The Brave and the Bold #159

Batman and Ra's Al Ghul have to work together in order to find Professor Hatter, whose crystal formula can crystalize all other matter. When the League of Assassins kill the Professor's brother, Hatter is overcome by sorrow and vows to destroy the world with his formula. The trail leads to a junk outside the coast of Hong Kong, where Batman and Ra's Al Ghul are able to neutralize the effect of the formula by spraying themselves and the sea with silicone.