Triglyme (Triethylene glycol dimethyl ether, G3, >99.95%) Liquid as Battery Electrolyte Solvent, 100-500 g/bottle, CBESG3

Triglyme (chemically known as triethylene glycol dimethyl ether or G3) is a high-boiling, acyclic polyether engineered as a premium solvent, chelating agent, and structural matrix for advanced lithium-metal, lithium-sulfur, and sodium-ion liquid electrolytes. By extending the ethylene glycol chain compared to shorter glymes (like monoglyme/DME or diglyme/G2), G3 provides unique solvation and thermal safety profiles tailored for high-performance electrochemical cells.

Its functional roles in electrolyte engineering are: (1) Solvation Shell Engineering (HCE / LHCE Systems): G3 is a primary building block for High-Concentration Electrolytes (HCEs) and Localized High-Concentration Electrolytes (LHCEs). Its multi-ether backbone binds tightly to lithium or sodium ions, reducing free solvent activity and shifting reduction/oxidation pathways toward beneficial anion-derived interphases. (2) Thermal Stability & Volatility Reduction: Unlike short-chain, highly volatile ethers (such as 1,3-dioxolane or dimethoxyethane), G3's significantly elevated boiling point (~216 °C) and low vapor pressure drastically suppress evaporation risks and enhance the overall thermal safety margin of the cell. (3) Polysulfide Retention Management: In lithium-sulfur systems, its balanced solvent power helps regulate the dissolution and transport of intermediate polysulfides when paired with appropriate fluorinated diluents, mitigating the destructive shuttle effect.

Part Number	CBESG3 (C-BES-G3)
CAS	112-49-2
Chemical Formula	CH3O(CH2CH2O)3CH3
Appearance	Colorless Liquid
Purity	>99.95% (Battery Grade, anhydrous)
Molecular Weight	178.23 g/mol
Density	0.986 g/mL at 25 °C (lit.)
Boling Point	216 °C (lit.)
Package Size	100g, 200 g, and 500 g/bottle

Notes: Please store the G3 liquid in the glovebox and process it with molecular sieve before use. 

References: 

1. G. Hu, et al. Strongly solvating triglyme-based electrolyte realizes stable lithium metal batteries at high-voltage and high-temperature, Energy Storage Materials, 2024, 69, 103402
2. D. Di Lecce, et al. Triglyme-based electrolyte for sodium-ion and sodium-sulfur batteries, Ionics, 2019, 25, 3129–3141