2,5-Diiodo-1,3-dimethylbenzene CAS 4102-48-1
| CAS No. | 4102-48-1 |
| Molecular Formula | C8H8I2 |
| Molecular Weight | 357.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-Diiodo-1,3-dimethylbenzene (CAS 4102-48-1), molecular formula C8H8I2 and molecular weight 357.96 g/mol, is a CATO reference standard with documented purity and traceability.
2,5-Diiodo-1,3-dimethylbenzene (C8H8I2) contains iodine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 2,5-Diiodo-1,3-dimethylbenzene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H8I2 |
| Molecular Weight | 357.96 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
Related Diiodo Standards
- 1,4-Diiodo-2,5-dimethylbenzene (CAS 1124-08-9)
- 1,2-Diiodo-4,5-dimethylbenzene (CAS 5182-67-2)
- 1,5-Diiodo-2,4-dimethylbenzene (CAS 4102-50-5)
- 2,4-Diiodo-6-methylaniline (CAS 117832-09-4)
- 2,4-Diiodo-5-methylaniline (CAS 117832-10-7)
- 2,4-Diiodo-3-methylaniline (CAS 860751-94-6)
- 2,6-Diiodo-4-methylaniline (CAS 64662-57-3)
- 3,5-Diiodo-6-methylpyridin-2-amine (CAS 1000342-88-0)
Recommended Standards
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