c.i. azoic diazo component 51 ; diazo fast dark blue r ; azoic diazo component 51, azoic diazo no. 51 ; fast navy blue ra salt ; azoic dc 51 ; azoic diazo component 51 ; fast dark blue r salt ; azoic diazo no 51 ; ci 37195 ; fastdarkbluersaltc.i.37195