2-Chloronaphthalene CAS 91-58-7
| CAS No. | 91-58-7 |
| Molecular Formula | C10H7Cl |
| Molecular Weight | 162.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Chloronaphthalene is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 2-Chloronaphthalene (CAS 91-58-7), a certified reference material (molecular formula C10H7Cl, MW 162.62 g/mol) for analytical method development and quality control.
2-Chloronaphthalene (C10H7Cl) contains chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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-Chloronaphthalene 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 | C10H7Cl |
| Molecular Weight | 162.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chloronaphthalene Standards
- 1-Chloronaphthalene (CAS 90-13-1)
- 2-Chloronaphthalene-d7 (CAS 93951-84-9)
- 8-chloronaphthalene-1-carbaldehyde (CAS 129994-50-9)
- 1-Chloronaphthalene-2-carbaldehyde (CAS 14304-75-7)
- 4-Chloronaphthalene-1,2-dione (CAS 6655-90-9)
- 5-Chloronaphthalene-1,4-dione (CAS 40242-15-7)
- 5-Chloronaphthalene-1,4-diamine (CAS 144754-08-5)
- 2-Chloronaphthalene-1,8-diamine (CAS 68049-11-6)
Recommended Standards
- (R)-1-(5-Chlorothiophen-2-yl)ethan-1-ol (CAS 105026-71-9)
- 6271-78-9 K75J71K86L 6-Chloronicotinamide 3-Pyridinecarboxamide, 6-chloro- AI3-52303 EINECS 228-456-8 Nicotinamide, 6-chloro- NSC 37821 UNII-K75J71K86L (CAS 6271-78-9)
- 5-(2-Chloroethyl)thiazol-2-amine (CAS 105773-91-9)
- 471909-43-0 N-[(E)-(4-Chloropyridin-3-yl)methylidene]hydroxylamine DTXSID80623170 (CAS 471909-43-0)
- 4-(propylsulfanyl)benzoic acid (CAS 22683-48-3)
- 4-(Chloromethyl)-1-trityl-1H-imidazole (CAS 103057-10-9)
- 2-methyl-2-(oxan-2-yl)propanenitrile (CAS 1781041-71-1)
- 3-Oxetaneacetonitrile (CAS 1350636-97-3)
- N,N-diethylpiperidine-4-carboxamide nitrate (CAS 1269054-03-6)
- Benzenepropanoic acid, β-(aminomethyl)-4-fluoro-, (S)- (9CI) (CAS 747371-90-0)
- 1-((3-Methylphenyl)sulfonamido)cyclohexane-1-carboxylic acid (CAS 885269-01-2)
- Diethylene Glycol Monohexyl Ether (CAS 112-59-4)
- Fmoc-Leu-Leu-OH (CAS 88743-98-0)
- Semaglutide (CAS CATO-C4X-2226105)
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