Materials / grade-specific review
Ethylene Carbonate (EC)
Battery-grade cyclic carbonate, ≥99.9% by GC — the film former that every graphite anode depends on.
APPLICATION & GRADE
Grade / designation: SZ-M1-SV02
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
Electrolyte blending
SEI formation studies
Graphite half-cell assembly
Custom electrolyte formulation
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
Ethylene carbonate is the one solvent a graphite cell cannot do without. It reduces irreversibly on the anode surface in the first charge, building the SEI that passivates graphite for the rest of the cell’s life. Without it, the electrolyte decomposes continuously and the cell has no cycle life at all.
It is a solid at room temperature, melting at 36–38 °C, which is why electrolyte plants melt it before blending. Warm the sealed container to 40–45 °C until fully liquid and mix thoroughly — the solid and liquid phases have different compositions, so a partly melted drum gives an off-specification blend.
Documentation, controls and care
Quality controls
- Certificate of analysis per batch
- Moisture by Karl Fischer, reported per lot
- Trace metal screening
- Retained samples held for 12 months
Handling & storage
- Warm sealed containers to 40–45 °C to melt before dispensing; never open partially melted material.
- Hygroscopic — dispense under dry air or argon and reseal immediately.
- Store at 15–30 °C away from oxidisers; keep away from ignition sources.
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
| Chemistry | Ethylene carbonate, cyclic carbonate |
|---|---|
| Purity (GC) | ≥99.9% |
| Water content | ≤20 ppm (Karl Fischer) |
| Melting point | 36–38 °C |
| Boiling point | 248 °C |
| Density | 1.32 g/cm³ at 40 °C |
| Colour | ≤20 APHA |
| Chloride | ≤5 ppm |
| Typical blend ratio | 25–35 vol% |
| Packaging | 1 L / 4 L / 20 L, nitrogen-capped |
Grade & packaging options
Custom particle size or purity windows
Pilot and production quantities
Technical review call with our materials team
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 | 50 mL / 250 mL septum bottle
Pilot pack | 1 L / 5 L nitrogen-capped container
Production pack | 20 L drum, argon blanket
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