| Identification | Back Directory | [Name]
PENTAMETHYLDISILOXANE | [CAS]
1438-82-0 | [Synonyms]
pentamethyl-disiloxan
PENTAMETHYLDISILOXANE
Disiloxane,pentamethyl-
PENTAMETHYLDISILOXANE 97+%
Trimethylsiloxydimethylsilane
1,1,1,3,3-Pentamethyldisiloxane
(Trimethylsiloxy)dimethylsilane
1,1,1,3,3-Pentamethyl-disiloxane
Dimethyl(trimethylsilyloxy)silane
Disiloxane, 1,1,1,3,3-pentamethyl-
[(dimethylsilyl)oxy]trimethylsilane
1,1,1,3,3-Pentamethylpropanedisiloxane
2,2,4-Trimethyl-3-oxa-2,4-disilapentane | [EINECS(EC#)]
215-873-5 | [Molecular Formula]
C5H16OSi2 | [MDL Number]
MFCD00053658 | [MOL File]
1438-82-0.mol | [Molecular Weight]
148.35 |
| Chemical Properties | Back Directory | [Boiling point ]
86 °C(lit.)
| [density ]
0.760 g/mL at 20 °C(lit.)
| [refractive index ]
n20/D 1.373
| [Fp ]
-9°C | [storage temp. ]
2-8°C, stored under nitrogen | [form ]
clear liquid | [color ]
Colorless to Almost colorless | [Specific Gravity]
0.758 | [Water Solubility ]
Not miscible or difficult to mix in water. | [Hydrolytic Sensitivity]
3: reacts with aqueous base | [Sensitive ]
Moisture Sensitive | [BRN ]
1734568 | [InChI]
InChI=1S/C5H16OSi2/c1-7(2)6-8(3,4)5/h7H,1-5H3 | [InChIKey]
AOJHDNSYXUZCCE-UHFFFAOYSA-N | [SMILES]
[Si](C)(C)(C)O[SiH](C)C | [EPA Substance Registry System]
Disiloxane, pentamethyl- (1438-82-0) |
| Safety Data | Back Directory | [Hazard Codes ]
F | [Risk Statements ]
11 | [Safety Statements ]
16-23-24/25 | [RIDADR ]
UN 1993 3/PG 2
| [WGK Germany ]
3
| [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29319090 | [Storage Class]
3 - Flammable liquids | [Hazard Classifications]
Flam. Liq. 2 |
| Hazard Information | Back Directory | [Description]
Pentamethyldisiloxane, is an organosilicon compound used in synthesis of siloxane-polyether copolymer surfactants. Pentamethyldisiloxane can also be used as source of the trimethylsilyl functional group in organic synthesis. | [Uses]
Pentamethyldisiloxane is used in the synthesis of siloxane-polyether copolymer surfactants. It is also used as source of trimethylsilyl functional group in organic synthesis. | [Uses]
Pentamethyldisiloxane, is an organosilicon compound used in synthesis of siloxane-polyether copolymer surfactants. Pentamethyldisiloxane can also be used as source of the trimethylsilyl functional group in organic synthesis. | [Synthesis]
Take prepared potassium trimethylsilanolate 1.12kg in 2L of anhydrous tetrahydrofuran, was added dropwise with stirring dimethylchlorosilane1kg, dropwise, room temperature reaction 1h, filtered, concentrated, extracted with ether, dried and concentrated to give a high purity of 98% or more of pentamethyl disiloxane 1.2kg. |
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