
Chloramine T, molecular formula: C₇H₇ClNNaO₂S, molecular weight: 227.64. It is commonly found as a trihydrate (Chloramine-T trihydrate) and is also known as chloramine T or sodium p-toluenesulfonamide chloride. It is a stable organochlorine disinfectant that combines mild oxidizing properties with bactericidal activity, and is widely used in healthcare, water treatment, organic synthesis, and other fields.
| Item | Specification |
| Appearance | White or slightly yellow crystalline powder |
| Melting Point | N/A |
| Boiling Point | 314.3°C at 760 mmHg |
| Density | 1.401 [at 20°C] |
| Vapor pressure | 0 Pa at 25°C |
| Acid dissociation constant (pKa) | 0.39 [at 20°C] |
| Flash point | 143.9°C |
| Odor | Slight chlorine odor, no bitter taste. |
| Solubility | Soluble in water (solubility at 20°C approx. 12 g/100 mL) and ethanol; insoluble in chloroform, diethyl ether, and benzene. |
| Stability | Stable in air at room temperature; decomposes slowly (annual loss of available chlorine approximately 0.1%); turns yellow upon loss of chlorine; decomposition accelerates at high temperatures, releasing oxygen. |
| Chemical Properties | Possesses mild oxidizing properties; serves as an excellent electrophilic chlorinating agent and a precursor to azoles; reacts with reducing agents to form p-toluenesulfonamide. |
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