4-Nitro 4'-Amino Diphenylamine-2-Sulphonic Acid
This compound is a pale to reddish-brown crystalline intermediate used primarily in the dyes and pigments industry, especially for manufacturing azo and acid dyes, as well as textile, leather, and paper coloration. It’s commonly converted into other dye intermediates like F‑C acid via catalytic reduction. In practice, it’s dissolved in alkaline solutions for use in dyeing processes
Synonyms
4‑NADPSA ; 4‑Amino‑4′‑nitro‑diphenylamine‑2‑sulfonic acid ; 4‑Nitro‑4′‑Amino‑Diphenylamine‑2‑Sulphonic Acid
Formula
C₁₂H₁₁N₃O₅S
CAS No
91‑29‑2
HS Code:
29215990
Industries Served
- Dyes & Pigments Industry
- Textile Industry
- Leather Industry
- Ink Industry
- Chemical Intermediate Production
Applications
- Vital intermediate in manufacturing various azo dyes and acid dyes.
- Commonly employed to produce dyes for textile, paper, and leather industries.
- Used extensively in producing dyes that impart vibrant and stable shades to cotton, wool, silk, and synthetic fibers.
- Important for producing dyes offering excellent penetration, brightness, and uniform coloration for leather goods.
- Utilized as an intermediate for specialty printing inks, particularly those requiring high-quality colorants.
- Acts as a crucial building block in the synthesis of various complex chemical compounds, including dye intermediates and colorants.
