alpha,alpha,alpha',alpha',4-Pentabromo-o-xylene CAS 4235-46-5
| CAS No. | 4235-46-5 |
| Molecular Formula | C8H5Br5 |
| Molecular Weight | 500.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to bromine substitution, an aromatic ring system, alpha,alpha,alpha',alpha',4-Pentabromo-o-xylene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 500.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies alpha,alpha,alpha',alpha',4-Pentabromo-o-xylene (CAS 4235-46-5), a certified reference material (molecular formula C8H5Br5, MW 500.65 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H5Br5 |
| Molecular Weight | 500.65 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 | Br-containing |
Recommended Standards
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