1, General name:2B acid 2, Chemical name:2-Chloro-4-Aminotoluene-5-Sulphonic Acid CAS:88-51-9 2B acid ... name:2B acid 2, Chemical name:2-Chloro-4-Aminotoluene-5-Sulphonic Acid3, Structural formula: 4, Molecular formula:C7H6ClNO3S, Molecular weight:221.55 ... . It will release gas when it is fired. 2-Amino-4-chloro-5-methylbenzenesulfonic acid,CAS:88-51-9