** European Trafigura buys more naphtha from the Singapore cash market on Tuesday, bringing its total purchases this month to an unusually high volume of over 870,000 tonnes
** Its total purchases make up over 90 percent of the total volumes transacted since April 3
** Due to Trafigura's buying spree, which started around April 7, Singapore's April naphtha cash volumes so far have surpassed the total quantities transacted for January to March.
** The reasons behind its purchases are unclear
** Trafigura declined to comment when contacted (Reuters Messaging: email@example.com)