N N-DIMETHYLACETAMIDE

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.

Molecular Weight: 87.12. Empirical Formula: C₄H₉NO. linearFormula: CH₃CON(CH₃)₂. vapor density: 3 (vs air). Quality Level: 200. 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. Pictograms: GHS07,GHS08. Signal Word: Danger. Hazard Statements: H312 + H332 - H319 - H360D. Precautionary Statements: P202 - P280 - P302 + P352 + P312 - P304 + P340 + P312 - P305 + P351 + P338 - P308 + P313. 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.