2,3,6-Trichloronaphthalene CAS 55720-40-6
| CAS No. | 55720-40-6 |
| Molecular Formula | C10H5Cl3 |
| Molecular Weight | 231.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,3,6-Trichloronaphthalene is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,3,6-Trichloronaphthalene (CAS 55720-40-6) is a high-purity analytical reference standard with the molecular formula C10H5Cl3 and a molecular weight of 231.51 g/mol.
Owing to chlorine substitution, an aromatic ring system, 2,3,6-Trichloronaphthalene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 231.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C10H5Cl3 |
| Molecular Weight | 231.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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.) | 1972 |
| Halogen Content | Cl-containing |
Related Trichloronaphthalene Standards
Recommended Standards
- 592-09-6 Silane, trichloro(3,3,3-trifluoropropyl)- Trichloro(3,3,3-trifluoropropyl)silane EINECS 209-744-2 (3,3,3-Trifluoropropyl)trichlorosilane (CAS 592-09-6)
- 3-(dimethylamino)-1-(pyridin-3-yl)prop-2-en-1-one 55720-37-1 AR-1E7560 (CAS 55720-37-1)
- (3E)-1,1,1-Trichloro-4-ethoxy-3-methylbut-3-en-2-one (CAS 121781-57-5)
- 3-Bromo-4-chloro-2,3-dihydrothiophene 1,1-dioxide (CAS 114079-02-6)
- 3,4,7,8-Tetrahydropyrimido[5,4-d]pyrimidine (CAS 98135-33-2)
- 2-(2,6-Dichlorophenyl)-2-(dimethylamino)acetic acid (CAS 1218476-20-0)
- 4-((1-Methyl-1H-pyrazole-4-carbonyl)oxy)benzoic acid (CAS 1365937-96-7)
- Ethyl 2-(7,7-difluoro-6-methyl-4-oxobicyclo[4.1.0]heptan-3-yl)-2-oxoacetate (CAS 1557248-42-6)
- (2S,3R,4S,5S,6R)-2-(Decylthio)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (CAS 98854-16-1)
- 10-Hendecenoic acid, sodium salt 10-Undecenoic acid, sodium salt 3398-33-2 NSC-2836 NSC2836 Sodium 10-undecenoate Sodium Undecylenate Sodium undec-10-enoate Solution 35 UNDECEN-10-ACID-1 Undecenoic acid, sodium salt Undecylenic acid, sodium salt (CAS 3398-33-2)
- 2-Methoxy-5-[(propylamino)methyl]phenol (CAS 51728-06-4)
- 3-chloro-3-methyl-oxetane (CAS 1903143-40-7)
- 4-chloro-1-(pentan-3-yl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 21253-91-8)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com