Basic information
- CAS
6166-86-5- Standard SMILES
C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O[SiH](C)O1- InChIKey
HGPDWMTUQRNTQT-UHFFFAOYSA-N- Molecular formula
- C5H20O5Si5
- Average molar mass
- 300.63 g/mol
- Monoisotopic mass
- 300.01570641
Names & identifiers
- Preferred name
- Pentamethyl cyclopentasiloxane
- IUPAC
- 2,4,6,8,10-pentamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane
- English name
- Pentamethylcyclopentasiloxane
- Molecular formula
- C5H20O5Si5
- Molecular weight
- 300.64
Names & synonyms
pentamethyl cyclopentasiloxaneC5H20O5Si5SCHEMBL190229s253412,4,6,8,10-pentamethyl-cyclopentasiloxaneNS00044235D 5HLS 8990Einecs 228-204-7PentamethylcyclopentasiloxanePentamethylcyclopentasiloxane (90%)2,4,6,8,10-PENTAMETHYLCYCLOPENTASILOXANE
Show more names
2,4,6,8,10-pentamethyl-cyclopentasiloxanCyclopentasiloxane, 2,4,6,8,10-pentamethyl-2,4,6,8,10-Pentamethylcyclodecapentasiloxane2,4,6,8,10-Pentamethylcyclodecanepentasiloxane
Database identifiers
- CAS
6166-86-5- PubChem CID
- 80304
- DTXSID
DTXSID80871154
Properties
Computed structural properties
- Topological polar surface area
- 46.2 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 5
- Rotatable bonds
- 0
- Heavy atoms
- 15
- Formal charge
- 0
- Complexity
- 130
Experimental & physicochemical properties
SpringerMaterials PropertiesDensity
Physicochemical properties
- Melting point
- -108 °C · -108°C
- Boiling point
- 54 °C/10 · 54 °C/10 mmHg (lit.)
- Density
- 0.992 g/mL · 0.992 g/mL at 25 °C (lit.)
- vapor pressure
- 0.05 · 0.05-91Pa at 20℃
- refractive index
- 20 · n 20/D 1.392 (lit.)
- Flash point
- 37 °C · 37 °C - closed cup
- storage temp.
- 2 · 2-8°C
- form
- liquid
- color
- Colorless
- Specific Gravity
- 0.998 · 0.998
- Viscosity
- 19.6 mm2/s · 19.6mm2/s
- Water Solubility
- 110 · 110-1000000000μg/L at 20℃
- Hydrolytic Sensitivity
- 3 · 3: reacts with aqueous base
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety data
- F
- 10-21
- PPE
- Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 1993 3/PG 3
- risk_code
- 10-36/37/38
- Signal word
- Warning
- Symbol(GHS)
- GHS02
- hazard_code
- Xi
- safety_code
- 16-26-36
- Storage Class
- 3 - Flammable liquids
- Hazard statements
- H226
- REACH Registrations
- Active
- Hazard Classifications
- Flam. Liq. 3
- Precautionary statements
- P210-P233-P240-P241-P242-P243
Chemistry & industry
Applications
Uses2,4,6,8,10-Pentamethylcyclopentasiloxane is an active reagent in the preparation of cyclolinear polysiloxanes and in the preparation of novel class of hybrid polyurethanes.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers36 total
湖北鑫立恒化工有限公司13164644252 · [email protected]
Hebei Chuanghai Biotechnology Co., Ltd+86-17732866630 · [email protected]
Career Henan Chemica Co+86-0371-86658258 +86-13203830695 · [email protected]
上海麦克林生化科技股份有限公司021-50706066 15221275939 · [email protected]
温州共赢化学有限公司+86-0086-577-64498589 +86-15355981851 · [email protected]
陕西缔都新材料有限公司
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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