| Identification | More | [Name]
Octaphenylcyclotetrasiloxane | [CAS]
546-56-5 | [Synonyms]
OCTAPHENYLCYCLOTETRASILOXANE
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
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 | [EINECS(EC#)]
208-904-9 | [Molecular Formula]
C48H40O4Si4 | [MDL Number]
MFCD00003268 | [Molecular Weight]
793.17 | [MOL File]
546-56-5.mol |
| Safety Data | Back Directory | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
1
| [RTECS ]
GZ4398500
| [TSCA ]
Yes | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
White solid | [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]
Notclassified | [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.] |
|
|