2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 3,3'-dichloro[1,1'-biphenyl]-4,4'-diamine and 5,5'-[oxybis[(5-hydroxy-3,1-phenylene)oxy]]bis[1,3-benzenediol], sodium salts