... acid 1, General name:2B acid 2, Chemical name:2-Chloro-4-Aminotoluene-5-Sulphonic Acid3, Structural formula: 4, Molecular formula:C7H6ClNO3S, Molecular weight ... powder Purity, (wt)%:≥98.0Moisture, (wt)%:≤1.0 Insoluble matter in alkali, (wt)%≤0.5Ash, %≤0.5 7, Uses:an important organic Pigment ... equipment. It will release gas when it is fired. 2-Amino-4-chloro-5-methylbenzenesulfonic acid,CAS:88-51-9