2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-(2,4-xylylazo)- 3761-53-3 (DISODIUM SALT) 4-((2,4-Dimethylphenyl)diazenyl)-3-hydroxy-2,7-naphthalenedisulfonic acid AIDS-155875 AIDS155875 Acetacid Red J Acid Leather Red KPR Acid Leather Red P2R Acid Leather Scarlet IRW(*disodium salt*) Acid Ponceau 2RL Acid Ponceau 2RL(*disodium salt*) Acid Ponceau R Acid Red 26 Acid Scarlet Acid Scarlet 2R for Lakes Acid Scarlet 2R for Lakes Bluish Acid Scarlet 2RL Acid leather scarlet irw Acid ponceau special Acid scarlet 2B Acid scarlet 2Rn Acid scarlet 2bn Acid scarlet 2r Acidal Ponceau G Acilan ponceau rrl Ahcocid Fast Scarlet R Aizen Ponceau RH Amacid Lake Scarlet 2R Amacid scarlet 2r Brilliant ponceau G C.I. Acid