Description

Phenyl 4-(2H-Naphtho[1,2-D]Triazol-2-Yl)Stilbene-2-Sulphonate is a specialized organic compound belonging to the class of stilbene-based fluorescent brightening agents (FBAs) or optical brighteners. Its core value lies in its ability to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the whiteness and brightness of materials. This high-performance additive is essential for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve the visual appeal and perceived quality of their products.

Application

This high-efficiency optical brightener is utilized across various industrial sectors to impart a brilliant white appearance. Key application areas include:

• Plastics and Polymers: Masterbatch formulation for polypropylene (PP), polyethylene (PE), polystyrene (PS), ABS, and PVC to counteract yellowing and improve brightness.
• Synthetic Fibers: Brightening agent for polyester, nylon, and acrylic fibers during melt spinning or in subsequent finishing baths.
• Coatings and Paints: Additive in lacquers, varnishes, and industrial coatings to achieve high whiteness and masking power.
• Detergent and Soap Industries: A key component in laundry detergents and fabric softeners to make white fabrics appear brighter and colors more vivid.
• Paper Manufacturing: Used in coating formulations for high-quality paper grades to achieve superior optical brightness.
• Printing Inks: Incorporated into specialty inks to enhance the visual impact of printed materials on various substrates.

Basic Information

Product Name	Phenyl 4-(2H-Naphtho[1,2-D]Triazol-2-Yl)Stilbene-2-Sulphonate
CAS No.	6994-51-0
Molecular Formula	C29H19N3O3S
Molecular Weight	489.55 g/mol
Synonyms	Phenyl 4-(2H-Naphtho[1,2-d]triazol-2-yl)stilbene-2-sulfonate; 2H-Naphtho[1,2-d]triazol-2-yl, 4-(2-phenylethenyl)-, phenyl sulfonate; Optical Brightener 220; FBA 220; Stilbene brightener 220; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid derivative (related class); 2-(4-Styrylphenyl)benzoxazole sulfonate derivative; CI Fluorescent Brightener 220 (related index).
EINECS	Contact for details

Quality Control

Our production of Phenyl 4-(2H-Naphtho[1,2-D]Triazol-2-Yl)Stilbene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for strength and hue, and checks for residual solvents and heavy metals. Certificates of Analysis (COA) documenting all critical parameters are available upon request to ensure full traceability and compliance with your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product efficacy.

Specification

Item	Specification
Appearance	Light yellow to yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition (Sulfated Ash)	≤ 0.2%
Absorbance (in solution)	Meets standard range
Fluorescence Brightness	Standard sample comparison ≥ 100%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.