3,4-Dichlorobenzoic anhydride CAS 86866-14-0
| CAS No. | 86866-14-0 |
| Molecular Formula | C14H6Cl4O3 |
| Molecular Weight | 364.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,4-Dichlorobenzoic anhydride 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.
CATO supplies 3,4-Dichlorobenzoic anhydride (CAS 86866-14-0), a certified reference material (molecular formula C14H6Cl4O3, MW 364.01 g/mol) for analytical method development and quality control.
3,4-Dichlorobenzoic anhydride (C14H6Cl4O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; 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.
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.
Physical & Chemical Properties
| Molecular Formula | C14H6Cl4O3 |
| Molecular Weight | 364.01 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Cl-containing |
Related Dichlorobenzoic Standards
- 2,4-Dichlorobenzoic acid 2-[1-(3-aminophenyl)ethylidene]hydrazide (CAS 316144-59-9)
- 2,5-DICHLOROBENZOIC ACID METHYL ESTER 2905-69-3 AS02940 LABOTEST-BB LT00847973 LABOTEST-BB LT03331250 LABOTEST-BB LT03381168 Methyl 2,5-dichlorobenzoate RARECHEM AL BF 0427 (CAS 2905-69-3)
- 3,5-Dichlorobenzoic Acid Methyl Ester (CAS 2905-67-1)
- 2,3-Dichlorobenzoic-d3 Acid (CAS 1126107-18-3)
- 3,5-Dichlorobenzoic-d3 Acid (CAS 1219803-99-2)
- 2,6-Dichlorobenzoic-d3 Acid (CAS 1219805-50-1)
- 2,4-Dichlorobenzoic acid-d3 (CAS 1398065-99-0)
- 3,4-Dichlorobenzoic-d3 Acid (CAS 350818-53-0)
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