DMMP (Dimethyl Methylphosphonate, >99.0%) as Flame-Retardant Battery Electrolyte Additive, 50-200 g/bottle, CBEADMMP

Dimethyl Methylphosphonate (DMMP) is a highly important compound in battery technology, primarily used as a flame-retardant additive in the organic liquid electrolytes of lithium-ion batteries (LIBs). Its primary role is to significantly enhance the safety of the battery by making the flammable carbonate-based electrolyte non-flammable or self-extinguishing. When the electrolyte begins to burn, DMMP decomposes at high temperatures. This decomposition releases phosphorus-containing radicals, which can effectively scavenge highly reactive radicals that drive the combustion chain reaction. By inhibiting these chain-branching reactions, DMMP dramatically suppresses the combustion of the volatile electrolyte vapors in the gas phase.

Part Number	CBEADMMP (C-BEA-DMMP)
CAS	756-79-6
Chemical Formula	CH3P(O)(OCH3)2
Appearance	Colorless liquid
Purity	>99.0%
Molecular Weight	124.08 g/mol
Density	1.145 g/cm3
Boiling Point	~181 °C (lit.)
Package Size	50 g, 100 g, and 200 g/bottle

Notes: Please store the DMMP liquid in the dry place (glovebox is the best).

References: 

1. F. B. Ajdari, et al. Exploring the Effects of Dopamine and DMMP Additives on Improving the Cycle Boosting and Nonflammability of Electrolytes in Full-Cell Lithium-Ion Batteries (18650), J. Phys. Chem. C 2023, 127, 17, 8195–8207
2. H. F. Xiang, et al. Dimethyl methylphosphonate (DMMP) as an efficient flame retardant additive for the lithium-ion battery electrolytes, J. Power Sources, 2007, 173, 562-564.