D4
  • JACS-546-56-5
  • Octaphenylcyclotetrasiloxane&gt
  • Octaphenylcyclotetrasiloxane ISO 9001：2015 REACH
  • 2,2,4,4,6,6,8,8-Ctaphenyl-1,3,5,7,2,4,6,8-Tetraoxatetrasilcane
  • 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
  • Octabhenyl cyclotetrasiloxane
  • Phenyl Mrthyl Silicone Fluid
  • Ctaphenylcyclotetrasiloxane
  • Octaphenylcyclotetrasilox
  • 546-56-5
  • C48H40O4Si4
  • C6H58Si4O4
  • -SiC6H52O4
  • Organometallic Reagents
  • Organosilicon
  • Siloxanes
  • Si-O Compounds
  • Si (Classes of Silicon Compounds)
  • Organosilicon
  • Organometallic Reagents
  • Si (Classes of Silicon Compounds)
  • Siloxanes
  • Si-O Compounds
  • Phenyl Silanes
  • Organics