Hexamethyldisilazane, 98+%

Catalog No.	Quantity
AAA15139AC	25 mL
AAA15139AE	100 mL
AAA15139AP	500 mL
AAA151390F	2500 mL

Catalog No. AAA15139AC

Supplier: Thermo Scientific Chemicals A15139AC

Description

CAS: 999-97-3 | C6H19NSi2 | 161.395 g/mol

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, chloroform, ethyl ether and benzene. Immiscible with water.                    

Notes
Incompatible with strong oxidizing agents and strong acids.  

Specifications

Chemical Identifiers

• CAS: 999-97-3
• Molecular Formula: C6H19NSi2
• Molecular Weight (g/mol): 161.395
• MDL Number: MFCD00008259
• InChI Key: FFUAGWLWBBFQJT-UHFFFAOYSA-N
• 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
• PubChem CID: 13838
• ChEBI: CHEBI:85068
• IUPAC Name: [dimethyl-(trimethylsilylamino)silyl]methane
• SMILES: C[Si](C)(C)N[Si](C)(C)C

• Melting Point: -78°C
• Density: 0.774
• Boiling Point: 126°C
• Flash Point: 8°C (46°F)
• Odor: Odorless
• Assay Percent Range: 98+%
• Refractive Index: 1.408
• Linear Formula: (CH₃)₃SiNHSi(CH₃)₃
• Quantity: 25 mL
• UN Number: UN3286
• Beilstein: 635752
• Sensitivity: Moisture sensitive
• Merck Index: 14,4689
• Solubility Information: Miscible with methanol,chloroform,ethyl ether and benzene. Immiscible with water.
• Formula Weight: 161.4
• Percent Purity: ≥98%
• Physical Form: Liquid
• Chemical Name or Material: Hexamethyldisilazane

Safety and Handling

Hazard Category	H225-H302+H332-H311-H314-H335
Hazard Statement	GHS H Statement H225-H311-H331-H314-H318-H302 Highly flammable liquid and vapour. Toxic in contact with skin. Toxic if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. Harmful if swallowed.
Precautionary Statement	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
DOTInformation	Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUID, TOXIC, CORROSIVE, N.O.S.
EINECSNumber	213-668-5
RTECSNumber	JM9230000
TSCA	Yes
storageNote1	Moisture sensitive
Recommended Storage	Ambient temperatures; Store under Nitrogen

SDS

RUO – Research Use Only