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Lithium battery additives

Diethyl carbonate

CAS number

105-58-8

Molecular formula C5H10O3
Product name Diethyl carbonate
Molecular Structure

Appearance:colourless liquid with a mild odour

Density:0.975

Boiling Point:126-128ºC

Melting Point:-43ºC

Flash Point:33ºC

Refractive Index:1.383-1.385

Water Solubility:Negligible

Stability:Stable. Flammable. Incompatible with strong acids, strong bases, reducing agents, oxidizing agents. Protect from moisture.

Storage Condition:Flammables area

Vapor Density:4.1 (vs air)

Vapor Pressure:10 mm Hg ( 23.8 °C)


CAS NO: 105-58-8


N,N-Dimethylpiperazine (DMP) is an organic compound with a chemical formula of C5H12N2. It is a colorless, hygroscopic liquid with a slight amine-like odor. It is miscible with water and most common organic solvents. DMP is mainly used as a monomer in the synthesis of polymers and amines, often used in coatings, adhesives, and cross-linked epoxy and urethane resins. In addition, DMP can also be used in cosmetic products as preservatives and humectants, and in the oil field as a demulsifying agent.


DMP is composed of dimethylpiperazine molecules, each of which has two methyl groups and one nitrogen atom attached to a piperazine ring. The molecular weight of DMP is 104.16 g/mol, and its melting point is 10 °C. It decomposes at 121 °C and has a flash point of 90-120°F. DMP is an flammable compound and may cause irritation to skin and eyes. Ingestion of the product may cause nausea, vomiting and other digestive disorders.


DMP is synthesized by the nucleophilic displacement reaction between piperazine and a halogen oxide, usually bromine oxide, but also chloroform or iodine oxide. The reaction is done in either a single-step or a two-step process. The two-step process involves an intermediate step in which the halogen oxide reacts with the base piperazine to form a piperazine halide. The halide then reacts with another molecule of piperazine to produce the final product.


DMP is used as an intermediate in the synthesis of a wide range of compounds, including amines and polymers. It is also used as a catalyst in the production of paint, adhesives, coatings and lubricants. DMP is also used as a preservative and humectant in cosmetics and personal care products. In addition, DMP can also be used as a demulsifying agent in the oil field for the separation of oil and water in drilling muds.


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