2,3,5,6-Tetrachloro-p-xylene CAS 877-10-1
| CAS No. | 877-10-1 |
| Molecular Formula | C8H6Cl4 |
| Molecular Weight | 243.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to chlorine substitution, an aromatic ring system, 2,3,5,6-Tetrachloro-p-xylene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 243.95 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).
2,3,5,6-Tetrachloro-p-xylene (CAS 877-10-1) is a high-purity analytical reference standard with the molecular formula C8H6Cl4 and a molecular weight of 243.95 g/mol.
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 | C8H6Cl4 |
| Molecular Weight | 243.95 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
Related Tetrachloro Standards
- 3,4,5,6-Tetrachloro-o-xylene (CAS 877-08-7)
- 2,4,5,6-Tetrachloro-M-Xylene (CAS 877-09-8)
- Tetrachloro-o-benzoquinone (CAS 2435-53-2)
- 1,2,3,5-Tetrachloro-4-methoxybenzene (CAS 938-22-7)
- 4,4,5,5-Tetrachloro-2,2-difluoro-1,3-dioxolane (CAS 87075-01-2)
- 2,3,5,6-Tetrachloro-1H-pyridine-4-thione (CAS 10351-06-1)
- 2,3,5,6-Tetrachloro-4-fluoropyridine (CAS 34415-32-2)
- 1,2,3,5-Tetrachloro-4-fluorobenzene (CAS 319-95-9)
Recommended Standards
- 1-Chloro-4-(2,2,2-trichloroethyl)benzene (CAS 3883-14-5)
- 1,4-Bis(dichloromethyl)benzene (CAS 7398-82-5)
- a,a,a',a'-Tetrachloro-o-xylene (CAS 25641-99-0)
- (S)-2,4-Dichloro-1-(1,2-dichloroethyl)benzene (CAS 1428650-20-7)
- 5-Chloro-4,7-dimethyl-1H-indole (CAS 1227268-59-8)
- 2-(Phenylamino)pyrimidine-5-carboxylic acid (CAS 450368-25-9)
- 1,3-Dimethyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-5-amine dihydrochloride (CAS 2138284-53-2)
- 6-(2,5-Dimethylphenoxy)nicotinic acid (CAS 954264-14-3)
- 2-Amino-1-(4-(2-ethoxyphenyl)piperazin-1-yl)ethan-1-one (CAS 1291553-80-4)
- 5-Isoxazolecarboxaldehyde,3-chloro- (CAS 220780-53-0)
- 5,5-Dimethyl-1-(3-methylbut-2-en-1-yl)pyrazolidin-3-one (CAS 131391-06-5)
- (1-Phenyl-4-piperidyl)methanamine (CAS 170353-35-2)
- 1,3-Naphthalenedicarbonitrile, 97% (CAS 18713-36-5)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
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