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Dimethyl sulphoxide, dehydrated (max. 0.03% H₂O) ≥99.5%, AnalaR NORMAPUR® analytical reagent
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Specifications:
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Liquid |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | (CH₃)₂SO |
The test results provided represent a specification sheet for a chemical substance, detailing its purity, physical properties, and trace impurities. Here's a summarized interpretation of the specifications:
Key Parameters and Their Specifications
| Test | Specification | Result |
|---|---|---|
| Assay | Minimum 99.5% | Pass |
| IR Spectrum | Passes test | Pass |
| Substances Coloured by H2SO4 | Passes test | Pass |
| Acidity | Maximum 0.0002 meq/g | Pass |
| Alkalinity | Maximum 0.0002 meq/g | Pass |
| Colouration | Maximum 10 APHA | Pass |
| Melting Point | Minimum 18 °C | Pass |
| Evaporation Residue | Maximum 10 ppm | Pass |
| Heavy Metals (as Pb) | Maximum 1 ppm | Pass |
| Water Content | Maximum 0.03% | Pass |
| Trace Metals | ||
| Aluminium (Al) | Maximum 0.2 ppm | Pass |
| Barium (Ba) | Maximum 0.02 ppm | Pass |
| Calcium (Ca) | Maximum 0.5 ppm | Pass |
| Cadmium (Cd) | Maximum 0.05 ppm | Pass |
| Cobalt (Co) | Maximum 0.02 ppm | Pass |
| Chromium (Cr) | Maximum 0.02 ppm | Pass |
| Copper (Cu) | Maximum 0.02 ppm | Pass |
| Iron (Fe) | Maximum 0.1 ppm | Pass |
| Potassium (K) | Maximum 0.1 ppm | Pass |
| Magnesium (Mg) | Maximum 0.05 ppm | Pass |
| Manganese (Mn) | Maximum 0.02 ppm | Pass |
| Sodium (Na) | Maximum 5 ppm | Pass |
| Lead (Pb) | Maximum 0.05 ppm | Pass |
| Tin (Sn) | Maximum 0.1 ppm | Pass |
| Strontium (Sr) | Maximum 0.02 ppm | Pass |
| Zinc (Zn) | Maximum 0.1 ppm | Pass |
Observations
- The substance meets the minimum assay requirement of 99.5%, confirming its high purity.
- All impurities and trace metals fall well within acceptable limits, ensuring the substance is free from significant contamination.
- The physical characteristics (melting point, acidity, alkalinity, and colouration) are within the defined specifications.
- The water content is exceptionally low (≤ 0.03%), indicating minimal moisture presence.
Applications
This specification aligns with high-purity requirements for use in:
- Pharmaceuticals
- Biotechnological applications
- Chemical analysis
- Industrial processes requiring ultra-pure substances
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