443778

1-Methyl-2-pyrrolidinone

ACS reagent, ≥99.0%

• Synonym(s): 1-Methyl-2-pyrrolidone, N-Methyl-2-pyrrolidone, NMP
• 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: 12352005
• PubChem Substance ID: 329756501
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• vapor density: 3.4 (vs air)
• vapor pressure: 0.29 mmHg ( 20 °C); 0.99 mmHg ( 40 °C)
• Assay: ≥99.0%
• form: liquid
• autoignition temp.: 518 °F
• expl. lim.: 9.5 %
• impurities: ≤0.01% Free amines (as CH₃NH₂); ≤0.05% water
• color: APHA: ≤50
• refractive index: n20/D 1.47 (lit.)
• pH: 7.7-10.0 (20 °C, 100 g/L)
• bp: 202 °C (lit.); 81-82 °C/10 mmHg (lit.)
• mp: −24 °C (lit.)
• solubility: acetone: miscible(lit.); alcohol: miscible(lit.); benzene: miscible(lit.); chloroform: miscible(lit.); ethyl acetate: miscible(lit.); water: miscible(lit.)
• density: 1.028 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤1 ppm
• SMILES string: CN1CCCC1=O
• InChI: 1S/C5H9NO/c1-6-4-2-3-5(6)7/h2-4H2,1H3
• InChI key: SECXISVLQFMRJM-UHFFFAOYSA-N

Description

Application

1-Methyl-2-pyrrolidinone may be used as:

• An alternative eluent to THF in the size exclusion chromatography (SEC) based resolution of coal-derived liquids.
• Reaction medium to prepare 2-aryl and 2-alkyl benzothiazoles.
• A solvent in the ultrasonic preparation of metal organic framework (MOF-177) crystals.

It may be used to synthesize single-phase chalcopyrite CuInSe₂ nanocrystals and potassium 3-methyl-2-oxo-pyrrolidinenitronate.

Packaging

View returnable container options.

Safety Information

• Pictograms: GHS07,GHS08
• Signal Word: Danger
• Hazard Statements: H315 - H319 - H335 - H360D
• Precautionary Statements: P202 - P261 - P264 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• 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