2,3-dichlorobuta-1,3-diene CAS 1653-19-6
| CAS No. | 1653-19-6 |
| Molecular Formula | C4H4Cl2 |
| Molecular Weight | 122.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,3-dichlorobuta-1,3-diene (CAS 1653-19-6), molecular formula C4H4Cl2 and molecular weight 122.98 g/mol, is a CATO reference standard with documented purity and traceability.
2,3-dichlorobuta-1,3-diene (C4H4Cl2) contains chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2,3-dichlorobuta-1,3-diene 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 | C4H4Cl2 |
| Molecular Weight | 122.98 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
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