TCS Industries Limited (China-sourced API supplier) supplies N-Methylpyrrolidone — Pharmaceutical Excipient CAS 872-50-4 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | N-Methylpyrrolidone |
|---|---|
| Structural Formula |  |
| CAS Number | 872-50-4 |
| Molecular Formula | C₅H₉NO |
| Molecular Weight | 99.13 g/mol |
| InChIKey | SECXISVLQFMRJM-UHFFFAOYSA-N |
| SMILES | Available on request where applicable |
| Appearance | Colourless to slightly yellow liquid |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
N-Methylpyrrolidone (CAS 872-50-4), abbreviated NMP, is a polar aprotic solvent with the formula C₅H₉NO (MW 99.13). It is a colourless to slightly yellow liquid with a mild amine odor, completely miscible with water and most organic solvents. NMP has strong solvency, high boiling point (202 °C), low vapor pressure, and high chemical stability, making it suitable for demanding industrial applications including lithium-ion battery electrode coating, electronics cleaning, and polymer processing.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies NMP in technical, electronic, and battery grades for global procurement programs.
> Applications
Lithium-ion battery electrode coating solvent
NMP is the standard solvent for dispersing PVDF binder and active cathode materials (NCM, LFP, NCA) in lithium-ion battery electrode slurry preparation. It is used in electrode coating and subsequently recovered by evaporation and condensation. NMP purity (water content, metals) directly affects electrode coating quality and battery performance. Lee et al. (J Power Sources, 2013, 244:450–455) evaluated the effect of NMP quality on PVDF binder dissolution and electrode slurry rheology.
Electronics and industrial cleaning solvent
NMP is used for photoresist stripping in semiconductor manufacturing, paint stripping (replacement for methylene chloride), graffiti removal, and industrial parts cleaning. Its high solvency and low volatility (flash point 91 °C) make it effective for removing cured coatings and adhesive residues. Electronic-grade NMP requires ultra-low metals and particles.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for N-Methylpyrrolidone with buyers in Germany, France, Italy, Spain, the United Kingdom, the United States, Canada and Australia.
- Evaluation and commercial quantities: 25 L cans for qualification; 200 L drums, IBC, and ISO tank for production. Technical, battery, and electronic grades available.
- Pallet quantities and production campaigns: repeat supply is coordinated against packaging, lead time, annual demand and destination-market import requirements.
> Quality & Documentation
Key specification parameters include assay (≥99.5% for technical, ≥99.9% for battery/electronic grade), water content (≤0.03% for battery grade), colour (≤10 APHA), metals (Fe, Na, K, Ca at ppb level for battery grade), particles, UV absorbance, amine value, and specific gravity (1.028–1.030). COA and MSDS are standard.
> Packaging
NMP is a stable liquid (m.p. -24 °C, b.p. 202 °C, flash point 91 °C). Standard packaging includes 200 L steel or stainless steel drums and 1000 L IBC. ISO tank for bulk shipments. Not classified as dangerous goods for transport. Store in a well-ventilated area protected from moisture. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by specification, packaging and destination. Common commercial discussions use 25 kg bag/drum formats, pallet quantities and production-campaign planning; smaller samples may be reviewed for qualified formulation teams.
> Regulatory & Compounding Context
NMP is REACH-registered and classified as Toxic to Reproduction Category 1B (H360D) in the EU — subject to SVHC restrictions and authorization requirements (REACH Annex XIV, sunset date applies). OEL: 10 ppm (EU OEL, binding). Transport: not classified as dangerous goods (flash point 91 °C). Buyers must confirm REACH authorization status and workplace exposure compliance for their jurisdiction.
> Alias Index
- IUPAC: 1-Methyl-2-pyrrolidinone
- CAS Number: 872-50-4
- Formula: C₅H₉NO (MW 99.13)
- Common names: NMP, N-Methylpyrrolidone, 1-Methyl-2-pyrrolidone, M-Pyrol
- Physical properties: b.p. 202 °C, flash point 91 °C, density 1.028 g/mL
- EU classification: Repr. 1B (H360D), SVHC
- InChIKey: SECXISVLQFMRJM-UHFFFAOYSA-N
- Commercial request terms: NMP battery grade, N-methylpyrrolidone electronic, electrode coating solvent, photoresist stripper, TCS Industries Limited
> FAQ
Is NMP an SVHC under REACH?
Yes. NMP is identified as a Substance of Very High Concern (SVHC) due to reproductive toxicity classification (Repr. 1B, H360D). It is on the REACH authorization list (Annex XIV). Industrial users in the EU must hold or apply for authorization. Confirm the current authorization status and sunset date before procurement.
What documents are available for N-Methylpyrrolidone orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Do you supply N-Methylpyrrolidone to Germany, France and Spain?
Yes. We support B2B buyers in Germany, France, Italy, Spain, the United Kingdom, the Netherlands, Poland and Switzerland, subject to route and document review.
Do you supply the United States, Canada and Australia?
Yes. We review the United States, Canada, Australia and New Zealand for project supply, import documents, packaging and logistics planning before quotation.
What is battery-grade NMP?
Battery-grade NMP has ≥99.9% purity, water content ≤0.03% (300 ppm), and ppb-level metal contamination (Fe, Na, K, Ca, Cu, Zn). These specifications ensure clean electrode coating without metal particle contamination that could cause internal short circuits in lithium-ion cells.
Is NMP recovered and recycled in battery manufacturing?
Yes. NMP is evaporated from the coated electrode, condensed, purified and recycled in closed-loop recovery systems. Recovery rates exceed 95%. Recycled NMP must meet the same purity specifications as virgin material. NMP recovery is both an economic and environmental requirement in battery electrode production.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is N-Methylpyrrolidone packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
What are alternatives to NMP in battery manufacturing?
Water-based electrode coating (using CMC/SBR binder instead of PVDF/NMP) is under development for sustainability reasons. However, NMP/PVDF remains dominant for cathode coating due to performance advantages. Aqueous processing is more established for anode (graphite) coating. Confirm formulation requirements before selecting solvent system.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.