Weight loss experiments were performed on IM125 (low-oxygen, commercially pure titanium) coupons exposed to methanol with varying additions of iodine and water. The corrosion rate was observed to increase as the weight per cent additions of iodine were increased to 5%. Increasing additions of water to MeOH/0.5% I 2 were observed to reduce the corrosion rate. Water additions of 15 vol% were observed to cause passivation of the titanium in this solution. Constant crosshead speed SCC tests were also performed in MeOH/I 2 /H 2 O mixtures. The predominant mode of fracture was transgranular cleavage with small amounts of intergranular fracture being evident in the lower crosshead speed tests. Additions to the solutions of selenium ions were observed to increase crack propagation rates, while additions of platinum ions were observed to reduce crack velocities and, in some cases, completely arrest SCC. The fracture surfaces from specimens tested in platinum-containing solutions showed significantly less transgranular cleavage and intergranular fracture than specimens tested in the platinum-free solutions. These observations support the view that the transgranular cleavage and intergranular fracture occurring during the SCC of titanium in MeOH/I 2 /H 2 O mixtures is caused by hydrogen embrittlement.