Scapex Exports Pvt. Ltd.
830, 8th Floor, Sun Gravitas, Times of India Road,
Shyamal, Ahmedabad 380015, Gujarat, India
+91 9925522674 · info@scapexexports.com
CIN U46909GJ2025PTC164345
Shyamal, Ahmedabad 380015, Gujarat, India
+91 9925522674 · info@scapexexports.com
CIN U46909GJ2025PTC164345
Certificate of AnalysisStandard product specification
Dipropylene Glycol Methyl Ether (DPM)
CAS 34590-94-8 · C7H16O3 · ≥99.0% Technical
Structural formula1. Product identity
| Product name | Dipropylene Glycol Methyl Ether (DPM) |
|---|---|
| C.A.S. number | 34590-94-8 |
| Molecular formula | C7H16O3 |
| Molecular weight | 148.20 g/mol |
| Grade / standard | ≥99.0% Technical |
| Description | Clear colorless liquid |
| Product group | Glycol Ethers |
| Category | Solvents & Glycols |
| Country of origin | India |
| Packing | Bags, drums, carboys, IBC or ISO tank as applicable — customer-specified packing available |
| Storage | Cool, dry, well-ventilated place in tightly closed original packing |
2. Analytical specification
| 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 99.0 % w/w | 99.41 | Gas Chromatography |
| 4 | Purity (by GC) | Not less than 99.5 % (area) | 99.80 | Gas Chromatography |
| 5 | Colour (APHA / Pt-Co) | Not more than 10 | 4 | ASTM D1209 |
| 6 | Water Content | Not more than 0.05 % w/w | 0.0137 | Karl Fischer titration |
| 7 | Acidity (as acetic acid) | Not more than 0.002 % w/w | 0.0009 | 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 | 1.0225 | Pycnometry / ASTM D4052 |
| 10 | Refractive Index at 20 °C | 1.4380 – 1.4420 | 1.4393 | Refractometry / ASTM D1218 |
3. Declaration
This document sets out the standard specification for Dipropylene Glycol Methyl Ether (DPM) and applies to all consignments of this product and grade supplied by Scapex Exports Pvt. Ltd. It is not a lot-specific release document; a lot-specific certificate carrying the analysis of the material actually shipped is issued with, and travels with, each consignment. Scapex Exports supplies against customer-specified assay limits and pharmacopoeial standards — send your specification sheet and we confirm compliance in writing before the order is accepted.
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