Description

4-Azobenzenetrimethylammonium is a functionalized azo compound featuring a permanently charged quaternary ammonium group. This unique structure makes it a valuable cationic photoinitiator and a versatile building block for advanced materials. It is primarily utilized in research and industrial applications requiring light-induced polymerization or surface modification. Key sectors that require this compound include photochemistry, polymer science, and the development of functional coatings and smart materials.

Application

• Photoinitiator for Cationic Polymerization: Used to initiate the light-cured polymerization of epoxy and vinyl ether resins in coatings, inks, and adhesives.
• Surface Modification Agent: Employed to create cationic surfaces on materials like polymers, glass, or textiles for improved adhesion, dyeability, or antimicrobial properties.
• Research Chemical for Photochemistry: Serves as a model compound in academic and industrial research studying photo-induced electron transfer, azo chemistry, and chromophore behavior.
• Precursor for Functional Dyes and Pigments: Acts as an intermediate in the synthesis of specialized cationic azo dyes for textiles, paper, or biological staining.
• Component in Smart Material Systems: Incorporated into hydrogels, liquid crystals, or other responsive materials where light-triggered changes in charge or conformation are desired.
• Cross-linking Agent: Can be used in UV-curable formulations to introduce ionic cross-links, enhancing the mechanical and thermal stability of polymer networks.

Basic Information

Product Name	4-Azobenzenetrimethylammonium
CAS No.	21704-61-0
Molecular Formula	C15H18N4+ • X- (Commonly as chloride or tetrafluoroborate salt)
Molecular Weight	Variable (depends on counterion). Contact for details.
Synonyms	4-(Trimethylammonio)azobenzene; p-(Trimethylammonio)azobenzene; Azobenzene-4-trimethylammonium; N,N,N-Trimethyl-4-(phenyldiazenyl)anilinium; Cationic Azobenzene; AzoBTMA; 4-Azobenzenetrimethylammonium salt; (4-Phenylazophenyl)trimethylammonium
EINECS	Contact for details.

Quality Control

Our 4-Azobenzenetrimethylammonium is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and performance consistency. We provide a detailed Certificate of Analysis (COA) with key parameters such as assay (HPLC), counterion content, and absorbance characteristics. Our quality commitment supports applications in research and development where reproducible results are critical.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical, grade dependent)
Counterion Content	As specified (e.g., Chloride, Tetrafluoroborate)
UV-Vis Absorption (λmax)	Characteristic peak in specified range
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%

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