Description

Bis[[(2,4-Dichlorophenoxy)Methyl]Dimethyloctylammonium] 4,4'-Diaminostilbene-2,2'-Disulphonate is a specialized quaternary ammonium salt derivative of a fluorescent whitening agent, offering unique functional properties. This compound matters for industrial formulators seeking to impart cationic functionality, optical brightening effects, or antimicrobial activity within a single molecule. It is primarily needed by manufacturers in the textile, paper, detergent, and specialty polymer industries for applications requiring surface modification, whitening, or biocidal action.

Application

• Optical Brightening Agent (OBA): Used as a cationic fluorescent whitener for synthetic fibers (polyamide, acrylic) and paper to enhance brightness and whiteness.
• Textile Auxiliary: Functions as a softener, antistatic agent, and dyeing auxiliary with built-in whitening properties for specialty fabric finishes.
• Detergent & Laundry Care: Incorporated into premium liquid and powder detergents as a fabric brightener that exhibits substantivity to fibers.
• Antimicrobial & Disinfectant Formulations: The quaternary ammonium (quat) structure provides potential biocidal activity for use in specialty disinfectants and preservatives.
• Paper Coating & Sizing: Enhances the optical properties of high-quality papers and board while improving ink receptivity and printability.
• Polymer Modification: Acts as a functional additive or monomer for creating polymers with built-in fluorescence or antimicrobial characteristics.
• Research & Development: Serves as a key intermediate or reference standard in the synthesis of novel dyes, surfactants, and functional materials.

Basic Information

Item	Details
Product Name	Bis[[(2,4-Dichlorophenoxy)Methyl]Dimethyloctylammonium] 4,4'-Diaminostilbene-2,2'-Disulphonate
CAS No.	93840-59-6
Molecular Formula	C52H62Cl4N4O8S2
Molecular Weight	1084.93 g/mol
Synonyms	Bis[(2,4-dichlorophenoxy)methyl]dimethyloctylammonium 4,4'-diaminostilbene-2,2'-disulfonate; Cationic stilbene brightener; Quaternary ammonium salt of DAS; Fluorescent brightener 357; Tinopal® type cationic brightener; 4,4'-Diaminostilbene-2,2'-disulfonic acid bis[(2,4-dichlorophenoxy)methyl]dimethyloctylammonium salt; DAS quat
EINECS	Contact for details

Quality Control

Our production of Bis[[(2,4-Dichlorophenoxy)Methyl]Dimethyloctylammonium] 4,4'-Diaminostilbene-2,2'-Disulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analysis including HPLC for purity and identity confirmation, spectrophotometry for color and brightness assessment, and titration for active content. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance and flow characteristics. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 3.0%
Ash Content	≤ 0.5%
Fluorescence Brightness	Standard sample match
Solubility (1% in water)	Clear, yellow solution

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