N-Octyl Pyrrolidone NOP N-Octyl-2-pyrrolidone CAS 2687-94-7

Tree Chem N-Octyl Pyrrolidone (NOP) CAS 2687-94-7 is produced under advanced process control to ensure stable purity, precise color value, and minimal residual amine. With its excellent dispersing and penetrating properties, NOP serves as an efficient co-solvent and surfactant intermediate in multiple industrial sectors.

We manufacture and supply N-Octyl Pyrrolidone for applications in textile auxiliaries, cleaning agents, coatings, and agrochemical formulations, delivering consistent performance and reliable global shipment. For cooperation or technical consultation, please reach info@cntreechem.com.

Specification

Basic Information

Technical Specification

Applications

Coatings and Inks

• N-Octyl-2-Pyrrolidone (NOP) is extensively used as a high-boiling solvent, wetting agent, and coalescent in coatings and printing inks. Its strong solvency enables efficient dissolution of resins such as polyurethanes, epoxies, and acrylics, while its low volatility ensures uniform film formation and gloss retention during drying. NOP enhances pigment dispersion, improves substrate wetting, and prevents surface defects such as pinholes or orange peel.
• In high-solids and waterborne coatings, NOP acts as an excellent coalescing aid that balances viscosity and flow. It helps achieve a smoother surface finish, better color development, and improved long-term stability. Its compatibility with a broad range of binders and additives makes it a preferred choice in modern eco-friendly coatings and advanced ink systems.

Agrochemical Industry

• NOP is widely employed in agrochemical formulations as a co-solvent, emulsifier, and dispersing agent. It improves the solubility and stability of herbicides, fungicides, and insecticides, ensuring uniform distribution of the active ingredient throughout the formulation. Its amphiphilic molecular structure enables it to bridge the gap between polar and non-polar components, forming stable emulsions suitable for both water-based and solvent-based systems.
• When used in pesticide or foliar spray formulations, NOP enhances wetting, adhesion, and leaf surface coverage. It helps active ingredients penetrate plant tissues more efficiently, increasing bioavailability and improving overall pesticide effectiveness. It is also compatible with common agrochemical surfactants, improving storage stability and reducing crystallization or separation issues.

Personal Care and Cosmetics

• NOP functions as a multifunctional solvent and solubilizer in skincare and haircare formulations. It improves the dissolution of hydrophobic actives such as vitamins, plant extracts, and oils, allowing more uniform distribution in emulsions. Its strong affinity for both oil and water phases ensures product stability and an elegant sensory feel.
• In hair dyes, NOP acts as a penetration enhancer for colorants and conditioning agents. It stabilizes dye molecules, prevents fading, and contributes to uniform color development across hair strands. In creams, lotions, and serums, NOP enhances spreadability, reduces greasiness, and improves the overall application experience, supporting mild yet effective product formulations.

Industrial Cleaning and Surface Treatment

• NOP is a powerful solvent for industrial and household cleaning formulations. Its ability to dissolve oils, greases, waxes, and polymer residues makes it valuable in heavy-duty degreasing and precision-cleaning applications. NOP is less volatile and more environmentally acceptable compared to traditional aromatic solvents such as toluene or xylene.
• In metal surface treatment, NOP acts as a degreasing and wetting additive that removes contaminants without corroding metallic substrates. In electronics and machinery maintenance, it ensures residue-free cleaning while maintaining material compatibility. It is also widely used in detergent concentrates, textile scouring, and automotive cleaning fluids to improve soil removal and surface wetting.

Polymer and Fine Chemical Industry

• NOP serves as a reaction medium, solubilizer, and carrier in polymer synthesis and fine chemical production. It promotes the polymerization of high-performance materials such as polyurethanes, acrylics, and polyesters, offering improved molecular weight control and process consistency. Its strong solvency ensures complete dissolution of reactants and additives, leading to higher yield and product purity.
• In fine chemical manufacturing, NOP is utilized for the synthesis of specialty intermediates, catalysts, and heterocyclic compounds that require polar-aprotic conditions. It maintains stability under high-temperature and high-pressure environments, allowing reactions that demand stringent solvent performance. Its reusability and easy recovery also contribute to sustainable chemical processing.

