2-Amino-4,8-naphthalenedisulfonic acid
News 2025-04-03
Chemical Name: 2-Amino-4,8-naphthalenedisulfonic Acid
Synonyms: 4,8-Disulfo-2-naphthylamine
CAS No.: 131-27-1
Molecular Formula: C₁₀H₉NO₆S₂
Molecular Weight: 303.31 g/mol
Appearance: Grey to light red crystalline powder
Quality Specifications
| Parameter | Specification |
|---|---|
| Purity | ≥70% (as free acid) |
| Insoluble Matter | ≤0.4% |
| Moisture | ≤5.0% (typical) |
Applications
- Dye Intermediate:
- Key precursor for:
- Reactive Yellow/Brown dyes
- Direct Fast Blue B2BL
- Key precursor for:
- Specialty Chemicals:
- Sulfonation agent in organic synthesis
Packaging & Shipping
- Standard: 25 kg/drum (HDPE with inner liner)
- Custom: Buyer-specified packaging available
Storage & Handling
- Storage Conditions:
- Store in dry, ventilated warehouse (<30°C)
- Relative humidity: <65%
- Protection:
- Light-sensitive – use opaque containers
- Moisture-sensitive – keep containers sealed
