1. Basic Identification Information

Parameter	English Specification/Value
IUPAC Name	1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea
Common Name(s)	Triclocarban; TCC; 3,4,4'-Trichlorocarbanilide; Triclocarbanilide
CAS Registry Number	101-20-2
EC/EINECS Number	202-924-2
Molecular Formula	C₁₃H₉Cl₃N₂O
Molecular Weight	315.58 g/mol
Chemical Class	Halogenated urea derivative; broad-spectrum antibacterial agent; deodorant; preservative

2. Physicochemical Properties

Property Category	Specific Parameter	Specification/Value
Structural Features	Functional Groups	Urea linkage (-NH-CO-NH-); three chlorine substituents (-Cl) on two phenyl rings
Physical Appearance	State & Color	White to off-white crystalline powder; odorless or faint aromatic odor
	Melting Point	250–255 °C (lit.)
	Boiling Point	Decomposes before boiling (decomposes above 260 °C)
	Density (25 °C)	1.48 g/cm³ (crystalline form)
Solubility	Polar Solvents	Slightly soluble in ethanol (1 g/100 mL), propylene glycol; insoluble in water (<0.0001 g/100 mL at 25 °C)