High-purity options
Compare listed grades and current product-specific limits.
Electronic G2Electronic G3Electronic G4Electronic G5Battery & Energy Storage
Ethyl Methyl Carbonate (EMC)
CH₃OC(O)OC₂H₅ · CAS 623-53-0
Ethyl Methyl Carbonate (EMC) is considered for standard ec/dmc/emc (1:1:1) li-ion electrolyte. Battery teams normally qualify the solvent against their own chemistry, moisture budget, incoming-control method and dry-handling route before moving from sample to production scale.
A common starting point
Standard EC/DMC/EMC (1:1:1) Li-ion electrolyte
Molecular weight
104.10 g/mol
Boiling point
110 °C
Density
1.012 g/mL
✓High-purity options✓Batch documentation✓Flexible packaging review
Product identity
- CAS number
- 623-53-0
- Formula
- CH₃OC(O)OC₂H₅
- Boiling point
- 110 °C
- Density
- 1.012 g/mL
Product overview
A product route built around the application
Ethyl Methyl Carbonate is considered for processes that need a consistent material, controlled critical impurities and a supply format that can move from qualification to routine use. The grade should be selected against the actual process—not a generic purity claim.
Controlled attributes
Focus testing on the impurities and performance risks that matter.
Supply planning
Align sample, production pack, forecast and document route early.
Before you specify
A better enquiry starts with four answers
A higher grade is not automatically the better choice. The useful option fits the process, analytical method, packaging route and qualification plan without adding controls the application does not need.
01
What cell chemistry, formulation step and moisture limit apply?
02
Which trace ions or organic impurities are part of incoming QC?
03
How will the material move from container to dry room or blending vessel?
04
What sample, pilot and production volumes are planned?
Specification data
Compare the listed grade columns
This table is an indicative product overview for initial screening. Confirm the current controlled specification, test methods, reporting limits and available lot documentation before qualification or purchase.
| Parameter | Test method | Unit | G4 | G5 |
|---|---|---|---|---|
| Assay (GC) | GC-FID | % | ≥99.99 | ≥99.999 |
| Water (KF) | Karl Fischer | ppm | ≤20 | ≤10 |
| Total Metals | ICP-MS | ppb | ≤0.5 | <0.1 |
| Chloride (Cl⁻) | IC | ppb | ≤100 | ≤50 |
| Acidity | Titration | ppm | ≤5 | ≤2 |
Website values do not replace a signed sales specification. The agreed specification and lot-specific Certificate of Analysis govern supplied material.
Electronic grade context
Use the grade scale as a first comparison
SEMI C1 describes liquid-chemical grades and analytical procedures. A grade name helps organise a discussion; your process specification still decides which limits and methods are acceptable.
Electronic Grade Purity Comparison — SEMI C1 StandardG1 → G5
GradePurity (GC)Metals (ICP)ParticlesWater (KF)Process Node
G2
≥99.9%
G3
≥99.99%
G4
≥99.999%
G5
≥99.9999%
All grades tested by ICP-MS (28 elements), in-line LPC (ISO Class 3 fill), and Karl Fischer titration. G5 = SEMI C1 Tier D. Full CoA per lot. Request CoA template →
Where this product is used
Application routes for Ethyl Methyl Carbonate
These examples help with discovery. They are not claims of universal suitability; material compatibility, process performance and the controlled specification still need review.
Battery & energy storage
- Standard EC/DMC/EMC (1:1:1) Li-ion electrolyte
- NMC-811 long-range EV cell electrolyte
- Low-temperature battery electrolyte (-40°C capable)
- Cylindrical cell (18650, 21700, 4680) electrolyte
Laboratory & analytical
- Battery research solvent
- carbonate ester synthesis
Industrial & other
- EV battery gigafactory production
- energy storage system (ESS)
Representative application cases
A practical evidence route for Ethyl Methyl Carbonate
These are illustrative composite qualification scenarios, not named customer claims. Exact methods, limits and acceptance decisions belong to the customer’s controlled process.
Process-material second source
A manufacturer evaluates Ethyl Methyl Carbonate (EMC) against the material attributes that influence its reaction, formulation, extraction or cleaning result.
Evidence route
Specification comparison is followed by a representative trial, production-pack review and approval of the document route.
Pack and scale transition
A qualified small pack of Ethyl Methyl Carbonate (EMC) is considered for drum, IBC or another production presentation.
Evidence route
Container compatibility, transfer materials, sampling and receiving controls are reviewed before the pack route changes.
Manufacturing advantage
A controlled route from purification to final filling
The supply route for Ethyl Methyl Carbonate connects incoming-material review, product-specific treatment, controlled transfer, testing, filling and lot documentation. Exact equipment and controls depend on the qualified product and grade.
Purification
Product-specific separation or treatment route.
Filtration
Compatible filtration and controlled transfer.
Testing
Release against the agreed specification.
Clean filling
Pack, closure and lot identification review.
Quality assurance & documentation
Evidence your quality team can review
Documents are matched to the supplied product, grade, lot and destination. The links below request the current controlled version; they are not static files with uncertain revision status.
Certificate of Analysis
Lot-specific result or conformance format.
Request current file →Safety Data Sheet
Product- and market-specific hazard communication.
Request current file →Batch traceability
Connection between production, testing, pack and lot.
Request current file →Specification sheet
Agreed limits, units and referenced methods.
Request current file →
Packaging options
Choose the pack with the handling route in mind
Availability varies by grade and destination. Confirm container material, closure, headspace, connection, minimum order, dangerous-goods route and qualification-lot needs.
Qualification & laboratory packs
For evaluation, method work and lower-volume routine use.
1 L5 L
Drums & production packs
For regular production consumption and controlled dispensing.
20 L200 L
IBC & bulk routes
For higher-volume programmes after site, grade and logistics review.
IBC
Technical resources
Continue the technical review
Use application notes for context, then confirm current product documents before qualification.
Start a product review
Need a reliable supply route for Ethyl Methyl Carbonate?
Send the application, current specification, critical limits, pack, destination and forecast so the response can be technically useful.