Hexamethyldisilazane, Electronic grade, 99+%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11309215	Thermo Scientific Alfa Aesar L16519.AC	25 mL
11319215	Thermo Scientific Alfa Aesar L16519.AE	100 mL
11329215	Thermo Scientific Alfa Aesar L16519.AP	500 mL

Description

Hexamethyldisilazane is used as a solvent in organic synthesis and organometallic chemistry. It is often used as an adhesion promoter for photoresist in photolithography. Further, it is used for the preparation of trimethylsilyl ethers from hydroxy compounds. It is used as an alternative to critical point drying during sample preparation in electron microscopy. It is added to analyte to get silylated diagnostic products during pyrolysis in gas chromatography- mass spectrometry.

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
Hexamethyldisilazane is used as a solvent in organic synthesis and organometallic chemistry. It is often used as an adhesion promoter for photoresist in photolithography. Further, it is used for the preparation of trimethylsilyl ethers from hydroxy compounds. It is used as an alternative to critical point drying during sample preparation in electron microscopy. It is added to analyte to get silylated diagnostic products during pyrolysis in gas chromatography- mass spectrometry.

Solubility
Miscible with methanol, ethyl ether, chloroform and benzene. Immiscible with water.

Notes
Incompatible with strong oxidizing agents and strong acids.  

Chemical Identifiers

• CAS: 999-97-3
• MDL Number: MFCD00008259
• Synonym: hexamethyldisilazane, bis trimethylsilyl amine, hmds, 1,1,1,3,3,3-hexamethyldisilazane, hexamethylsilazane, silanamine, 1,1,1-trimethyl-n-trimethylsilyl, tri-sil, 1,1,1-trimethyl-n-trimethylsilyl silanamine, hexamethyldisilizane, disilazane, 1,1,1,3,3,3-hexamethyl
• ChEBI: CHEBI:85068
• SMILES: C[Si](C)(C)N[Si](C)(C)C

• Molecular Formula: C6H19NSi2
• InChI Key: FFUAGWLWBBFQJT-UHFFFAOYSA-N
• PubChem CID: 13838
• IUPAC Name: [dimethyl-(trimethylsilylamino)silyl]methane

Specifications

• Boiling Point: 126°C
• CAS: 999-97-3
• Linear Formula: (CH₃)₃SiNHSi(CH₃)₃
• UN Number: UN3286
• Flash Point: 8°C (46°F)
• Synonym: hexamethyldisilazane, bis trimethylsilyl amine, hmds, 1,1,1,3,3,3-hexamethyldisilazane, hexamethylsilazane, silanamine, 1,1,1-trimethyl-n-trimethylsilyl, tri-sil, 1,1,1-trimethyl-n-trimethylsilyl silanamine, hexamethyldisilizane, disilazane, 1,1,1,3,3,3-hexamethyl
• InChI Key: FFUAGWLWBBFQJT-UHFFFAOYSA-N
• IUPAC Name: [dimethyl-(trimethylsilylamino)silyl]methane
• PubChem CID: 13838
• Formula Weight: 161.4
• Grade: Electronic
• Refractive Index: 1.408
• Density: 0.774

• Melting Point: -78°C
• Molecular Formula: C6H19NSi2
• MDL Number: MFCD00008259
• Beilstein: 635752
• Merck Index: 14,4689
• Solubility Information: Miscible with methanol,ethyl ether,chloroform and benzene. Immiscible with water.
• SMILES: C[Si](C)(C)N[Si](C)(C)C
• Molecular Weight (g/mol): 161.395
• ChEBI: CHEBI:85068
• Percent Purity: ≥99%
• Odor: Odorless
• Sensitivity: Moisture sensitive
• Chemical Name or Material: Hexamethyldisilazane

Safety and Handling

GHS H Statement
H225-H311-H331-H314-H318-H302
Highly flammable liquid and vapor.
Toxic in contact with skin.
Toxic if inhaled.
Causes severe skin burns and eye damage.
Causes serious eye damage.
Harmful if swallowed.

P210-P233-P235-P240-P241-P242-P243-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P370+P378q-P501c

H225-H302+H332-H311-H314-H335

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Recommended Storage : Ambient temperatures; Store under Nitrogen

RUO – Research Use Only