Sulfanilic Acid
Sulfanilic acid (4-aminobenzenesulfonic acid) is a water-soluble aromatic amino sulfonic acid that serves as both a diazo component and coupling component in the manufacture of water-soluble direct, acid, and reactive azo dyes. Its sulfonic acid group imparts water solubility to the resulting dyes and improves affinity for protein and polyamide fibers. Chemzip offers industrial-grade sulfanilic acid with consistent quality for dye manufacturers.
المواصفات الفنية
| appearance | White to off-white crystalline powder |
| purity (%) | ≥99.0 |
| insoluble matter (%) | ≤0.1 |
| sulfonic acid group (%) | ≥28.5 |
مجالات التطبيق
- Water-soluble direct dye synthesis for cotton
- Acid dye intermediate for wool and nylon
- Reactive dye building block
- Optical brightening agent (OBA) intermediate
- Clinical diagnostics reagent (diazotization-based assays)
مميزات المنتج
- High purity ensures consistent diazotization yield and coupling efficiency
- Low insoluble matter prevents reactor clogging in continuous processes
- Zwitterionic structure provides good crystal stability during storage
- Bulk supply capability with dedicated storage tanks at production site
