Ketamine

Thailand's justice minister, Somsak Thepsuthin, has stated that tests that turned purple in the presence of ketamine hydrochloride reacted the same to trisodium phosphate -- a chemical that can be used as a food additive and cleaning agent which is all that had been found so far. Previously Thailand's Office of the Narcotics Control Board had announced seizing $1 billion worth of what they thought to be ketamine.