Certificate of Analysis and technical specification for Methyl Ethyl Ketone (MEK) — CAS 78-93-3. Applies to all consignments of this product and grade.
| Product Name | Methyl Ethyl Ketone (MEK) |
|---|---|
| C.A.S. Number | 78-93-3 |
| Product Category | Solvents & Glycols |
| Product Group | Ketones |
| Grade / Standard | ≥99.5% Technical |
| Physical Form | Clear colorless liquid |
| Country of Origin | India |
| Packing | Standard export packing — bags, drums, carboys, IBC or ISO tank as applicable |
| Storage | Cool, dry, well-ventilated place in tightly closed original packing |
| S. No. | Test Parameter | Specification | Typical Result | Method |
|---|---|---|---|---|
| 1 | Description | Clear colorless liquid | Complies | Visual |
| 2 | Identification | Conforms to the structure of the substance | Complies | FTIR / Chemical test |
| 3 | Assay | Not less than 99.5 % w/w | 99.68 | Gas Chromatography |
| 4 | Purity (by GC) | Not less than 99.5 % (area) | 99.84 | Gas Chromatography |
| 5 | Colour (APHA / Pt-Co) | Not more than 10 | 6 | ASTM D1209 |
| 6 | Water Content | Not more than 0.05 % w/w | 0.0127 | Karl Fischer titration |
| 7 | Acidity (as acetic acid) | Not more than 0.002 % w/w | 0.0005 | Titrimetry |
| 8 | Residue on Evaporation | Not more than 0.001 % w/w | 0.0003 | Gravimetry |
| 9 | Specific Gravity at 25 °C | 0.802 – 0.808 | 0.8044 | Pycnometry / ASTM D4052 |
| 10 | Refractive Index at 20 °C | 1.3768 – 1.3808 | 1.3786 | Refractometry / ASTM D1218 |
This document sets out the standard specification for Methyl Ethyl Ketone (MEK) and applies to all consignments of this grade. It is not a lot-specific release document; a lot-specific certificate carrying the analysis of the material actually shipped is issued with each consignment. Scapex Exports supplies against customer-specified assay limits and pharmacopoeial standards — send your specification sheet and we will confirm compliance before order.
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