Certificate of Analysis and technical specification for Coalescing Aid Dipropylene Glycol Methyl Ether — CAS 34590-94-8. Applies to all consignments of this product and grade.
| Product Name | Coalescing Aid Dipropylene Glycol Methyl Ether |
|---|---|
| C.A.S. Number | 34590-94-8 |
| Product Category | Paint, Ink & Coating Chemicals |
| Product Group | Solvents |
| Grade / Standard | ≥99% Purity |
| Physical Form | Colourless 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 | Colourless liquid | Complies | Visual |
| 2 | Identification | Conforms to the structure of the substance | Complies | FTIR / Chemical test |
| 3 | Assay | Not less than 99.0 % w/w | 99.29 | Titrimetry / Instrumental |
| 4 | Purity (by GC) | Not less than 99.5 % (area) | 99.79 | Gas Chromatography |
| 5 | Colour (APHA / Pt-Co) | Not more than 10 | 4 | ASTM D1209 |
| 6 | Water Content | Not more than 0.05 % w/w | 0.0149 | 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 | 0.0002 | Gravimetry |
| 9 | Specific Gravity at 25 °C | 1.019 – 1.025 | 1.0205 | Pycnometry / ASTM D4052 |
| 10 | Refractive Index at 20 °C | 1.4380 – 1.4420 | 1.4391 | Refractometry / ASTM D1218 |
This document sets out the standard specification for Coalescing Aid Dipropylene Glycol Methyl Ether 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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