... 2, Chemical name:2-Chloro-4-Aminotoluene-5-Sulphonic Acid CAS:88-51-9 2B acid 1, General name:2B acid 2, Chemical name:2-Chloro ... -4-Aminotoluene-5-Sulphonic Acid3, Structural formula: 4 ... matter in alkali, (wt)%≤0.5Ash, %≤0.5 7, Uses:an important organic Pigment intermediate. 8 ... when it is fired. 2-Amino-4-chloro-5-methylbenzenesulfonic acid,CAS:88-51-9