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107-46-0 - Hexamethyldisiloxane, 98+% - HMDSO - A11848 - Alfa Aesar

A11848 Hexamethyldisiloxane, 98+%

Codice CAS
107-46-0
Sinonimi
HMDSO

Dimensioni Prezzo ($) Quantità Disponibilità
100ml 20,70
500ml 71,10
2500ml 292,00
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Hexamethyldisiloxane, 98+%

MDL
MFCD00008265
EINECS
203-492-7

Proprietà chimiche

Formula
C6H18OSi2
Peso formula
162.38
Punto di fusione
-67°
Punto di ebollizione
100-101°
Punto di infiammabilità
-2°(28°F)
Densità
0.764
Indice di rifrazione
1.3770
Solubilità
Slightly miscible with water.

Applicazioni

Hexamethyldisiloxane is used as a solvent in organic reactions. It finds application as an international standard for 1H NMR spectroscopy for calibrating chemical shift. Further, it is used in liquid bandages to protect skin from irritation. In addition, it is used to measure tissue oxygen tension as a receptor molecule. It is also used to make low-k dielectric materials for the semi-conductor industries by plasma-enhanced chemical vapor deposition(PECVD) method.

Note

Hygroscopic. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents, acids, bases and oxygen.

Letteratura

Silylates primary and sec-alcohols and phenols, in the presence of p-TsOH as catalyst. If the substrate contains acid-sensitive groups, PPTS can be used: Tetrahedron Lett., 4261 (1978). See Appendix 4.

In the presence of FeCl3, reacts with benzotrichlorides to give substituted benzoyl chlorides in good yields: J. Chem. Soc., Chem. Commun., 808 (1977).

Reacts with P2O5 to give trimethylsilyl polyphosphate ('PPSE'), a milder and more convenient dehydrating agent then polyphosphoric acid. For examples, and related reagents, see Phosphorus(V)­ oxide, A13348.

Bashir, M.; Bashir, S. Hydrophobic-Hydrophilic Character of Hexamethyldisiloxane Films Polymerized by Atmospheric Pressure Plasma Jet. Plasma Chem. Plasma Process 2015, 35 (4), 739-755.

Hsiao, C. R.; Lin, C. W.; Chou, C. M.; Chung, C. J.; He, J. L. Surface modification of blood-contacting biomaterials by plasma-polymerized superhydrophobic films using hexamethyldisiloxane and tetrafluoromethane as precursors. Appl. Surf. Sci. 2015, 346, 50-56.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H225

Highly flammable liquid and vapour.

Dichiarazioni precauzionali: P210-P280a-P240-P241-P233-P242-P243-P303+P361+P353-P403+P235-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves and eye/face protection. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Keep container tightly closed. Use only non-sparking tools. Take precautionary measures against static discharge. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Store in a well-ventilated place. Keep cool. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
1736258
Classe di rischio
3
Gruppo di imballaggio
II
Codice tariffe armonizzato
2931.90
TSCA
Yes
RTECS
JM9237000

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