2-(4-aminophenyl)-5-aminobenzoxazole (APBOA) CAS 13676-47-6

Name: 2-(4-aminophenyl)-5-aminobenzoxazole (APBOA) CAS 13676-47-6
Brand: Aure Chemical
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Synonyms: 5-Amino-2-(4-aminophenyl)benzoxazole; 2-(4-Aminophenyl)benzoxazol-5-amine; 2-(4-Aminophenyl)benzo[d]oxazol-5-amine; 5-Benzoxazolamine, 2-(4-aminophenyl)-; 2-(4-Aminophenyl)-1,3-benzoxazol-5-amine; 5-Amino-2-(p-aminophenyl)benzoxazole

Shandong Aure Chemical Co., Ltd. is one of the leading suppliers of APBOA in China and also one of the manufacturers of this product.

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Product Details

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2-(4-Aminophenyl)-5-aminobenzoxazole (APBOA), CAS 13676-47-6, also known as 5-Amino-2-(4-aminophenyl)benzoxazole or DAPBO, is a heteroaromatic diamine monomer featuring a rigid benzoxazole core and dual amine functionalities. This structure imparts high thermal stability, mechanical strength, and chemical resistance to derived polymers like polyimides, making it suitable for advanced materials synthesis.

Basic Information of APBOA

Product Name	2-(4-aminophenyl)-5-aminobenzoxazole
Abbreviation	APBOA
CAS Number	13676-47-6
Molecular Formula	C13H11N3O
Molecular Weight	225.25 g/mol
Appearance	Off-white to tan solid
Purity	≥99%
Package	1kg/bottle, 20kg/drum, or customized
Molecular formula

Key Properties

High thermal stability and structural rigidity
Good chemical resistance in harsh environments
Stable mechanical properties when incorporated in polymers
Can contribute to flame retardancy in derived polymers (polyimide may not require additional flame retardant)
Dual amine functionality enables polymer chain extension or crosslinking

Key Applications of APBOA

High-Performance Polymers: Serves as a comonomer for synthesizing polyimides, polyimide copolymer fibers, and closed-cell rigid polyimide foams with enhanced thermal stability, rigidity, and flame retardancy, used in aerospace composites, aviation materials, and high-temperature structural components.

Gas Separation Membranes: Incorporated into polyimide membranes for CO₂ capture and gas transport/separation, leveraging its rigid structure for improved selectivity and permeability in industrial applications.

Electronics and Optoelectronics: Utilized in low-dielectric polyimides for telecommunication devices, flexible solar cell substrates (achieving efficiencies up to 16.1%), capacitors, microelectronics, liquid crystal displays, and laser materials.

Energy Storage: Employed in polyimide binders for SiOx-C anodes in lithium-ion batteries, providing dual-function adhesion and conductivity; also used in polyetherimides for capacitive energy storage with high discharge density (3.6 J/cm³) and efficiency (96.5%).

Advanced Materials: Applied in covalent organic frameworks (COFs), specialty coatings, nanotechnology, and potentially in antimicrobial agents or pharmaceuticals due to reported antifungal, antibacterial, and anti-diabetic properties (e.g., activating protein kinase B for glucose metabolism regulation).

Detailed COA / TDS / MSDS are available upon request. Please Contact Us for more information.

Packaging, Transportation & Storage

Aure Chemical ensures that all products are handled in compliance with international safety and quality standards. Each product’s SDS should be consulted for detailed requirements.

Packaging

We use certified UN-rated containers suitable for each chemical type — including steel drums, HDPE drums, IBCs, and ISO tank containers for bulk liquids. All packages are tested for integrity and labeled per IMDG / IATA / ADR standards.

Transportation

Shipments comply with IMDG, IATA, and ADR codes to ensure safe and lawful movement by sea, air, or land. Accompanying documents include SDS, Dangerous Goods Declarations, and COAs.

Storage

Products should be stored in well-ventilated, dry areas, away from heat and incompatible substances. Follow ISO 9001 / 14001 principles for safety, labeling, and periodic inspection.

For detailed handling or customized packaging inquiries, please contact us.

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