DODECAMETHYLPENTASILOXANE
- CAS NO.：141-63-9
- Empirical Formula: C12H36O4Si5
- Molecular Weight: 384.84
- MDL number: MFCD00039795
- EINECS: 205-492-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 04:22:39
What is DODECAMETHYLPENTASILOXANE?
Chemical properties
clear colorless liquid
The Uses of DODECAMETHYLPENTASILOXANE
A non-cyclic polydimethyl siloxane. Study shows that it can be transformed by a specific microflora and in the natural environment degraded by mechanisms similar to other organic compounds.
The Uses of DODECAMETHYLPENTASILOXANE
As a basis for silicone oils or fluids designed to withstand extremes of temperature; as a foam suppressant in petroleum lubricating oil.
Definition
ChEBI: An organosiloxane that is pentasiloxane in which all the hydrogens have been replaced by methyl groups. Metabolite observed in cancer metabolism.
Flammability and Explosibility
Non flammable
Properties of DODECAMETHYLPENTASILOXANE
| Melting point: | -81 °C (lit.) |
| Boiling point: | 230 °C (lit.) |
| Density | 0.875 g/mL at 25 °C (lit.) |
| vapor pressure | <1 mm Hg ( 20 °C) |
| refractive index | n |
| Flash point: | 187 °F |
| storage temp. | Refrigerator |
| solubility | Benzene (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| form | liquid |
| color | Colourless |
| Specific Gravity | 0.876 |
| Water Solubility | 70.41ng/L at 23℃ |
| Hydrolytic Sensitivity | 1: no significant reaction with aqueous systems |
| Merck | 14,3404 |
| Dielectric constant | 2.5（20℃） |
| CAS DataBase Reference | 141-63-9(CAS DataBase Reference) |
| EPA Substance Registry System | Pentasiloxane, dodecamethyl- (141-63-9) |
Safety information for DODECAMETHYLPENTASILOXANE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for DODECAMETHYLPENTASILOXANE
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