Hexamethyldisiloxane, 98+%

Product Code.	Quantity	unitSize
11423814	100 mL	100mL
11448890	25 mL	25mL
11433814	500 mL	500mL
11443814	2500 mL	2500mL

Product Code. 11423814 Supplier Thermo Scientific Alfa Aesar Supplier No. A11848.AE

Description

CAS: 107-46-0 | C6H18OSi2 | 162.379 g/mol

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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.

Solubility
Slightly miscible with water.

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

Specifications

Chemical Identifiers

• CAS: 107-46-0
• Molecular Formula: C6H18OSi2
• MDL Number: MFCD00008265
• InChI Key: UQEAIHBTYFGYIE-UHFFFAOYSA-N
• Synonym: hexamethyldisiloxane, disiloxane, hexamethyl, hexamethyl disiloxane, oxybis trimethylsilane, fluka ag, hmdso, bis trimethylsilyl ether, belsil dm 0.65, bis trimethylsilyl oxide
• PubChem CID: 24764
• ChEBI: CHEBI:78002
• IUPAC Name: trimethyl(trimethylsilyloxy)silane
• SMILES: C[Si](C)(C)O[Si](C)(C)C

• Melting Point: -67°C
• Density: 0.764
• Boiling Point: 100°C to 101°C
• Flash Point: −2°C (28°F)
• Odor: Characteristic
• Linear Formula: (CH₃)₃SiOSi(CH₃)₃
• Refractive Index: 1.377
• Quantity: 100 mL
• UN Number: UN1993
• Beilstein: 1736258
• Solubility Information: Slightly miscible with water.
• Molecular Weight (g/mol): 162.379
• Formula Weight: 162.38
• Percent Purity: ≥98%
• Chemical Name or Material: Hexamethyldisiloxane

Safety and Handling

Product Identifier

• Hexamethyldisiloxane

Signal Word

• Danger

Hazard Category

• LONG-TERM AQUATIC HAZARD Chronic 1
• ACUTE AQUATIC Acute 1
• Flammable liquid Category 2

Hazard Statement

• H225-Highly flammable liquid and vapour.
• H400-Very toxic to aquatic life.
• H410-Very toxic to aquatic life with long lasting effects.

Precautionary Statement

• P210-Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P273-Avoid release to the environment.
• P403+P233-Store in a well-ventilated place. Keep container tightly closed.

Supplemental information

• MIXTURE LIST-Contain: Hexamethyldisiloxane

SDS

RUO – Research Use Only