443778
Sigma-Aldrich

1-Methyl-2-pyrrolidinone

ACS reagent, ≥99.0%

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Synonym

1-Methyl-2-pyrrolidone

N-Methyl-2-pyrrolidone

M-PYROL^™

NMP

Molecular Formula

C₅H₉NO

Molecular Weight

99.13

CAS Number

872-50-4

Beilstein Registry Number

106420

MDL number

MFCD00003193

PubChem Substance ID

24868075

EG/EC Number

212-828-1

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Descriptions

Packaging

1, 2 L in glass btl

20 L in steel drum

500 mL in glass btl

Legal Information

M-PYROL is a trademark of GAF Corp.

Properties

grade

ACS reagent

vapor density

3.4 (vs air)

vapor pressure

0.29 mmHg ( 20 °C)

0.99 mmHg ( 40 °C)

assay

≥99.0%

autoignition temp.

518 °F

expl. lim.

9.5 %

total impurities

≤0.01% Free amines (as CH₃NH₂)

≤0.05% water

color

≤50(APHA)

refractive index

n20/D 1.47(lit.)

202 °C(lit.)

81-82 °C/10 mmHg(lit.)

−24 °C(lit.)

density

1.028 g/mL at 25 °C(lit.)

anion traces

chloride (Cl^-): ≤1 ppm

References

Merck

Merck 13,6140

Beilstein

Beil. 21,V,6,321

Fieser

Fieser 1,696 / Fieser 2,281 / Fieser 9,316

reference

Aldrich MSDS 1, 1304:A / Corp MSDS 1 (2), 2433:A / FT-IR 2 (1), 1337:B / FT-IR 1 (1), 789:C / FT-NMR 1 (1), 1286:A / IR-Spectra (3), 468:F / IR-Spectra (2), 415:G / NMR-Reference 2 (1), 662:A / RegBook 1 (1), 923:E / Sax 6, 1924 / Sigma FT-IR 1 (2), 749:D / Structure Index 1, 143:C:4 / Vapor Phase 3, 788:D

Safety

Hazard Codes

Risk Statements

36/38

Safety Statements

WGK Germany

RTECS

UY5790000

UEL

9.50%

LEL

1.30%

Flash Point(F)

195.8 °F

Flash Point(C)

91 °C

3-8-10

Related Categories

... Amber Glass Bottles > ACS Grade

... Carbon Steel Cans with NPT Threads > ACS Grade

... Solvents > ACS Grade Solvents

MSDS

Specification Sheet

Certificate of Analysis

Certificate of Origin

More Information