| Product name | 3-Amino-5-mercapto-1,2,4-triazole | 
| Also known as | 3-Amino-1,2,4-triazole-5-thiol; 5-amino-4h-1,2,4-triazole-3-thiol; ATSA; 5-amino-1,2-dihydro-3H-1,2,4-triazole-3-thione; 5-Amino-3-mercapto-1,2,4-triazole | 
| English name | 3-Amino-5-mercapto-1,2,4-triazole | 
| Molecular formula | C3H5N3S | 
| CAS NO. | 16691-43-3 | 
| Molecular weight | 98.1065 | 
| Molecular structure |  | 
| Product nature | Soluble in ethanol and methanol, slightly soluble in water, soluble in acid, but insoluble in alkali | 
| Specification | ≥98% | 
| Appearance | Colorless needle crystal | 
| Storage | Store in a cool, ventilated place, isolated from fire | 
| Package | Cardboard drum lined with plastic bag, 25 Kg/barrel; or according to customer requirements | 
| Use | It is mainly used in the synthesis of sulfamethizole and phthalylsulfamethizol, and is an important pharmaceutical and dye intermediate. |