The high resolution N-2 adsorption isotherms (77.4 K) by graphitized carbon blacks (GCB-I: A(BET) = 54.2 m(2) g(-1) and GCB-II: A(BET) = 69.4 m(2) g(-1)) and nongraphitized carbon black (NGCB: A(BET) = 18.87 m(2) g(-1)) have been measured at p/p degrees = 5 x 10(-8)-0.99. alpha(s)-Curve of the N-2 adsorption isotherm by GCB-I is completely overlapped with that by GCB-II in the pressure range of p/p degrees = 5 x 10(-6)-0.90, but the N-2 Of-curve by GCB-I is remarkably different from that by NGCB. The standard N-2 alpha(s)-data by GCB-I and NGCB have been determined in the range alpha(s) = 0.002-2.2. On the basis of the N-2 adsorption isotherms at the two temperatures (77.4 K, 87.3 K), the isosteric heat of adsorption (differential adsorption enthalpies), the differential adsorption entropies, and the integral adsorption entropies of N-2 molecules have been evaluated between theta (coverage) = 0.05 and theta = 1.50. The surface homogeneity/heterogeneity of carbon black samples has been discussed by the N-2 differential adsorption enthalpies. The adsorbed state of N-2 molecules on the carbon black surfaces has been considered by the differential and integral adsorption entropies. (C) 2010 Elsevier Inc. All rights reserved.