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Sigma-Aldrich

N,N-Dimethylacetamide

for synthesis

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Synonym(s):
N,N-Dimethylacetamide, Acetic acid dimethylamide, Acetyldimethylamine, DMA
Linear Formula:
CH3CON(CH3)2
CAS Number:
Molecular Weight:
87.12
MDL number:
EC Index Number:
204-826-4

vapor pressure

1.76 hPa ( 20 °C)

Quality Level

Assay

≥99% (GC)

form

liquid

autoignition temp.

400 °C

potency

5830 mg/kg LD50, oral (Rat)

expl. lim.

1.7-11.5 % (v/v)

pH

4 (20 °C, 200 g/L in H2O)

bp

165-166 °C/1013 hPa

mp

-20 °C

transition temp

flash point 64 °C

solubility

soluble >1000 g/L

density

0.94 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C4H9NO/c1-4(6)5(2)3/h1-3H3

InChI key

FXHOOIRPVKKKFG-UHFFFAOYSA-N

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General description

N,N-Dimethylacetamide (DMAc) is a water-miscible organic solvent used in the synthesis of styrene, vinyl resin, linear polyester, acrylic fiber, plastic, pesticide, and synthetic leather. It participates in dehydrogenation, dehydration, halogenation, deprotonation reactions and reductive carbonylation of transition metals. It can also act as catalysts, promoters, halogen/alkoxy or hydroxyl/halogen exchange mediators, reducing agents, and sources of the base.

Application

N,N-Dimethylacetamide is used as a solvent:
  • In the synthesis of poly(amide-hydrazide)s–graphene composites.
  • In the synthesis of N,N′-1,2-ethanediylbis-(4-hydroxy-pentanamide) and 4-hydroxy-N-(2- hydroxyethyl)-pentanamide based polyurethanes in presence of triethylamine catalyst.

Features and Benefits

N,N-Dimethylacetamide has :
  • High dissolution power of various substrate. 
  • High capacity to solvate anions.

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.940 - 0.942
Water (K. F.): ≤ 0.30 %
Identity (IR): passes test

Pictograms

Exclamation markHealth hazard

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Repr. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

Flash Point(F)

147.2 °F - closed cup

Flash Point(C)

64 °C - closed cup


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