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2-(4-Aminophenyl)-1H-benzimidazol-5-amine (APBIA) CAS 7621-86-5

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2-(4-Aminophenyl)-1H-benzimidazol-5-amine (APBIA) CAS 7621-86-5
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2-(4-Aminophenyl)-1H-benzimidazol-5-amine (APBIA) CAS 7621-86-5

Synonyms: 2-(4-Aminophenyl)-5-aminobenzimidazole; 5-Amino-2-(4-aminophenyl)benzimidazole; 1H-Benzimidazol-5-amine, 2-(4-aminophenyl)-; 1H-Benzimidazol-6-amine, 2-(4-aminophenyl)-; 2-(4-Aminophenyl)-1H-benzo[d]imidazol-5-amine; 5(6)-Amino-2-(p-aminophenyl)benzimidazole; 

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

We can provide customized requirements in terms of product purity, packaging specifications, and other aspects.

Please contact us to obtain the latest product information.

Product Details

Discover Aure Chemical's Premium APBIA Supply

2-(4-Aminophenyl)-1H-benzimidazol-5-amine (APBIA), CAS 7621-86-5, is a heteroaromatic diamine monomer based on a benzimidazole core structure. It is characterized by good solubility in organic solvents, structural stability, and dual amino functionality, supporting its use as an intermediate in polymer synthesis and functional material research.


Basic Information of APBIA

Product Name2-(4-Aminophenyl)-1H-benzimidazol-5-amine
AbbreviationAPBIA
CAS Number7621-86-5
Molecular FormulaC13H12N4
Molecular Weight224.26 g/mol
AppearancePale beige to pale brown solid
Purity≥99%
Package1kg/bottle, 20kg/drum, or customized
Molecular StructureAPBIA Molecular Structure

Key Properties

  • High thermal stability associated with benzimidazole heterocycle

  • Dual amino functionality enabling polymerization or crosslinking

  • Good chemical resistance in demanding environments

  • Potential for incorporation into functional polymer membranes

  • Moderate polarity supporting intermolecular and interfacial interactions


Typical Application Contexts of APBIA

  • Polyimide and Heterocyclic Polymer Chemistry: Investigated as a diamine component in polyimide and related heterocyclic polymer systems where rigidity and thermal stability are desired, including specialty functional polymer materials .

  • Functional Membrane Materials Research: Studied in polymer membranes containing benzimidazole units, such as proton-conducting or hybrid membrane systems, at the material research and formulation level.

  • Organic and Medicinal Chemistry Research: Utilized as a heterocyclic building block in laboratory-scale organic synthesis and pharmaceutical research contexts, without implying clinical or commercial drug applications.


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

Packaging, Logistics & Compliance Capabilities

Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.

Packaging Options

  • 25 kg / 50 kg bags (fiber drum, aluminum bag, HDPE drum)
  • 100 kg / 200 kg steel or HDPE drums
  • 500 kg / 1000 kg IBC containers
  • Bulk liquids in ISO tank containers
  • Customized packaging upon request

Transportation Modes

  • Sea freight (FCL / LCL)
  • Air freight for selected products
  • Road and rail transportation
  • Dangerous & non-dangerous cargo handling
  • Incoterms: EXW, FOB, CFR, CIF, DAP, DDP

Storage & Handling

  • Dry, cool, and well-ventilated warehouses
  • Segregation by hazard class
  • FIFO inventory management
  • Temperature-controlled storage if required
  • Regular inspection & labeling control

Documentation & Compliance

  • Safety Data Sheet (SDS)
  • Certificate of Analysis (COA)
  • Dangerous Goods Declaration (DGD)
  • Packing List & Commercial Invoice
  • IMDG / IATA / ADR compliant labeling

For packaging customization or logistics consultation, please contact us.


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