Description

Lithium bis[ethanedioato(2-)-kappaO1,kappaO2]difluorophosphate(1-) (CAS No. 678966-16-0) is a high-purity lithium-based electrolyte additive designed for advanced lithium-ion battery applications. With the molecular formula C4F2LiO8P, this compound is synthesized to enhance the electrochemical performance and thermal stability of battery systems. Its IUPAC name, lithium;5-fluoro-1,4,6,9-tetraoxa-5lambda5-phosphaspiro[4.4]nonane-2,3,7,8-tetrone;fluoride, reflects its unique spirocyclic structure, which contributes to its exceptional stability and efficiency. This additive is particularly valued for its ability to form a robust solid electrolyte interface (SEI) layer, improving cycle life and high-temperature performance. Packaged under inert conditions to ensure purity and longevity, it is ideal for researchers and engineers working on next-generation energy storage solutions.

Properties

• CAS Number: 678966-16-0
• Complexity: 327
• IUPAC Name: lithium;5-fluoro-1,4,6,9-tetraoxa-5lambda5-phosphaspiro[4.4]nonane-2,3,7,8-tetrone;fluoride
• InChI: InChI=1S/C4FO8P.FH.Li/c5-14(10-1(6)2(7)11-14)12-3(8)4(9)13-14;;/h;1H;/q;;+1/p-1
• InChI Key: MEPAUCRHUQOWMJ-UHFFFAOYSA-M
• Exact Mass: 251.94588871
• Molecular Formula: C4F2LiO8P
• Molecular Weight: 252.0
• SMILES: [Li+].C1(=O)C(=O)OP2(O1)(OC(=O)C(=O)O2)F.[F-]
• Topological: 105
• Monoisotopic Mass: 251.94588871
• Synonyms: 678966-16-0, Lithium bis(ethanedioato(2-)-kappaO1,kappaO2)difluorophosphate(1-), Lithium bis[ethanedioato(2-)-kappaO1,kappaO2]difluorophosphate(1-), 695-938-6, LIDODFP, SCHEMBL29204241

Application

Lithium bis[ethanedioato(2-)-kappaO1,kappaO2]difluorophosphate(1-) is primarily used as an electrolyte additive in lithium-ion batteries to enhance high-temperature stability and cycle performance. It facilitates the formation of a more stable SEI film on cathode surfaces, reducing degradation and improving battery longevity. This compound is particularly suited for high-energy-density applications, such as electric vehicles and grid storage systems, where thermal resistance is critical.

Safety and Hazards

GHS Hazard Statements

• H301 (84.6%): Toxic if swallowed [Danger Acute toxicity, oral]
• H302 (15.4%): Harmful if swallowed [Warning Acute toxicity, oral]
• H311 (23.1%): Toxic in contact with skin [Danger Acute toxicity, dermal]
• H312 (15.4%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H314 (76.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H315 (23.1%): Causes skin irritation [Warning Skin corrosion/irritation]
• H317 (23.1%): May cause an allergic skin reaction [Warning Sensitization, Skin]
• H318 (61.5%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H319 (23.1%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H332 (15.4%): Harmful if inhaled [Warning Acute toxicity, inhalation]

Precautionary Statements

• P260, P261, P262, P264, P264+P265, P270, P271, P272, P280, P301+P316, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P321, P330, P332+P317, P333+P317, P337+P317, P361+P364, P362+P364, P363, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (84.6%)
• Acute Tox. 4 (15.4%)
• Acute Tox. 3 (23.1%)
• Acute Tox. 4 (15.4%)
• Skin Corr. 1B (76.9%)
• Skin Irrit. 2 (23.1%)
• Skin Sens. 1 (23.1%)
• Eye Dam. 1 (61.5%)
• Eye Irrit. 2 (23.1%)
• Acute Tox. 4 (15.4%)

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