Molecule structure of N-4-Biphenylyl-N-hydroxybenzenesulfonamide (CAS NO.29968-68-1):

IUPAC Name: N-Hydroxy-N-(4-phenylphenyl)benzenesulfonamide 
Molecular Weight: 325.3816 g/mol
Molecular Formula: C₁₈H₁₅NO₃S 
Density: 1.336 g/cm³ 
Boiling Point: 541.4 °C at 760 mmHg 
Flash Point: 281.2 °C
Index of Refraction: 1.665
Molar Refractivity: 90.4 cm³
Molar Volume: 243.3 cm³
Polarizability: 35.83×10^-24 cm³
Surface Tension: 58.3 dyne/cm 
Enthalpy of Vaporization: 86.23 kJ/mol
Vapour Pressure: 1.48E-12 mmHg at 25 °C
XLogP3-AA: 3.8
H-Bond Donor: 1
H-Bond Acceptor: 4
Rotatable Bond Count: 4
Exact Mass: 325.077264
MonoIsotopic Mass: 325.077264
Topological Polar Surface Area: 57.6
Heavy Atom Count: 23
Complexity: 453
Canonical SMILES: C1=CC=C(C=C1)C2=CC=C(C=C2)N(O)S(=O)(=O)C3=CC=CC=C3
InChI: InChI=1S/C18H15NO3S/c20-19(23(21,22)18-9-5-2-6-10-18)17-13-11-16(12-14-17)15-7-3-1-4-8-15/h1-14,20H
InChIKey: AVKIDMWZECPVTA-UHFFFAOYSA-N

Questionable carcinogen with experimental neoplastigenic data. See also SULFONATES. When heated to decomposition it emits very toxic fumes of SO_x and NO_x.

 N-4-Biphenylyl-N-hydroxybenzenesulfonamide (CAS NO.29968-68-1) is also named as BRN 2881808 ; Hydroxy-4-biphenylylbenzenesulfonamide ; Benzenesulfonamide, N-4-biphenylyl-N-hydroxy- . N-4-Biphenylyl-N-hydroxybenzenesulfonamide (CAS NO.29968-68-1) is toxic. It is flammable. It will produce toxic nitrogen oxide and sulfur oxide fumes when buring. So the storage environment should be ventilate, low-temperature and dry.