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Merck
CN

38840

N,N-二甲基乙酰胺

puriss. p.a., ≥99.5% (GC)

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线性分子式:
CH3CON(CH3)2
化学文摘社编号:
分子量:
87.12
UNSPSC Code:
12352111
NACRES:
NA.21
PubChem Substance ID:
EC Number:
204-826-4
Beilstein/REAXYS Number:
1737614
MDL number:
Assay:
≥99.5% (GC)
Technique(s):
GC/GC: suitable
Bp:
164.5-166 °C (lit.)
Vapor pressure:
2 mmHg ( 25 °C), 4 mmHg ( 38 °C)
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InChI key

FXHOOIRPVKKKFG-UHFFFAOYSA-N

InChI

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

SMILES string

CN(C)C(C)=O

vapor density

3 (vs air)

vapor pressure

2 mmHg ( 25 °C), 4 mmHg ( 38 °C)

grade

puriss. p.a.

assay

≥99.5% (GC)

Quality Level

autoignition temp.

914 °F

expl. lim.

1.8 %, 100 °F, 11.5 %, 160 °F

technique(s)

GC/GC: suitable

impurities

≤0.1% water

evapn. residue

≤0.005%

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

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General description

N,N-二甲基乙酰胺(DMAc)广泛用于组成纤维素的溶剂混合物。对溶解在不同浓度的DMAc/LiCl混合物中的纤维素的静态和动态光散射研究已有报道。

Application

N,N-二甲基乙酰胺(DMAc)可与氯化锂(LiCl)一起组成溶剂体系,以溶解商业人造丝级纤维素。DMAc/LiCl溶剂混合物已用于制备几丁质、纤维素、以及聚酰亚胺纤维和薄膜。

pictograms

Health hazardExclamation mark

signalword

Danger

Hazard Classifications

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

存储类别

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


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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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
Solutions of cellulose in N, N-dimethylacetamide/lithium chloride studied by light scattering methods.
Roder T, et al.
Polymer, 42(16), 6765-6773 (2001)
Solution studies of cellulose in lithium chloride and N,N-dimethylacetamide.
McCormick CL, et al.
Macromolecules, 18(12), 2394-2401 (1985)
Tony Reid et al.
The Lancet. Oncology, 16(9), 1133-1142 (2015-08-25)
Epigenetic alterations have been strongly associated with tumour formation and resistance to chemotherapeutic drugs, and epigenetic modifications are an attractive target in cancer research. RRx-001 is activated by hypoxia and induces the generation of reactive oxygen and nitrogen species that
S Sood et al.
Theriogenology, 78(7), 1557-1569 (2012-09-18)
Three experiments were conducted to optimize the protocol for cryopreservation of emu sperm. Ejaculates were collected from trained male emus then diluted 1:1 and pooled before allocation to treatments and measured for sperm viability, motility, egg membrane penetration ability, membrane

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