119-72-2

Basic information

• Product Name: 4-Nitro-4'-aminostilbene-2,2'-disulfonic acid
• Synonyms: 4-amino-4’-nitro-2,2’-stilbenedisulfonicacid;4-amino-4’-nitro-2’-stilbenedisulfonicacid;5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]-benzenesulfonicaci;kyselina4-amino-4’-nitrostilben-2,2’-disulfonova;kyselina4-nitro-4’-aminostilben-2,2’-disulfonova;4-AMINO-4'-NITROSTILBENE-2,2'-DISULFONIC ACID;4-NITRO-4'-AMINOSTILBENE-2,2'-DISULFONIC ACID;5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]-benzenesulfonic acid
• CAS NO: 119-72-2
• Molecular Formula: C₁₄H₁₂N₂O₈S₂
• Molecular Weight: 400.38
• EINECS: 204-346-5
• Mol File: 119-72-2.mol
• Article Data: 2

Chemical Properties

• Melting Point: >300°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: white powder
• Density: 1.5746 (rough estimate)
• Refractive Index: 1.6900 (estimate)
• PKA: -1.31±0.45(Predicted)
• Water Solubility: Soluble in water.
• CAS DataBase Reference: 4-Nitro-4'-aminostilbene-2,2'-disulfonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Nitro-4'-aminostilbene-2,2'-disulfonic acid(119-72-2)
• EPA Substance Registry System: 4-Nitro-4'-aminostilbene-2,2'-disulfonic acid(119-72-2)

Safety Data

• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36/37/39
• RTECS: WJ6100000
• TSCA: Yes
• Hazardous Substances Data: 119-72-2(Hazardous Substances Data)

Usage

Uses

4-Nitro-4''-aminostilbene-2,2''-disulfonic Acid is used as a reactant in the synthesis of triazine-containing asymmetrical fluorescent brighteners.

Upstream product

• 1211962-72-9 4,4'-dinitrostilbene 2,2'-disulfonic acid 

Downstream Products

• 81-11-8 4,4'-diaminostilbene-2,2'-disulfonic acid 
• 67969-96-4 C₁₄H₁₀N₃O₈S₂⁽¹⁺⁾*Cl^(1-) 
• 63216-86-4 C₂₄H₁₈N₄O₉S₃ 
• 5136-34-5 6,6'-(ethane-1,2-diyl)bis(3-aminobenzenesuIfonic acid) 

Relevant articles and documents

Nitrogen doped carbon supported iron catalysts for highly selective production of 4,4′-diamino-2,2′-stilbenedisulfonic acid

Nitrogen doped carbon supported iron catalysts were prepared from pyrolysis of a multidentate nitrogen ligand iron complex supported on chitosan at different temperature, and showed good performances in the reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid (DNS acid) to 4,4′-diamino-2,2′-stilbenedisulfonic acid (DSD acid) with hydrazine hydrate (N2H4·H2O) as reductant. Characterization results revealed that the iron is mainly present in the form of Fe2O3 and metallic iron nanoparticles. The doped N atoms functionalized as anchoring sites to stabilize iron nanoparticles, which endows the catalysts with excellent activity and superior reusability.