Textile and Leather Industry

• NOP acts as a wetting, leveling, and penetration agent in textile dyeing, printing, and leather finishing. It enhances the diffusion of dyes and pigments into fibers or hides, improving color brightness, fastness, and uniformity. It helps prevent streaking and patchiness in large-scale continuous dyeing operations.
• In leather finishing, NOP facilitates the even absorption of tanning agents, softeners, and dyes, producing smoother texture and better hand-feel. It also improves flexibility and durability of finished leathers by promoting uniform chemical penetration and reducing surface brittleness.

Lubricants and Plasticizers

• NOP is used as a functional additive in lubricant and plasticizer formulations. It improves viscosity control, metal wetting, and oxidation stability. Its polarity enhances boundary lubrication and reduces friction in metal-to-metal contact applications. When combined with traditional base oils or esters, NOP enhances film strength and load-bearing capacity.
• In polymer plasticization systems, NOP acts as a compatibilizer that improves flexibility, transparency, and surface smoothness. It reduces processing temperature and energy consumption during extrusion or molding, making it ideal for PVC and elastomer processing.

Emerging and Specialty Applications

• NOP is increasingly being explored in new material development, such as in lithium battery electrolytes, composite resins, and high-performance adhesives. Its combination of high polarity, low volatility, and excellent solvency supports energy-storage and advanced-manufacturing processes. It also finds limited application in catalytic systems, nanomaterial dispersion, and high-purity chemical formulations, where its stability and solvency profile are critical for performance optimization.

Storage & Handling

• Store in a cool, ventilated, and dry warehouse away from sunlight and heat.
• Keep containers sealed and avoid contact with acids, bases, and oxidizing agents.
• Use corrosion-resistant containers and ensure equipment is dry before loading.
• Employ proper grounding during transfer to prevent static discharge.
• Recommended storage temperature: below 30 °C.

Usage Notice

• Use with adequate ventilation; avoid inhaling vapors or mist.
• Wear appropriate PPE: chemical-resistant gloves, splash goggles, long sleeves; wash exposed skin after handling.
• Keep away from strong oxidizers, strong acids/alkalis, and reactive metals; verify material compatibility before use.
• Prevent static build-up during transfer; ground/bond containers and equipment.
• Avoid contact with water in storage tanks and lines; keep loading systems clean and dry.
• In case of spill: contain with inert absorbent, collect into labeled containers; flush residue with plenty of water; dispose according to local regulations.
• First aid: move to fresh air if inhaled; rinse skin/eyes with water for ≥15 min; seek medical attention if irritation persists.
• Coating formulation: Resin blend 60%, pigment 25%, additives 10%, NOP 5% — enhances pigment dispersion, film formation, and surface gloss.
• Agrochemical emulsion: Active ingredient 30%, surfactant 15%, NOP 20%, water 35% — improves solubility and penetration on plant surfaces.
• Hair care cream: Oil phase 25%, water phase 65%, NOP 10% — enhances texture and active delivery in cosmetic formulations.
• Industrial cleaner: Solvent mixture 45%, surfactant 10%, NOP 10%, water 35% — efficiently removes grease and polymer residues.
• Polyurethane reaction medium: Polyol 1 mol, isocyanate 1 mol, NOP 20% — ensures uniform polymerization and stable reaction control.
• Textile dye bath: Dye 7%, NOP 5%, water 88% — enhances dye penetration and prevents uneven coloring.
• Leather finishing mixture: Fatliquor 40%, dye 10%, NOP 5%, water 45% — increases softness and color uniformity.
• Plasticizer blend: Phthalate ester 70%, NOP 10%, stabilizer 20% — improves flexibility and processability of plastics.
• Lubricant formulation: Base oil 80%, NOP 10%, additives 10% — enhances metal surface wetting and lubrication efficiency.
• Adhesive system: Polymer resin 60%, NOP 15%, crosslinker 5%, water 20% — provides improved bonding and application smoothness.

Packaging

• 180 kg galvanized drum
• Other packaging available on request