BS (1,4-Butane Sultone, 99.5%) as Battery Electrolyte Additive, 100 g/bottle, CBEABS

BS (1,4-Butane Sultone) is a member of the sultone family (cyclic esters of sulfonic acids), and its primary function is to optimize the anode interface, significantly enhancing the battery's lifespan, stability, and power performance. The main purpose of 1,4-Butane Sultone is to ensure the formation of a high-quality, stable, and durable Solid Electrolyte Interphase (SEI) layer on the anode (typically graphite, but also used in Li-titanate (LTO) and silicon-based anodes).

Part Number	CBEABS (C-BEA-BS)
CAS	1633-83-6
Chemical Formula	C4H8O3S
Appearance	Colorless Liquid
Purity	99.5% (Battery Grade)
Molecular Weight	136.17 g/mol
Boiling Point	~165 °C
Density	1.331 g/mL at 25 °C (lit.)
Package Size	100 g/bottle

Notes: Please try to store the BS liquid in a dry place (glovebox is the best)

References: 

1. X. Yu, et al. Enhancing the stability of high-voltage lithium-ion battery by using sulfur-containing electrolyte additives, Ionics, 2019, 25, 1447–1457.
2. B. Tong, et al. Sulfur-containing compounds as electrolyte additives for lithium-ion batteries, InfoMat. 2021, 3, 1364-1392.