| Identification | More | [Name]
DECAMETHYLTETRASILOXANE | [CAS]
141-62-8 | [Synonyms]
DECAMETHYLETRASILOXANE
DECAMETHYLTETRASILOXANE
[(CH3)3SiOSi(CH3)2]2O
1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane
CD3780
D3780
decamethyl-tetrasiloxan
Tetrasiloxane, decamethyl-
Dimethylcyclosilane mixture
Hexaphenylcyclotrisilazane
1,1,3,3,-Tetramethyl-1,3-di(chloromethyl)disiloxane
Dichloromethyl-tetramethyl-disiloxane
Tetramethyldi(chloromethyl)disiloxane
1,3-Di(3-acetoxypropyl)-1,1,3,3-tetramethyl-disiloxane
Diacetoxypropyltetramethyldisiloxane
Tetramethyldiacetoxypropyldisiloxane
Diallyl-tetramethyl-disiloxane
Tetramethyldiallyldisiloxane
1,3-di(3-Aminophenoxy)-1,1,3,3-tetramethyl-disiloxane
Diaminophenoxytetramethyldisiloxane | [EINECS(EC#)]
205-491-7 | [Molecular Formula]
C10H30O3Si4 | [MDL Number]
MFCD00008263 | [Molecular Weight]
310.69 | [MOL File]
141-62-8.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless or yellowish transparent liquid | [Melting point ]
-68 °C (lit.) | [Boiling point ]
194 °C (lit.) | [density ]
0.854 g/mL at 25 °C(lit.)
| [vapor density ]
>1 (vs air)
| [vapor pressure ]
73Pa at 25℃ | [refractive index ]
n20/D 1.389(lit.)
| [Fp ]
144 °F
| [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
<0.1mg/l | [form ]
liquid | [color ]
Colourless to Pale Yellow | [Specific Gravity]
0.854 | [Water Solubility ]
6.74μg/L at 23℃ | [Hydrolytic Sensitivity]
1: no significant reaction with aqueous systems | [Merck ]
2850 | [BRN ]
1776881 | [Dielectric constant]
2.4（20℃） | [Stability:]
Moisture Sensitive | [LogP]
8.21 at 25.1℃ | [CAS DataBase Reference]
141-62-8(CAS DataBase Reference) | [NIST Chemistry Reference]
Tetrasiloxane, decamethyl-(141-62-8) | [EPA Substance Registry System]
141-62-8(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes .
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [WGK Germany ]
3
| [TSCA ]
Yes | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
Colorless or yellowish transparent liquid | [Uses]
A non-cyclic silicone oligomer. Used in the methylation of mercury(II) salts. Study shows that it transformed by a specific microflora and in the natural environment degraded by mechanisms similar to other organic compounds. | [Uses]
Decamethyltetrasiloxane can be used as a basis for silicone oils or fluids designed to withstand extremes of temp; as a foam suppressant in petroleum lubricating oil.
| [Flammability and Explosibility]
Flammable | [Toxics Screening Level]
The ITSL for decamethyltetrasiloxane has been changed from 0.04 μg/m3 to 0.1 μg/m3 based on an annual averaging time. |
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