| Identification | Back Directory | [Name]
PENTAMETHYLCYCLOPENTASILOXANE | [CAS]
6166-86-5 | [Synonyms]
D 5H
LS 8990
Einecs 228-204-7
PENTAMETHYLCYCLOPENTASILOXANE
2,4,6,8,10-PENTAMETHYLCYCLOPENTASILOXANE
2,4,6,8,10-pentamethyl-cyclopentasiloxan
Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-
2,4,6,8,10-Pentamethylcyclodecapentasiloxane
2,4,6,8,10-Pentamethylcyclodecanepentasiloxane
2,4,6 8,10-PENTAMETHYLCYCLOPENTASILOXANE TECH 90+%
PENTAMETHYLCYCLOPENTASILOXANE CONTAINS OTHER CYCLIC HOMOLOGS
2,4,6,8,10-pentamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane
PENTAMETHYLCYCLOPENTASILOXANE: 90% CONTAINS OTHER CYCLIC HOMOLOGS
2,4,6,8,10-pentamethyl-1,3,5,7,9,2λ3,4λ3,6λ3,8λ3,10λ3-pentaoxapentasilecane
2,4,6,8,10-pentamethyl-1,3,5,7,9,2λ3,4λ3,6λ3,8λ3,10λ3-pentaoxapentasilecane | [EINECS(EC#)]
228-204-7 | [Molecular Formula]
C5H20O5Si5 | [MDL Number]
MFCD00053531 | [MOL File]
6166-86-5.mol | [Molecular Weight]
300.64 |
| Chemical Properties | Back Directory | [Melting point ]
-108°C | [Boiling point ]
54 °C10 mm Hg(lit.)
| [density ]
0.992 g/mL at 25 °C(lit.)
| [vapor pressure ]
0.05-91Pa@20°C | [refractive index ]
n20/D 1.392(lit.)
| [Fp ]
39°C | [storage temp. ]
2-8°C | [form ]
liquid | [Specific Gravity]
0.998 | [Water Solubility ]
110-1000000000μg/L at 20℃ | [Hydrolytic Sensitivity]
3: reacts with aqueous base | [BRN ]
1792134 | [LogP]
-2.4-6.33 at 20℃ | [EPA Substance Registry System]
Cyclopentasiloxane, 2,4,6,8,10-pentamethyl- (6166-86-5) |
| Hazard Information | Back Directory | [Uses]
2,4,6,8,10-Pentamethylcyclopentasiloxane is an active reagent in the preparation of cyclolinear polysiloxanes and in the preparation of novel class of hybrid polyurethanes. | [Flammability and Explosibility]
Flammable(100%) | [Toxics Screening Level]
The ITSL for cyclic methylhydrogensiloxane, d5 has been changed from 0.04 μg/m3 to 0.1 μg/m3 based on annual averaging time. |
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