The solubility (M-sat) of sodium chloride in water was measured in the pressure range 0.10-300 MPa, and temperatures from 263 to 313 K. In the region of high temperature and low pressure, the solubility values of NaCl anhydride obtained were fitted to the equation In[msat(p, T)/mol kg(-1)] = 2.86623 - 571.361/(T/K) + 77,128/(T/K)(2) + 4.0479 x 10(-4)(p/MPa) - 7.445 x 10(-7)(p/MPa)(2) + 6.209 x 10(-10)(p/MPa)(3) with a standard deviation of 0.08%. In the low-temperature and high-pressure region, the values for NaCl center dot 2H(2)O were fitted to ln[Msat(P, 7)/mol kg(-1)] = 5.35183 - 1366.040/(T/K) + 108,664/(T/K)(2) + [0.010331 - 5.8869(T/K)(-1) + 831.7(T/K)(-2)](p/MPa) with a standard deviation of 0.14%. The experimental values of the high-pressure solubilities were compared with thermodynamic estimates using density data of the solid and aqueous solution of sodium chloride and the activity coefficient of the aqueous solution. (c) 2007 Elsevier B.V. All rights reserved.