Empirical Formula of Nitrosochloroethyldimethylurea (CAS NO.59960-30-4): C₅H₁₀ClN₃O₂
Molecular Weight: 179.6048 
Index of Refraction: 1.512
Density: 1.27 g/cm³
Flash Point: 88.3 °C
Enthalpy of Vaporization: 45.88 kJ/mol
Boiling Point: 222.4 °C at 760 mmHg
Vapour Pressure: 0.102 mmHg at 25 °C
Structure of Nitrosochloroethyldimethylurea (CAS NO.59960-30-4):
                           
IUPAC Name: 1-(2-Chloroethyl)-3,3-dimethyl-1-nitrosourea
Canonical SMILES: CN(C)C(=O)N(CCCl)N=O
InChI: InChI=1S/C5H10ClN3O2/c1-8(2)5(10)9(7-11)4-3-6/h3-4H2,1-2H3
InChIKey: NEQGOOOOLVHDDF-UHFFFAOYSA-N

Questionable carcinogen with experimental tumorigenic data. Many N-nitroso compounds are carcinogens. When heated to decomposition Nitrosochloroethyldimethylurea (CAS NO.59960-30-4) emits very toxic fumes of Cl⁻ and NO_x. See also N-NITROSO COMPOUNDS.

 Nitrosochloroethyldimethylurea , its cas register number is 59960-30-4. It also can be called 1-Nitroso-1-(2-chloroethyl)-3,3-dimethylurea ; BRN 2255038 ; and Urea, 1-(2-chloroethyl)-3,3-dimethyl-1-nitroso- .