DMMP (Dimethyl Methylphosphonate, 99.5%) as Flame-Retardant Battery Electrolyte Additive, 100 g/bottle, CBEADMMP
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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 |
99.5% (Battery Grade) |
| Molecular Weight | 124.08 g/mol |
| Density | 1.145 g/cm3 |
| Boiling Point | ~181 °C (lit.) |
| Package Size | 100 g/bottle |
Notes: Please store the DMMP liquid in the dry place (glovebox is the best).
References:
- 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
- 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.