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Merck
CN

15780

Sigma-Aldrich

1-Methyl-2-pyrrolidinone

≥98.5% (GC)

Synonym(s):

1-Methyl-2-pyrrolidone, N-Methyl-2-pyrrolidone, NMP

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About This Item

Empirical Formula (Hill Notation):
C5H9NO
CAS Number:
872-50-4
Molecular Weight:
99.13
Beilstein:
106420
EC Number:
212-828-1
MDL number:
MFCD00003193
UNSPSC Code:
12190000

Key Documents

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vapor density

3.4 (vs air)

vapor pressure

0.29 mmHg ( 20 °C)
0.99 mmHg ( 40 °C)

Assay

≥98.5% (GC)

autoignition temp.

518 °F

expl. lim.

9.5 %

impurities

≤0.1% water (Karl Fischer)

refractive index

n20/D 1.47 (lit.)

bp

202 °C (lit.)
81-82 °C/10 mmHg (lit.)

mp

−24 °C (lit.)

density

1.028 g/mL at 25 °C (lit.)

SMILES string

CN1CCCC1=O

InChI

1S/C5H9NO/c1-6-4-2-3-5(6)7/h2-4H2,1H3

InChI key

SECXISVLQFMRJM-UHFFFAOYSA-N

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Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Danger

Hazard Statements

H315,H319,H335,H360D

Hazard Classifications

Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

195.8 °F - Pensky-Martens closed cup

Flash Point(C)

91 °C - Pensky-Martens closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
SZBA1880V
SZBA1880
SZBA3070V
SZB92450
SZBA3070

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Journal of medicinal chemistry, 55(2), 576-586 (2011-12-06)
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