920398

Lithium bis(trimethylsilyl)amide

99.9% trace metals basis

• Synonym(s): LHMDS, LiHMDS, LiTMSA, Lithium hexamethyldisilazide, Hexamethyldisilazane lithium salt
• Linear Formula: [(CH₃)₃Si]₂NLi
• CAS Number: 4039-32-1
• Molecular Weight: 167.33
• MDL number: MFCD00008261
• UNSPSC Code: 12352111

Properties

• Quality Level: 200
• assay: 99.9% trace metals basis
• form: solid
• density: 0.860 g/mL at 25 °C (lit.)
• application(s): battery manufacturing
• SMILES string: [Li]N([Si](C)(C)C)[Si](C)(C)C
• InChI: 1S/C6H18NSi2.Li/c1-8(2,3)7-9(4,5)6;/h1-6H3;/q-1;+1
• InChI key: YNESATAKKCNGOF-UHFFFAOYSA-N

Description

General description

Lithium bis(trimethylsilyl)amide also known as lithium hexamethyldisilazide (LiHMDS) is a non-nucleophilic strong base. It exhibits ionic conductivity and is widely used as a lithium source and additive in electrolyte formulations for lithium-ion batteries.

Application

Lithium bis(trimethylsilyl)amide can be used:

• As an electrolyte additive for non-aqueous lithium metal batteries. LiHMDS acts as a scavenger for hydrofluoric acid and forms an electrochemical robust cathode|electrolyte interphase (CEI) and suppresses the side reactions with the electrolyte solution.
• As a lithium precursor for atomic layer deposition(ALD) of textured Li₄Ti₅O₁₂ as anode material for Li-ion ultrafast charging thin-film batteries. It enables the controlled delivery of lithium atoms into the deposition process, leading to the growth of thin films with precise thickness and composition.
• As a precursor to fabricate in situ lithiated quinone cathode as high-capacity organic electrode material for all-solid-state thin-film battery setup.

Safety Information

• Pictograms: GHS02,GHS05
• signalword: Danger
• hcodes: H228,H251,H314
• pcodes: P210 - P235 - P260 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Flam. Sol. 1 - Self-heat. 1 - Skin Corr. 1B
• supp_hazards: EUH014
• Storage Class: 4.2 - Pyrophoric and self-heating hazardous materials
• wgk_germany: WGK 2
• flash_point_f: 62.6 °F - closed cup
• flash_point_c: 17 °C - closed cup