DMAC is a dipolar aprotic solvent used for many organic reactions and industrial applications. It is a versatile solvent due to its high boiling point and good thermal and chemical stability.
1. Acrylic fibres DMAC is applied as solvent in wet spinning processes for the production of acrylic fibres.
2. Elasthane fibres In the production of polyurethane-based elasthane fibres, DMAC is the solvent of choice given its evaporation speed, whether it is used in wet or dry spinning processes.
3. Pharmaceuticals DMAC can be used both as a solvent and as a reagent in the production of various pharmaceuticals. In the production of novel x-ray contrast media, DMAC is used as a solvent. Cephalosporins, which are among one of the leading classes of antibiotics, are partly produced from derivatives of 7-ADCA (7-aminodeacetoxy-cephalosporanic acid). DMAC is used in the manufacturing process.
4. Various polymers DMAC is a good solvent for polyimide resins, both in coating and film production. It is also the ideal solvent for the production of dialyser membranes, based on polysulfones. A mixture of DMAC and lithium chloride is a useful solvent for cellulose fibres in several applications.
Hydrolysis in the Presence of Strong AcidsCH3CON(CH3)2 + H2O + HCI -> CH3COOH + (CH3)2NH.HCI
Saponification in the Presence of Strong BasesCH3CON(CH3)2 + NaOH -> CH3COONa + (CH3)2NH
Alcoholysis in the Presence of Hydrogen IonsCH3CON(CH3)2 + ROH -> CH3COOR + (CH3)2NH
Viscosity (at 25°C, 15w% solution (mPa.s= cP))
Acryloid®(a) A-21 A-107 B-72
23 23 20
Lucite®(b) 44 45 46
26 38 30
Epon®(c) 1001 1002 1004 1007
5 6 7 10
Half sec butyrate EAB-500-1(d) EAS-171-2(d)
555 950 1275
VYHH(f) VAGH(f) VMCH(f) Geon® 121(g) Geon® 101(g)
52 53 48 230 3500
(a) Rohm and Haas (b) Reduced to 5%w% (c) DuPont (d) Shell Chemicals (e)Cytec Technology Corp. (f) Union Carbide (g) BF Goodrich
DMAC is completely miscible with water, ethers, esters, ketones and aromatic compounds. Unsaturated aliphatics are highly soluble but saturated aliphatics have a limited solubility.
33 g / 100 g DMAc
31 g / 100 g DMAc
16 g / 100 g DMAc