N-Methyl-2-Pyrrolidone (NMp): A Strongly Polar Aprotic Solvent

1-methyl-2-pyrrolidone, also known as N-methyl-2-pyrrolidone (NMp), is a strongly polar aprotic solvent with a polarity of 4.09 D. It is a colorless liquid at room temperature with a unique combination of physicochemical properties.

NMp has a high boiling point, and low freezing point, and is miscible with water at all temperatures. It has good solvency for a wide range of organic and inorganic compounds and is used in the petrochemical, polymer, and battery industries as a solvent.

NMp is prone to decomposition reactions when it encounters air and water during use. In the absence of water and air, the decomposition temperature is about 350°C.In the presence of oxygen and water at the same time, NMp can undergo hydrolysis and oxidation reactions at a low temperature of about 120-200°C.

N-Methyl-2-Pyrrolidone (NMp): Mechanisms And Applications

NMp can cause skin irritation and rapidly permeate through intact skin. NMp-based slurries also present safety, health, and environmental hazards.

How does strong polarity 1-methyl-2-pyrrolidone?

N-Methyl-2-pyrrolidone (NMp) is a polar aprotic solvent with a strong affinity for H2S and CO2. It is a colorless liquid at room temperature that is miscible with water and most common organic solvents. NMp has a log Kow of −0.54 and is denser than water.

NMp has high polarity and high solvency power and can dissolve organic and inorganic compounds equally well or better than chlorofluorocarbon solvents. It has been reported to increase the solubility and permeability of several drugs.

NMp is used in various industrial fields as a cleaning or release agent, including:

  • Electronics: Wax, flux removal, burr removal, electronic parts cleaning, semiconductor parts cleaning, solvent for lithium battery manufacturing
  • Automotive and coatings: Mold cleaning, metal (parts) cleaning, coatings solvent
  • Chemical: Extract agent (acetylene, BTX, butadiene), synthetic resin surface coating solvent, reaction solvents (ppS, polyimide, etc.), equipment washing
  • Optical: plastic lens manufacturing equipment cleaning

NMp is replacing 1,1,1-trichloroethane in metal cleaning applications due to the worldwide environmental pollution problems associated with chlorinated solvents.

People May Ask

Does Greater Polarity Imply Greater Solubility?

This refers to an object's ability to dissolve in another object. Polar materials are more soluble in and attracted to polar solvents. Nonpolar substance is more soluble in and attracted to nonpolar stuff.

What Are Some Decent Oils?

Because it can dissolve both polar and nonpolar ubtance, acetone is a good solvent whereas other solvents can only dissolve one or the other. Because acetone's chemical composition contains both polar and nonpolar elements, it can be used with both organic and inorganic substances.

How May The Polarity of An Olvent Be Changed?

By adjusting the ratio of polar to non-polar solvent in the mixture, the polarity of the developing solvent is adjusted. The ideal solvent should have an Rf value of between 0.3 and 0.7 for the desired chemical and at least 0.1 between the desired compound and any impurity.

What Distinguishes An HDPE Glove from An LDPE Glove?

High-density polyethylene (HDPE), the tougher variety of the plastic, is one of the many varieties of polyethylene. Low-density polyethylene (LDPE) is used to create plastic shopping bags, drinking bottles, and detachable gloves. It is thinner and more opaque than HDPE.

Does Toluene Dissolve PVC?

Despite the similarities in the dH P of PVC (21.9), toluene (18.2), ethyl acetate (18.1), and N,N-dimethylformamide (24.9), the PVC did not dissolve in either toluene or ethyl acetate because the values of dd, dp, and dh were noticeably different.

Why Is HDPE Superior to PVC?

Durability. PVC is a long-lasting vinyl polymer, whereas HDPE is a petroleum-based polyethylene thermoplastic. Both pipes are being heated to a great degree. HDPE has been shown to be more durable when compared to other materials' failure rates when exposed to conditions like rain, wind, heat, or cold.

Protective Nitrile Gloves against Organic Solvents?

The nitrile glove is also resistant to both acids and bases as well as organic solvents. A barrier made of nitrile is provided between the user's hand and potentially hazardous petroleum products like oil, fuel, and grease.

What Kind of Glove Is Appropriate for The Use of Oil?

PVA, or polyvinyl alcoholgood for chlorinated and aromatic oils.

What Are The Various Nitrile Glove Grades?

Food-grade, industrial trial-grade, or medical-grade (sometimes known as examination-grade) nitrile gloves are all available. Despite using the same raw materials, there may be a noticeable difference in the thickness, production process, and general material quality.

Describe NMP Medical.

Any prescribing carried out by a healthcare practitioner other than a doctor or a dentist is referred to as non-medical prescribing (NMP).

Strong Polarity 1-Methyl-2-Pyrrolidone Products

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Top Reviews

Consistent Customer

It's quite convenient that the power supply has a range of connector tips, which eliminates the need to purchase separate power supplies for different devices. With the reversible tips and variable voltage output, you can address a broad range of applications, including "center positive" and "center negative" polarity kinds. I use it with a sound meter I bought, which would have cost me a lot more if it had a power plug that was exclusive to it. I have a collection full of old adaptor plugs, but often the original devices they were paired with are long gone, and they don't work with anything else I own! Those problems are fixed by this product. incredibly happy.

Tommaso Giannetti

I was unable to locate the adaptor for my older Casio electric piano. The connectors on my other reverse polarity adapter wouldn't fit the piano insert securely enough to stay in without needing to be held in place or taped on. I brought it home after asking at Guitar Center what adapters they use, but it didn't work. I took the piano to Best Buy, made some inquiries, and purchased what they recommended, but it didn't work. When I returned it to Guitar Center to exchange the adapter I purchased, a man gave me a long lecture about how Casio occasionally uses its own "special adapters"... His coworker then awkwardly turns around and stares at the piano, saying, "Dude, you need a reverse polarity adapter." I went to ZOLSEM and looked for a piano. This one was priced similarly to the others, so I bought it. I can now play my piano without having to change the adapter every three minutes. Overly drawn-out review? Yes, it takes too long to locate the appropriate adaptor. Invest on this one and spare yourself the trouble. PS: It's extremely easy for the polarity to travel both ways. Never get


Any 5.5x2.1mm round-tip power cable has its polarity reversed by using this. Considering that this one is just tip-positive, you must also have the Belker Universal 5V DC Power Cable USB kit. It is possible to use tip-negative devices with that universal set and this converter cable. Thank you for making this available! That it's required disgusts me about the electronics industry! It is time for the industry to stop using all USB-A to Round-Tip power cables. We all have a ton of USB-A to microUSB or miniUSB cables laying around, so it won't be a big concern if one breaks or disappears. However, because the sector only wants to standardize on having a USB-A connector on one end of their...

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