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What is Dimethylacetamide DMA in organic chemistry?

Mar 13, 2026 Leave a message

CAS 127-19-5 Dimethylacetamide (DMA or DMAc) is a high-boiling (165°C),colorless, miscible polar aprotic solvent with the formulaCH3C(O)N(CH3)2. Dimethylacetamide solvent is widely used in organic synthesis, pharmaceutical manufacturing, and polymer production.

 

Dimethylacetamide Specification Table

Chemical name Dimethylacetamide
Abbreviation DMA / DMAC
CAS Number 127-19-5
Molecular Formula C4H9NO
Molecular Weight 87.12 g/mol
Appearance Colorless transparent liquid
Boiling Point 165–166°C
Solubility Miscible with water and most organic solvents

 

Dimethylacetamide, the full name is N,N-dimethylacetamide (chemical formula: CH3C(O)N(CH3)2, abbreviated as Dmac or DMA. A commonly used aprotic polar solvent. Colorless transparent liquid, flammable. Can be used with Organic solvents such as water, alcohol, ether, ester, benzene, chloroform and aromatic compounds can be mixed at will. It is used in pharmaceuticals, synthetic resins, and is also used as a solvent for polyacrylonitrile spinning and the extraction of styrene from the carbon eight fraction. Distilled solvents, etc. are produced by the action of diamine and acetyl chloride.

 

 

What is Dimethylacetamide DMA in organic chemistry?

In organic chemistry, DMAc primarily serves as a highly efficient reaction solvent. As a polar non-protonic solvent, it finds extensive application in the following areas:
Nucleophilic Substitution Reactions: DMAc stabilizes reaction intermediates without providing protons, thereby effectively promoting the reaction process. It is commonly used in SN2 reactions, coupling reactions, and acylation reactions.

 

Polymer Synthesis: DMAc is extensively employed to dissolve polymers and monomers, playing a crucial role in the production of polyacrylonitrile fibers, polyimide materials, and polyurethane products.

 

Pharmaceutical Synthesis: High-purity DMAc is widely utilized in the preparation of active pharmaceutical ingredients (APIs), encompassing the synthesis of antibiotic intermediates, antiviral intermediates, and peptide compounds.

 

Industrial Applications of Dimethylacetamide DMA

Pharmaceutical Industry
Dimethylacetamide CAS 127-19-5 is used as a reaction solvent for active pharmaceutical ingredient synthesis and intermediates.

 

Synthetic Fibers

DMA/DMAC is a key solvent in the production of acrylic and spandex fiber products.

 

Coatings and Resins
DMA enhances polymer solubility and coating uniformity.

 

Agricultural Chemicals
N,N-Dimethylacetamide is used in the synthesis of pesticide and herbicide intermediates.

 

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