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38840

Sigma-Aldrich

N,N-Dimethylacetamide

puriss. p.a., ≥99.5% (GC)

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About This Item

Linear Formula:
CH3CON(CH3)2
CAS Number:
127-19-5
Molecular Weight:
87.12
Beilstein:
1737614
EC Number:
204-826-4
MDL number:
MFCD00008686
UNSPSC Code:
12352111
PubChem Substance ID:
329755790
NACRES:
NA.21

vapor density

3 (vs air)

vapor pressure

2 mmHg ( 25 °C)
4 mmHg ( 38 °C)

grade

puriss. p.a.

Assay

≥99.5% (GC)

form

liquid

autoignition temp.

914 °F

expl. lim.

1.8 %, 100 °F
11.5 %, 160 °F

impurities

≤0.1% water

evapn. residue

≤0.005%

refractive index

n20/D 1.437 (lit.)
n20/D 1.437

pH

4 (20 °C, 200 g/L)

bp

164.5-166 °C (lit.)

mp

−20 °C (lit.)

density

0.937 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤0.5 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

CN(C)C(C)=O

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 widely used to compose the solvent mixtures for cellulose. Static and dynamic light scattering studies of the cellulose dissolved in varying concentrations of DMAc/LiCl mixtures have been reported.

Application

N,N-Dimethylacetamide (DMAc) may be used to compose the solvent system along with lithium chloride (LiCl) for the dissolution of commercial rayon grade cellulose. DMAc/LiCl solvent mixtures have been used for the preparation of chitin, cellulose and polyimide fibers and films.

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Danger

Hazard Statements

H312 + H332,H319,H360D

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

Certificates of Analysis (COA)

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B Tosh et al.
Carbohydrate research, 327(3), 345-352 (2000-08-17)
Commercial rayon grade cellulose was dissolved in the lithium chloride-N,N-dimethylacetamide (LiCl-DMAc) solvent system and esterified with acetic anhydride using p-toluenesulfonyl chloride (p-TsCl) and pyridine as catalysts. The reaction temperature was varied from 28 to 70 degrees C and the time
Solution studies of cellulose in lithium chloride and N,N-dimethylacetamide.
McCormick CL, et al.
Macromolecules, 18(12), 2394-2401 (1985)
Solutions of cellulose in N, N-dimethylacetamide/lithium chloride studied by light scattering methods.
Roder T, et al.
Polymer, 42(16), 6765-6773 (2001)
Fen Ran et al.
Acta biomaterialia, 7(9), 3370-3381 (2011-06-11)
An amphiphilic triblock co-polymer of poly(vinyl pyrrolidone)-b-poly(methyl methacrylate)-b-poly(vinyl pyrrolidone) (PVP-b-PMMA-b-PVP) was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. The block co-polymer can be directly blended with polyethersulfone (PES) using dimethylacetamide (DMAC) as the solvent to prepare flat sheet and
André H Gröschel et al.
Nature communications, 3, 710-710 (2012-03-20)
Hierarchical self-assembly offers elegant and energy-efficient bottom-up strategies for the structuring of complex materials. For block copolymers, the last decade witnessed great progress in diversifying the structural complexity of solution-based assemblies into multicompartment micelles. However, a general understanding of what
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