Description

34Diaminostilbene CAS NO 79305-82-1 is a high-purity organic chemical compound belonging to the stilbene derivative family, characterized by its two amine functional groups. This compound is a critical intermediate in the synthesis of advanced materials, particularly optical brighteners and fluorescent whitening agents (FWAs) used extensively in industrial applications. It is essential for manufacturers in the polymer, textile, paper, and specialty chemical industries seeking to enhance product brightness and performance. Our supply ensures consistent quality and reliable availability for global B2B procurement.

Application

• Optical Brightener Intermediate: Primary raw material for synthesizing high-performance stilbene-based fluorescent whitening agents (FWAs).
• Polymer & Plastics Additive: Used to manufacture masterbatches and compounds that impart brightness and whiteness to polymers.
• Textile & Fiber Processing: Key intermediate for brightening agents applied to synthetic fibers, fabrics, and detergents.
• Paper & Pulp Industry: Employed in the production of whitening agents for high-quality paper and cardboard.
• Specialty Dyes & Pigments: Serves as a building block for creating specialized dyes with unique optical properties.
• Research & Development: Used in chemical research for developing new photoluminescent materials and organic electronic components.

Basic Information

Product Name	34Diaminostilbene
CAS No.	79305-82-1
Molecular Formula	C14H14N2
Molecular Weight	210.28 g/mol
Synonyms	3,4'-Diaminostilbene; 3,4'-Diamino-1,2-diphenylethylene; 1,2-Bis(4-aminophenyl)ethene; 4,4'-Diaminostilbene (isomeric); Stilbenediamine; DAS; Brightener Intermediate VBL; FWA Intermediate
EINECS	Contact for details

Quality Control

Our 34Diaminostilbene is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and purity, and IR for structural identification, to meet the stringent requirements of industrial applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment and is available upon request to support your quality assurance protocols.

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, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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