Materials / grade-specific review
Battery-Grade NMP
N-methyl-2-pyrrolidone with controlled water and non-volatile residue, for dissolving PVDF and preparing cathode slurries.
APPLICATION & GRADE
Grade / designation: SZ-M1-SV01
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
PVDF dissolution for cathode slurry
Carbon black and CNT pre-dispersion
Separator coating formulation
Electrode paste viscosity adjustment
Grade & supply review
Purity grade from 99.5% to 99.95% by GC
Water limit down to 10 ppm
Pack size from 100 mL to 20 L drum
Documentation package for regulated markets
Representative image. Actual material appearance varies by grade and lot — request a current photograph or sample.
About this material
NMP is the solvent almost every cathode slurry is built on. It dissolves PVDF completely at 40–60 °C, has a high boiling point that keeps the slurry stable through mixing and holding, and wets active material and carbon black surfaces well enough to produce a uniform coating. It is also strongly hygroscopic, which is the property that matters most when specifying a battery grade.
Absorbed water travels with the slurry into the dried electrode, and from there into the cell. For that reason battery-grade NMP is specified on water content and non-volatile residue rather than on purity alone — a nominal 99.9% material with 3000 ppm water is not usable. This grade is controlled to ≤500 ppm water and ≤10 ppm NVR, packed under dry conditions.
Documentation, controls and care
Quality controls
- Water by Karl Fischer on every lot
- GC purity and NVR reported
- Packed under nitrogen blanket
- Retained samples held for 12 months
Handling & storage
- Hygroscopic — reseal immediately after dispensing and blanket with dry gas.
- Use in a ventilated area; NMP is a reproductive toxicant and requires appropriate controls.
- Store away from oxidisers and ignition sources below 30 °C.
Grades on this page are references used to describe capability; they are not a fixed product list.
Specification values are typical windows compiled from public technical references and supplier
datasheets, and are provided for selection guidance only. The specification delivered against your
order is agreed in writing, and measured values are confirmed on the batch certificate of analysis.
Materials listed here may be hazardous; they must be handled by qualified personnel under applicable
regulations.
Material specifications
| Chemical name | N-Methyl-2-pyrrolidone (NMP) |
|---|---|
| Purity (GC) | ≥99.9% |
| Water content | ≤500 ppm (Karl Fischer) |
| Non-volatile residue | ≤10 ppm |
| Colour | ≤20 APHA |
| Density | 1.028–1.032 g/cm³ at 25 °C |
| Boiling point | 202 °C |
| Flash point | 91 °C (closed cup) |
| Appearance | Clear, colourless liquid |
| Solubility | Miscible with water and common organic solvents |
| Typical use | PVDF dissolution, 5–8% binder solution |
| Shelf life | 24 months in unopened packaging |
Grade & packaging options
Anhydrous grade for moisture-critical work
Recovery and recycling service
Water-based binder systems (no NMP)
Bulk tanker supply
Supply boundaries
Reference grade, not a fixed catalogue item. Capacity, particle size, coating, purity and packaging are set to the specification your process needs — the delivered grade may differ from the values shown here.
Packaging & handling
Laboratory pack | 500 mL / 1 L glass bottle
Standard pack | 5 L / 25 L plastic drum
Bulk pack | 200 L steel drum
Information for material review
Cell chemistry, format and voltage window
Target capacity, areal loading or formulation
Process route — NMP/PVDF, aqueous, or dry
Quantity per lot, packing and delivery schedule
Training in China
Training at our China facility is available for this product. Scope, schedule and language are agreed for each project.
Related products
LET’S REVIEW YOUR MATERIAL REQUIREMENTS
Discuss your material specification.
Share the intended use, required grade, quantity and supporting documents you need to review.
support@szotech.com