Yellow crystals, explosive, highly toxic; insoluble in water, soluble in organic solvents (strict control required); mainly used in the synthesis of special dyes, military material intermediates (controlled chemicals, operation must strictly comply with safety specifications) Hazard Class: Class 1.1 dangerous goods; explosive, highly toxic
Chinese alias：6-硝基-1,2-重氮氧基萘-4-磺酸（六硝）
English alias：6-nitro-1,2-diazooxynaphthalene-4-sulfonic acid
Special dye/military material intermediate; used in the synthesis of high-performance dyes (such as high temperature resistant dyes), military special materials, strict control required; also can be used as explosive additive to improve product energy density (controlled chemicals)
| No. | Test Item | First Grade | Qualified Grade |
| 1 | Appearance | Light yellow to brown crystals; color deepening allowed during storage | |
| 2 | Purity (%) | ≥ 92.50 | ≥ 90.00 |
| 3 | Main content (%) | ≥ 78.00 | ≥ 75.00 |
| 4 | 8-Nitro (%) | ≤ 2.50 | ≤ 4.00 |
| 5 | Non-nitro impurities (%) | ≤ 0.20 | ≤ 0.50 |
| 6 | Free acid (%) | ≤ 2.50 | ≤ 5.00 |
| 7 | Water-insoluble matter (%) | ≤ 0.10 | ≤ 0.10 |
Address: Block B, Interstellar Center, Yuhua District, Shijiazhuang City, Hebei Province
